Articles on screening and prevention: which cancer, heart and metabolic tests are recommended, at what age and how often, and what happens when a screening result is abnormal.
Only a few food intolerance tests are scientifically validated: hydrogen breath tests for lactose or fructose malabsorption, blood tests for celiac disease, and a…
The omega-3 index test measures EPA and DHA, the two main marine omega-3 fatty acids, as a percentage of total fatty acids in red…
Adults can receive the HPV vaccine, but the benefit shrinks with age. US guidance recommends catch-up vaccination through age 26 and a shared decision…
HIV is prevented today by combining several proven steps: using condoms, taking pre-exposure prophylaxis (PrEP) if you are at ongoing risk, starting post-exposure prophylaxis…
Skin prick tests and blood tests both look for IgE antibodies to specific foods, but neither confirms a food allergy by itself. Skin tests…
Three noninvasive tests can detect H. pylori. The urea breath test and the stool antigen test both identify an active infection with roughly 95…
For people without diabetes, continuous glucose monitor (CGM) data mostly confirms normal physiology: readings between roughly 70 and 140 mg/dL, with brief rises after…
Two licensed dengue vaccines exist, and eligibility depends on age, where you live and whether you have had dengue before. Dengvaxia is limited to…
Routine pancreatic cancer screening is not recommended for people at average risk, because no test has been shown to lower deaths and false alarms…
A VO2 max test measures the largest amount of oxygen your body can use during hard exercise, usually in milliliters per kilogram per minute.…
Travel vaccines fall into three groups: routine shots you should already have (measles, tetanus, whooping cough, flu), destination-recommended vaccines such as hepatitis A, typhoid,…
Spirometry measures how much air you can force out of your lungs and how fast, using two key numbers: forced vital capacity (FVC) and…
Most adults with classic obstructive sleep apnea symptoms, loud snoring, witnessed breathing pauses, and daytime sleepiness, can start with a physician-ordered at-home sleep apnea…
Chikungunya is a mosquito-borne viral illness marked by sudden fever and severe, sometimes long-lasting joint pain. During 2025 it spread across Indian Ocean islands,…
The mpox vaccine (JYNNEOS, also known as MVA-BN) is recommended by the CDC for adults at higher risk of exposure, including gay, bisexual and…
Bird flu in humans is uncommon and, so far, spreads mainly from infected birds or dairy cattle to people who have close, unprotected contact…
A PET (positron emission tomography) scan is an imaging test that uses a tiny amount of a radioactive tracer, usually a sugar-like compound, to…
In the United States, the CDC recommends the Shingrix shingles vaccine for all adults aged 50 and older, and for adults 19 and older…
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