Fitness and Longevity: What VO2max Predicts
What a study of 122,000 people found about fitness and mortality risk. Why cardiorespiratory fitness (VO2max) is one of the strongest, and most changeable, predictors of a long life.
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Muscle Is a Survival Organ
What the research on muscle mass and survival actually shows. Why muscle matters for longevity, and what to do about it.
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Does Creatine Damage Your Kidneys?
Why creatine makes one blood number look higher, what 20 studies found about real kidney function, and when to check.
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Does Creatine Cause Hair Loss?
There is no good evidence creatine causes baldness. The fear traces back to a single small study that measured a hormone, not hair.
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Is Creatine Safe?
One of the most studied supplements on earth. For healthy adults at recommended doses the evidence says yes, and most of the feared side effects are not supported by the evidence.
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Creatine, the Brain, and Healthy Aging
Beyond the gym, creatine supports the brain's energy supply, may help thinking under stress or sleep loss, and helps older adults hold on to muscle.
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