Your Body Starts Fading at 35: What a 47-Year Study Really Found

Most of us treat our physical decline as a vague, far-off worry, something that belongs to grandparents and pension plans.

For a country like India, where a large share of the population is in or approaching that age band and increasingly desk-bound, the finding is less a curiosity than a wake-up call.

The work comes from Karolinska Institutet in Sweden and draws on the Swedish Physical Activity and Fitness study, known as SPAF.

The headline result is straightforward.

This lines up neatly with a broader body of evidence on muscle ageing.