The knack of aging well, from a bone surgeon in Japan
Stay strong, mobile and young — by the evidence, not the hype.
A Japanese orthopedic surgeon checks what the research actually says about staying strong, mobile and young — muscles, bones, joints, connective tissue, skin and hair.
Movement & Strength
Muscle, bone and joints — the structures that decide how long you stay mobile. This is the surgeon's home ground.
BridgeConnective Tissue
Skin, tendon and cartilage are built from the same family of proteins. What ages one often ages the others.
Skin & HairTrend Check
Popular skin and hair claims, graded against the research. We check the evidence; we do not sell or recommend products.
Latest
Biotin for hair: a popular supplement with a hidden lab-test problem
Biotin has helped hair only in people with a deficiency or an underlying condition. In everyone else the evidence is missing — and high doses can distort important blood tests.
BridgeCollagen supplements for skin and joints: what the best trials say
Pooled trials say collagen helps skin, but the independent, high-quality ones don't. For joints, the benefit is short-lived and the evidence weak. A surgeon reads the fine print.
CoreGrip strength: the vital sign hiding in your hand
Weaker grip goes with shorter life in huge studies across the world. What that does and does not mean, and what you can actually change.
Our promise
Every claim carries a grade.
Each article opens with a table that rates its main claims from A to D, with the studies behind them one click away. When the research is weak, we say so — especially when the topic is fashionable.
- A · StrongSystematic reviews or randomized trials point the same way
- B · ModerateConsistent observational studies; cause and effect not proven
- C · EarlySmall, short, animal or lab studies only
- D · UnsupportedNo good evidence, or the evidence points against it
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