How to Lower Your Resting Heart Rate: Training a Stronger Pump
Regular aerobic exercise is the most reliable way to lower a resting heart rate; consistent endurance training typically trims several beats per minute within…
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Blog Category
Heart & Metabolism
Articles on the heart and metabolism: blood pressure, cholesterol, blood sugar, heart rhythm and the risk factors that link them. Chest pain, breathlessness or fainting need urgent care, not reading.
Blood Sugar Levels After Eating: Normal Ranges, Spikes and What Your Numbers Mean
For most people without diabetes, blood sugar after eating typically peaks within about an hour and stays below 140 mg/dL (7.8 mmol/L) two hours…
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Pyrexia: The Medical Term for Fever, Its Grades and Causes, and When It Becomes Dangerous
Pyrexia is the medical term for fever: a body temperature of about 100.4°F (38°C) or higher, driven by the brain raising its thermostat in…
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Dizzy After Eating: Why It Happens, Postprandial Hypotension and When to See a Doctor
Feeling dizzy after eating most often comes from a temporary drop in blood pressure as blood shifts toward the digestive system, a condition called…
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Diaphoresis (Cold Sweats): What Excessive Sweating Can Signal and When It Is an Emergency
Diaphoresis is sudden, heavy sweating that the surroundings do not explain: no heat, no exertion, often with cool, clammy skin. It is a sign,…
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Cholesterol Numbers Explained: Is 5.3, 5.5 or 5.7 High?
A total cholesterol of 5.7 mmol/L (about 220 mg/dL) is above the 5.0 mmol/L level that UK guidance considers ideal for healthy adults and…
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Thyroid Symptoms You Do Not Expect: Itching, Hair Loss, Headaches, Dizziness
Thyroid-related itching is usually generalized rather than confined to one spot, though many people notice it most on the shins, forearms, scalp, and back,…
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Sedentary Lifestyle: What Sitting Does and What Undoes It
A sedentary lifestyle typically means spending most waking hours sitting or reclining, and researchers often flag eight or more hours of daily sitting combined…
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Circadian Rhythm: The Body Clock Running Everything
A circadian rhythm is the roughly 24-hour internal cycle that times sleep, hormone release, body temperature, blood pressure, and metabolism. It is set mainly…
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Blue Zones: What the Longest-Lived Places Really Have in Common
Blue zones are five regions: Okinawa (Japan), Sardinia (Italy), Ikaria (Greece), Nicoya (Costa Rica), and Loma Linda (California), where residents reportedly reach very old age at…
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Antibiotic Resistance: Why Finishing the Course Became Complicated
Antibiotic resistance develops when bacteria evolve to survive the drugs meant to kill them, driven mainly by overuse and misuse of antibiotics in people…
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How to Boost Your Immune System: What Actually Works Is Mostly Boring
Most evidence-backed ways to strengthen immune function are unglamorous: sleep seven to nine hours, eat a varied diet rich in plants and protein, move…
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The Lymphatic System: Your Second Circulation, Finally Explained
The lymphatic system is a network of vessels, nodes, and organs that runs alongside your blood circulation. Each day it returns roughly three liters…
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