Article Blood Sugar & Weight
Caffeine Tolerance: Why Coffee Stops Working
Regular coffee drinkers are often not getting a lift so much as avoiding a deficit. Here is what tolerance does, how fast it develops, and…
Health (37 reviews)
Everyday physical health explained plainly: why symptoms happen, what the evidence says helps, and when something needs a doctor.
Article Brain, Memory & Focus
Diet and Brain Aging: What the Trials Actually Found
Observational research linked certain diets to slower cognitive decline. Then the randomized trials arrived, and the results were more…
Article Vision & Hearing
Eye Floaters: What They Are and When They Signal a Problem
Floaters are usually a harmless part of eye aging, and a sudden shower of them can be the first sign of a retinal tear. The distinction is…
Article Men's Health & Prostate
Testosterone and Aging: What Declines, What Matters, and What Helps
Testosterone falls slowly with age, and the symptoms blamed on it are frequently caused by something else entirely. Here is what the…
Article Men's Health & Prostate
Enlarged Prostate (BPH): What It Is and What the Evidence Supports
An enlarged prostate is close to universal with age, and prostate size predicts symptoms poorly. Here is what BPH is, what it is not, and…
Article Teeth & Oral Health
Bleeding Gums: Why It Happens and What to Do About It
Bleeding when you brush is the most commonly ignored sign in oral health, and the most common response to it, brushing more gently, is…
Article Brain, Memory & Focus
The Gut-Brain Connection: What Is Established and What Is Not
The gut and brain communicate constantly, and that fact has been stretched to support claims the research does not carry. Here is where the…
Article Brain, Memory & Focus
Mental Fatigue: Why Thinking Is Tiring and What Helps Recovery
Mental fatigue is a distinct state from sleepiness, and one that a nap does not reliably fix. Here is what the research suggests is…
Article Brain, Memory & Focus
Cognitive Reserve: Why Some Brains Age Better Than Others
Autopsy studies found people with substantial Alzheimer's pathology who had shown no symptoms in life. The concept built to explain that…