A series in six stages
Health by age what is proven at each stage of life, in plain words
Each stage of life has a different job. In your 20s it is building the base. In your 40s it is building reserve. After 60 it is keeping strength, balance and independence. After 80 it is protecting independence and acting early when something changes. At 100 it is another good day, on your own terms.
This series follows one life from birth to 100, written for Indian families. Each stage is a set of one-page guides you can send on WhatsApp or print, with the evidence listed claim by claim: Indian sources where they exist, WHO and international guidelines for the rest.
Five stages are ready. The sixth, from birth, is being written and will appear here when it is complete.
Sucheendra Kumar PalaniappanComputational biologist
- 0From birth
- 20After 20
- 40After 40
- 60After 60
- 80After 80
- 100After 100
Healthy after 20 use these years to become strong
Moving, lifting, bone, Indian food, sleep, your mind and sexual health, and the first numbers and vaccines to know.
Read Healthy after 20
Healthy after 40 build reserve before you need it
Strength, metabolism, Indian food, sleep, the numbers to know and the screening to ask for, ending with a 10-year plan.
Read Healthy after 40
Healthy after 60 stay strong, steady and independent
Five simple guides for seniors and the same five in depth for their families, from movement and protein to screening and supplements.
Read Healthy after 60
Healthy after 80 protect independence and act early
Legs and falls, frailty and sudden confusion, medicines, eating safely, sight and hearing, a safer home and a circle of care.
Read Healthy after 80
Healthy after 100 another good day, on your own terms
What centenarian studies do and do not show, your choices, good days, a safer home, food, stories and care that serves the person.
Read Healthy after 100
Being written
Each stage is published only when its guides and sources are complete.
- From birthGrowth, feeding, vaccines and sleep in childhood, and the habits that start in the teens.
How these are made
- Guidelines, not headlines. Every number comes from a guideline, a national survey or a systematic review, linked on each page.
- Written for Indian families. Indian surveys and guidelines first, and the food Indian families actually eat.
- Habits before products. Tests and supplements come after the basics, and only with a reason.
- Nothing to sell. No clinic, no supplements, no product. Free to print and share.
Want the science behind it?
Longevity, Interpreted. is my weekly reading of longevity research: what was shown, at what stage, and what it does not yet support.