Exercise, Weight and Bone Strength During Hormone Therapy: A Practical Routine

The kettlebell had been sitting by the front door for eleven months. Its owner, a retired schoolteacher on an aromatase inhibitor for breast cancer, told her nurse she kept meaning to pick it up but felt the treatment had “made her body someone else’s.” Stiffer knees in the morning. A waistband that crept. A bone scan report with a number she did not understand.

She is not unusual. Whether the medicine blocks estrogen after breast cancer or suppresses testosterone for prostate cancer, the same quiet shift happens underneath: bone thins, muscle drifts away, and fat settles where it did not before. Exercise during hormone therapy is one of the few levers a patient can pull themselves, and the evidence behind it is stronger than most people expect.

This explainer walks through what those medicines do to the body, what movement can realistically change, and how to build a routine that respects both your treatment and your energy on a hard day.

Why exercise during hormone therapy matters more than usual

Hormone therapy for cancer, sometimes called endocrine therapy, is treatment that lowers or blocks the sex hormones a tumor uses to grow. In breast cancer that usually means estrogen; in prostate cancer it means testosterone. The strategy works because many tumors depend on those hormones the way a plant depends on light.

The catch is that the rest of the body depends on them too. Estrogen and testosterone are maintenance hormones. They signal bone to keep rebuilding, help muscle repair itself after use, and influence where fat is stored. Mayo Clinic lists bone thinning, loss of muscle mass, weight gain and fatigue among the common effects of hormone therapy for prostate cancer, and bone loss and joint pain among the effects of aromatase inhibitors used in breast cancer.

Left alone, those changes compound. Less muscle makes movement harder, so people move less, so muscle declines further. Weaker bone makes a fall more dangerous, and weaker muscle makes a fall more likely. This is why exercise is not a side project during treatment; it is aimed squarely at the side effects that matter most for independence later.

The encouraging part is that muscle and bone still respond to load even when hormone levels are low. The response may be slower and smaller than it would be at full hormone levels, but it is real, which is why oncology teams increasingly treat a structured activity plan as part of care rather than an optional extra.

A useful mental frame: the medicine is protecting you from the cancer, and your routine is protecting you from the medicine. Both jobs deserve attention, and neither replaces the other.

What actually happens to bone and muscle when hormones are blocked

Bone is not a fixed scaffold. It is constantly remodeled by two cell types: osteoclasts, which dissolve old bone, and osteoblasts, which lay down new bone. Estrogen and testosterone act as brakes on the osteoclasts. Remove the brakes and dissolving outpaces building. The result is lower bone mineral density, the amount of mineral packed into a given area of bone, measured by a DEXA scan, which is a low-dose X-ray of the hip and spine.

Muscle follows a similar logic. Testosterone in particular drives protein synthesis, the process by which muscle fibers repair and thicken after effort. With testosterone suppressed, the body still repairs muscle, just less efficiently. Over months, that shows up as reduced strength, slower walking pace and a body composition that shifts toward fat even if the scale barely moves.

Fat distribution changes too. Lower sex hormones tend to favor storage around the abdomen and internal organs, sometimes called visceral fat, which is metabolically more active and linked to insulin resistance. That matters because people on long courses of hormone therapy are also watched for blood sugar and cholesterol changes.

Timelines vary by drug and person. Mayo Clinic notes that breast cancer hormone therapy is often taken for 5 to 10 years, and prostate cancer hormone therapy may be given for months or continued long term depending on the situation. Bone and muscle effects accumulate across that span, which is why a routine started early tends to be more useful than one started after a fracture.

None of this is a reason to fear the medicine. It is a reason to understand what it is quietly doing, so the exercise you choose is aimed at the right targets.

Who is usually cleared to exercise, and who is usually asked to wait

Most people on hormone therapy are cleared for regular activity, often with the phrase “start where you are.” The clearance question is less about the hormone medicine itself and more about everything traveling alongside it.

People who typically get a straightforward go-ahead include those with stable disease, no recent surgery, no known bone metastases in weight-bearing areas, and no uncontrolled heart or blood pressure problems. A gentle walking and resistance program is usually appropriate even for someone who has not exercised in years.

Others are asked to pause or modify first:

• Anyone within the first weeks after surgery, until the surgical team confirms healing, especially before lifting or overhead work.
• People with cancer that has spread to bone, where certain high-impact or twisting movements may raise fracture risk and a physiotherapist should design the plan.
• Those with very low bone density on a recent scan, who may be steered away from heavy spinal flexion or jumping until the team agrees on safe loads.
• People with new or unexplained pain, dizziness, chest symptoms or swelling in one leg, which need assessment before any program begins.
• Those receiving chemotherapy or radiation alongside hormone therapy, whose energy and blood counts may fluctuate week to week.

Being asked to wait is not being told exercise is off the table. It usually means the team wants a scan result, a wound check or a physiotherapy referral first. Cancer rehabilitation physiotherapists and exercise physiologists exist precisely for this situation, and asking for one is reasonable at any point in treatment.

The decision about what is safe for you belongs with your treating team, who know your scan results and your history. Bring this article, ask what applies, and start from their answer.

How much exercise during hormone therapy? The weekly numbers explained

The targets for people on hormone therapy are the same ones public health bodies set for adults generally, because no separate evidence base has shown a different sweet spot. The CDC recommends at least 150 minutes of moderate-intensity aerobic activity each week, or 75 minutes of vigorous activity, plus muscle-strengthening activity on two or more days. The World Health Organization adds that adults over 65 should include balance and strength work on three or more days to reduce falls.

Those numbers are ceilings for many people at the start, not floors. The CDC is explicit that some activity is better than none and that health gains begin well below 150 minutes. On a heavy fatigue week, ten minutes of walking after each meal still counts, and still moves the needle.

Moderate intensity has a simple test: you can talk but not sing. Brisk walking, cycling on flat ground, water aerobics and pushing a mower all qualify. Vigorous means you can say only a few words without pausing for breath.

The two-day strength minimum deserves emphasis. For people on hormone therapy, resistance work is arguably the higher-priority half of the prescription, because aerobic activity alone does little to slow muscle loss or load bone in the way that protects density.

A practical way to reach these figures without overwhelm is to think in weekly totals rather than daily quotas. Three 20-minute walks and two 30-minute strength sessions gets you close to the aerobic target and hits the strength target, in under two and a half hours spread across a week.

If fatigue, joint pain or hot flashes make a given week impossible, the guidance is to scale back rather than stop. Consistency across months protects bone and muscle more than intensity across days.

Hormone therapy and strength training: the part most people skip

Resistance training is exercise that makes muscles work against a load: a weight, a band, or your own body. It is also the type of exercise most often left out, particularly by people who never lifted before diagnosis and assume it belongs to a younger, different body.

For someone on hormone therapy, that is a costly omission. Muscle responds to mechanical tension by thickening its fibers, and bone responds to the pull of working muscle by laying down mineral at the attachment points. Both effects persist with low testosterone or estrogen; the hormones amplify the response, but the load itself is the trigger. Remove the load and nothing happens regardless of hormone level.

A sensible starting structure covers the major movement patterns: a squat or sit-to-stand, a hinge such as a hip bridge, a push such as a wall or counter press, a pull such as a band row, and a carry such as walking with a shopping bag in each hand. Two sets of eight to twelve controlled repetitions per movement, twice a week, is a common entry point in rehabilitation programs.

Progress comes from doing slightly more over time: another repetition, a heavier band, a deeper squat. The effort should feel like the last two repetitions are challenging but the form stays clean. Breath-holding, straining or sharp joint pain are signals to reduce the load, not push through.

People with aromatase inhibitor joint stiffness often find that a five-minute warm-up walk before lifting makes the session more tolerable, and that morning stiffness eases with regular movement rather than rest.

If equipment feels intimidating, a physiotherapist can teach a full-body routine using nothing more than a chair, a wall and a resistance band, then adjust it as strength returns.

Which exercises protect bone strength during hormone therapy

Bone strengthens in response to two things: impact and muscle pull. The NHS describes weight-bearing exercise, activity where your feet and legs support your body weight, alongside resistance exercise, as the combination most useful for keeping bones strong.

Weight-bearing activity includes walking, stair climbing, dancing and, for those cleared for it, jogging or skipping. The jolt of a heel meeting the ground sends a small shockwave through the skeleton that signals bone cells to reinforce. Swimming and cycling are excellent for the heart but are not weight-bearing, so they do less for bone density on their own.

Resistance exercise adds the second signal: muscle pulling on bone. Squats load the hip and spine; rows and presses load the arms and shoulders; heel raises load the ankle and lower leg. The spine and hip are the sites that matter most for fracture risk, so exercises that ask those areas to bear load, safely, earn their place.

Balance training is the third pillar and the one most often forgotten. A fracture usually needs a fall to happen. Standing on one leg while brushing teeth, heel-to-toe walking along a hallway, or tai chi classes all train the reflexes that stop a stumble becoming a fall. The WHO includes balance work in its recommendations for older adults specifically for this reason.

Two cautions apply when bone density is already low. Deep forward bending under load, such as toe-touch stretches with weight, and sudden twisting movements place uneven stress on the spine and are often modified or avoided. A physiotherapist can show alternatives that load the spine safely.

Exercise does not reverse bone loss on its own, and it is not a replacement for bone-protecting medicines your team may discuss. What it reliably does is slow the decline and reduce the falls that turn thin bone into a broken one.

Weight gain on hormone therapy: what the evidence actually shows

Weight gain is one of the most common frustrations reported by people on hormone therapy, and it is real rather than imagined. Mayo Clinic lists weight gain and loss of muscle mass among expected effects of hormone therapy for prostate cancer, and changes in body composition are also described with breast cancer endocrine therapy.

The mechanism is partly hormonal and partly behavioral. Lower estrogen or testosterone shifts the body toward storing fat, particularly around the abdomen, while the accompanying fatigue reduces daily movement. Appetite changes, disrupted sleep from hot flashes and reduced muscle mass, which lowers resting energy use, all push in the same direction.

What exercise can and cannot do here needs plain statement. Physical activity alone produces modest weight change in most studies of the general population; its larger benefit during hormone therapy is preserving muscle so that the weight that does shift is fat rather than lean tissue. Combined with attention to portion size and protein intake, activity helps stabilize weight, and strength training in particular helps keep the waistline change smaller than it otherwise would be.

A more useful measure than the scale is function. Can you rise from a chair without using your hands? Climb a flight of stairs without stopping? Carry groceries from the car? These track muscle and balance, which predict independence better than a number in kilograms.

Weight also carries stigma, and people on treatment sometimes hear unhelpful comments from those around them. Body changes during hormone therapy are a medicine effect, not a character failing, and the goal is health and function, not a return to a previous shape. If weight changes are rapid or accompanied by swelling, breathlessness or new thirst, mention them to the team, since these can point to fluid retention or blood sugar shifts that need checking.

Does exercise make hormone therapy work better?

This question comes up in nearly every clinic conversation, and the honest answer has two parts.

Exercise does not make the medicine itself more potent. An aromatase inhibitor blocks estrogen production and a testosterone-suppressing injection lowers testosterone regardless of whether you walked that morning. Nobody should read a study headline and conclude that a workout lets them skip a dose or shorten a course; those decisions belong with the prescribing team.

What exercise does is make the treatment more tolerable and its side effects less damaging, which in practice helps people stay on therapy as prescribed. Fatigue, joint pain, low mood and weight gain are among the main reasons people struggle with long courses of endocrine therapy. Regular activity has consistent evidence for improving fatigue and mood in people with cancer and reasonable evidence for easing aromatase inhibitor joint stiffness. Staying on a treatment for the full recommended duration is where the real benefit to cancer outcomes sits.

There is also an active research question about whether physical activity independently influences cancer recurrence. Observational studies in breast, prostate and colon cancer have linked higher activity levels with better outcomes, but observational data cannot prove cause: healthier people may simply exercise more. Randomized trials designed to answer this are ongoing, and no guideline currently states that exercise treats cancer.

So the accurate framing is this: exercise does not change what the drug does to the tumor, but it changes what the drug does to you. It protects bone, muscle and mood, and it may help you complete a treatment that would otherwise be abandoned halfway. That is a meaningful contribution, even if it is not the headline some people hope for.

A sample weekly routine for exercise during hormone therapy

The table below shows one way to arrange a week that meets the CDC and WHO targets while respecting fluctuating energy. It is an illustration for discussion with your care team, not a prescription, and every element can be scaled down or swapped.

Day	Focus	Example	Approximate time
Monday	Strength	Sit-to-stands, hip bridges, wall press, band rows, heel raises	30 minutes
Tuesday	Aerobic, weight-bearing	Brisk walk, include a hill or stairs if cleared	25 minutes
Wednesday	Balance and mobility	Tai chi, single-leg stands, gentle stretching	20 minutes
Thursday	Strength	Repeat Monday, add one repetition or a firmer band	30 minutes
Friday	Aerobic, low impact	Cycling or swimming for heart and joints	25 minutes
Saturday	Aerobic, weight-bearing	Longer walk, dancing, gardening with lifting	30 minutes
Sunday	Rest or light movement	Short stroll, breathing practice	Optional

Adding the aerobic days together gives roughly 80 minutes of moderate activity, short of the 150-minute target on purpose. Many people begin here and build by adding five minutes to each walk every couple of weeks. The two strength sessions meet the minimum from the start, because that is the half of the prescription most relevant to bone and muscle loss.

On a difficult day, the substitution rule is simple: shorten rather than skip. A ten-minute version of any session preserves the habit, and habit is what carries a routine across years of treatment.

Notice that swimming and cycling appear once, not as the backbone. They are kind to sore joints and good for the heart, but they do not load bone, so weight-bearing walking and resistance work hold the anchor positions.

What the first weeks of a new routine usually feel like

The first fortnight rarely feels like progress. Muscles unfamiliar with effort ache for a day or two afterward, a sensation called delayed-onset muscle soreness that peaks around 24 to 48 hours and fades on its own. Aromatase inhibitor joint stiffness may feel more noticeable at first because you are moving joints through ranges they have not visited recently. Both are expected and are not signs of harm, provided pain is dull and general rather than sharp and localized.

Fatigue often follows a paradoxical curve. Many people report feeling more tired in week one and then, somewhere in weeks three to six, noticing that ordinary tasks feel lighter. Sleep frequently improves before strength does, and mood commonly lifts in the same window. These are the earliest rewards and worth tracking, because the scale and the mirror will lag well behind.

Strength gains become measurable within about six to eight weeks for most beginners, typically as more repetitions at the same load or the same repetitions with a heavier band. This early improvement is largely the nervous system learning to recruit muscle more efficiently; visible muscle change takes longer, and on hormone therapy longer still.

Bone changes are the slowest of all. A DEXA scan is usually repeated at intervals of one to two years, because meaningful changes in density take that long to register. The goal on a repeat scan during hormone therapy is often stability rather than improvement, and stability is a success.

Keeping a simple log, even a note on the phone recording what you did and how you felt, helps in two ways. It shows progress that is otherwise invisible, and it gives your team concrete information at the next appointment about what is working and what is hurting.

Bone loss during hormone therapy: calcium, vitamin D and the bone scan

Exercise is one leg of a three-legged stool for bone protection. The other two are nutrition and monitoring, and neither should be left to chance.

Calcium is the mineral bone is built from, and the body cannot make it, so intake has to come from food or supplements. The NIH Office of Dietary Supplements describes dairy products, canned fish with soft bones, leafy greens and fortified plant milks and juices as the main sources. Requirements vary by age and sex, and your team can tell you the daily target that applies to you and whether your diet already meets it. Supplements are not automatically better than food, and more is not always safer; the ODS fact sheet notes that excess intake carries its own risks.

Vitamin D is the hormone-like vitamin that allows the gut to absorb calcium in the first place. Skin makes it in response to sunlight, and it is found in oily fish, egg yolks and fortified foods. Many people on hormone therapy have their vitamin D level checked by blood test, and low levels are common, particularly in winter and in those who spend little time outdoors. Whether to supplement, and how, is a decision for the prescribing clinician based on that result.

Monitoring means a DEXA scan, typically before or early in hormone therapy to establish a baseline and then at intervals the team decides. The result is expressed as a T-score, a comparison of your bone density with that of a healthy young adult. Scores in a certain range are labeled osteopenia, meaning lower than normal density, and lower still is osteoporosis. If density is falling despite exercise and nutrition, the team may discuss bone-protecting medicines, a class of drugs that slow bone breakdown. Those are prescribed on individual assessment, and their use, timing and duration sit entirely with your oncologist.

Swimming, cycling, yoga: does the type of exercise matter on hormone therapy?

A common question, especially from people who already have a sport they love, is whether they can carry on. Someone who swims a mile three times a week wants to know if that still counts. The short answer is yes, keep swimming, and add two things.

Swimming and cycling are outstanding for cardiovascular fitness, joint comfort and mood, and both are often easier to tolerate than walking when aromatase inhibitors make knees and hips ache. Their limitation is that water and a saddle carry your weight, so the skeleton gets little of the impact signal that maintains density. A swimmer on hormone therapy who does nothing else may have an enviable heart and gradually thinning hips.

The fix is not to stop swimming but to layer in weight-bearing and resistance work: two short strength sessions a week and some walking or stair climbing on non-pool days. The pool itself can host resistance work too, since water provides drag; walking in the shallow end and pushing against the water with paddles both load muscle.

Yoga and Pilates sit somewhere in between. They build balance, core control and flexibility, all of which reduce fall risk, and many poses load the arms and legs against body weight. Two cautions: deep forward folds and loaded spinal twists should be modified if bone density is low, and hot yoga may be a poor fit for someone already managing hot flashes.

Running and jumping give the strongest bone signal but are hardest on joints and are not appropriate for everyone. Anyone with bone metastases, very low density or joint replacements should get specific guidance before adding impact.

The principle across all of it: keep what you enjoy, because enjoyment is what makes a routine last for years, then fill the gaps that your favorite activity leaves open.

What people often get wrong about exercise during hormone therapy

A few misunderstandings come up so often they deserve direct correction.

“Hormone therapy” means the same thing everywhere. It does not. Menopausal hormone replacement therapy, often abbreviated HRT, adds estrogen back to relieve menopause symptoms. Cancer hormone therapy removes or blocks estrogen or testosterone. The two are opposites in mechanism, and advice about one rarely transfers to the other. Search results about “what not to do on HRT” are usually about menopausal treatment and may not apply to someone on an aromatase inhibitor or androgen suppression.

Taking estrogen will melt belly fat. This question circulates in menopause forums. Estrogen influences fat distribution, but it is not a weight-loss treatment, and for someone with a hormone-sensitive cancer, adding estrogen is generally avoided altogether. Abdominal fat during cancer hormone therapy responds to activity and nutrition, not to reversing the treatment.

Exercise triggers a hormone that undoes the therapy. Vigorous exercise does cause short-lived rises in several hormones: adrenaline, cortisol, growth hormone and, in people with normal production, testosterone. These spikes last minutes to an hour and are part of normal physiology. They do not restore hormone levels suppressed by treatment, and they are not a reason to avoid exercise. Endorphins and muscle-released signaling molecules called myokines are also produced, and these are part of why activity improves mood and fatigue.

Rest protects thinning bones. The opposite is true. Bone that is not loaded loses mineral faster. The safe response to a low DEXA result is modified loading, not bed rest.

If you cannot manage the full 150 minutes, there is no point. The CDC is unambiguous that any amount of activity produces some benefit. Starting small is the plan, not a failure of the plan.

Questions to ask your care team about exercise during hormone therapy

Oncology appointments are short and often dominated by scan results and side effects. Arriving with specific questions about activity makes it far more likely the topic gets real attention. These are worth writing down.

• Is there anything in my scans or history that limits the type of exercise I should do, particularly impact or heavy lifting?
• Have I had a baseline bone density scan, and when will it be repeated?
• What was my T-score, and does it change the exercises I should avoid or emphasize?
• Should my vitamin D level be checked, and is my calcium intake adequate from food?
• Can I be referred to a cancer rehabilitation physiotherapist or exercise physiologist to design a program?
• Are there exercise programs for people during cancer treatment that I could join?
• Which symptoms during or after exercise should make me stop and call?
• How do my other medicines, such as blood pressure or blood thinning drugs, affect what is safe?
• If my joint pain from treatment gets worse, what are my options, and does exercise help or hurt in your experience?
• Is there anything about my treatment schedule, such as the timing of injections, that I should plan exercise around?

It also helps to ask who on the team owns this topic. In some centers it is the oncology nurse; in others a physiotherapist or a survivorship clinic. Knowing whom to contact between appointments when a new ache appears saves weeks of worrying alone.

Bring your activity log if you keep one. Concrete information, such as “I walked 25 minutes four days a week and my hips ached on the fifth,” produces better advice than “I’ve been trying to be more active.” The team can only adjust a plan they can see.

When to call your doctor

Most aches during a new routine are ordinary muscle soreness and settle within two days. Some symptoms are different and need a same-day call to your oncology team or, for the most serious, emergency services.

Contact your team promptly if you notice:

• Sudden, sharp or localized bone pain, especially in the back, hip or thigh, or pain that wakes you at night. On hormone therapy this can signal a fracture or a bone problem needing imaging.
• Pain, swelling, warmth or redness in one calf or leg, which can indicate a blood clot. Some breast cancer hormone therapies raise clot risk, and clots need urgent assessment.
• Chest pain, pressure, sudden breathlessness or coughing up blood. These may signal a clot in the lung or a heart problem and are reasons to call emergency services immediately.
• Fainting, near-fainting or a racing, irregular heartbeat during or after exercise.
• A fall of any kind, even one that seems harmless, when bone density is known to be low.
• New weakness, numbness or tingling in the legs, or loss of bladder or bowel control, which can indicate pressure on the spinal cord and is an emergency.
• Rapid weight change, marked swelling, excessive thirst or frequent urination, which may point to fluid or blood sugar changes.
• Fatigue so severe that it stops you from managing daily tasks despite rest.

You know your body on treatment better than any general article can. If something feels wrong, that instinct is information. Calling about a symptom that turns out to be nothing costs a phone call; ignoring one that turns out to be something can cost far more. Your treating team would rather hear from you.

Frequently asked questions

Does exercise make hormone therapy work better?

Not in the sense of making the drug more potent against the cancer. Exercise makes the treatment more tolerable by easing fatigue, joint pain, weight gain and low mood, and it protects the bone and muscle the therapy erodes. That helps people complete long courses as prescribed, which is where the benefit to outcomes lies. Never adjust a medicine based on your activity level; that decision belongs with your prescribing team.

What should I avoid while on hormone therapy for cancer?

Avoid prolonged rest and inactivity, which speeds bone and muscle loss. Avoid starting high-impact or heavy-lifting programs before your team has reviewed your bone density and scans. Avoid herbal or over-the-counter products marketed to boost estrogen or testosterone without discussing them with your oncologist. And avoid ignoring new bone pain, one-sided leg swelling or chest symptoms, which need prompt assessment rather than pushing through.

Will taking estrogen reduce belly fat?

No. Estrogen influences where fat is stored but is not a weight-loss treatment, and for anyone with a hormone-sensitive cancer, adding estrogen is generally avoided because it can feed the tumor. Abdominal fat gain during cancer hormone therapy is best addressed with regular strength and aerobic activity, attention to portion size and protein, and good sleep, all discussed with your care team rather than by altering hormone levels.

What hormone is triggered by exercise, and does it interfere with treatment?

Exercise briefly raises adrenaline, cortisol, growth hormone and endorphins, and in people with normal production a short rise in testosterone. Muscles also release signaling molecules called myokines. These changes last minutes to about an hour and are normal physiology. They do not restore hormones suppressed by cancer treatment and do not interfere with it, so they are not a reason to avoid activity.

Can I keep swimming during hormone therapy?

Yes, and most people are encouraged to. Swimming is excellent for the heart, mood and sore joints. Its limitation is that water supports your body weight, so it does little to protect bone density. Add two short resistance sessions a week and some walking or stair climbing on non-pool days to cover the gap. Check with your team about wound healing if you have had recent surgery or a port placed.

Is weight gain on hormone therapy inevitable?

It is common but not fixed. Lower sex hormones shift fat storage toward the abdomen and reduce muscle, while fatigue lowers daily movement, so the trend is upward without countermeasures. Regular strength training, meeting weekly activity targets and attention to diet help stabilize weight and preserve muscle. Rapid gain with swelling, breathlessness or new thirst should be reported, as it may reflect fluid or blood sugar changes.

How does hormone therapy and strength training fit together if I have never lifted weights?

Well, provided you start light and progress slowly. Beginners usually begin with body-weight movements such as sit-to-stands, hip bridges and wall presses, then add resistance bands. Two sessions a week of two sets of eight to twelve controlled repetitions per movement is a common entry point. A cancer rehabilitation physiotherapist can teach the movements and adjust them to any bone density or surgical limits your team has flagged.

How is bone loss during hormone therapy monitored?

Usually with a DEXA scan, a low-dose X-ray of the hip and spine that produces a T-score comparing your density with that of a healthy young adult. A baseline scan is often done before or early in treatment and repeated at intervals of one to two years, because bone changes slowly. Blood tests for vitamin D are also common. If density falls, your team may discuss bone-protecting medicines.

Why are my joints so stiff on an aromatase inhibitor, and does exercise help?

Joint pain and stiffness are among the most common effects of aromatase inhibitors, likely related to the loss of estrogen’s influence on joint tissue and pain processing. Many people find morning stiffness eases with movement rather than rest, and regular moderate activity has reasonable evidence for reducing it. A short walk before strength work often makes sessions more comfortable. Persistent or worsening pain should be discussed with your team.

Should I take calcium and vitamin D supplements during hormone therapy?

That is a decision for your care team based on your diet and blood results. Calcium from food sources such as dairy, canned fish with bones, leafy greens and fortified plant milks is generally preferred, and excess supplemental calcium carries its own risks according to the NIH Office of Dietary Supplements. Vitamin D levels are often checked by blood test, and any supplement is prescribed on that individual result.

References

• CDC: Adult activity, an overview of physical activity guidelines
• World Health Organization: Physical activity fact sheet
• NHS: Osteoporosis, prevention

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.