In this conversation with Gen Seasoned, Dr. Navin Gnanasekaran walks us through why longevity thinking should start in our 30s (and what to do instead if one is already past it), busts the myth that starving yourself is the same as fasting smart, and explains why multivitamins are, in his words, expensive urine.
In his book The 100-Year Blueprint: An Indian Doctor's Guide to Longevity, this physician and medical futurist makes the case that India doesn't need to borrow the West's rulebook on ageing — because Indian bodies are simply different. We're the "thin-fat" phenotype, we run on smaller metabolic engines than the processed food we feed them, and our arteries, quite literally, are thinner.
He also talks about the quarter-quarter-half plate rule, and why your non-stick pan and paper chai cup might be quietly working against you. Plus, why it may be a good idea to take up pickleball or any racket sport. Listen in!
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Timestamps
01:05 – Why India needs more longevity conversations, and why he wrote the book to read like fiction, not a textbook
02:52 – When should longevity thinking actually start? The lifespan vs. healthspan gap
05:35 – What people already in their 50s can still do — managing vs. preventing
07:13 – The Indian "thin-fat" body type explained
08:10 – The Ambassador-and-aviation-fuel analogy: capacity-load mismatch
10:05 – Why Western cutoffs (waist circumference etc.) don't apply to Indians
10:37 – Thinner arteries, earlier heart disease — the cardiac surgeon story
11:56 – What inflammation actually is — and what "inflammaging" means
15:02 – Countering inflammation: oil swaps, omega-3s, stress, fried food
18:02 – Intermittent fasting: separating the hype from the evidence
20:03 – Why crash diets crash your metabolism
22:34 – How time-restricted eating actually works — the 12–14 hour window
23:56 – Time-restricted eating for diabetics
24:05 – Handling hunger pangs: the thirst-vs-hunger trick
26:00 – The quarter-quarter-half plate rule
29:32 – India's protein gap — and how to actually fix it
32:22 – Supplements: why multivitamins are "expensive urine"
33:52 – Vitamin D, B12, creatine — the supplements actually worth taking
34:41 – Collagen: hype vs. evidence
36:22 – Is your kitchen poisoning you? Plastics, non-stick pans, aluminium foil, paper cups
38:47 – Loneliness = smoking 15 cigarettes a day
42:29 – Building a "third place" and real social connections
45:00 – The Copenhagen study: why racket sports (and pickleball) beat almost everything else
48:38 – Brain stimulation beyond Sudoku — novelty, discomfort, and neuroplasticity
52:14 – NEAT: fidgeting, non-exercise movement, and quiet calorie burn
54:04 – Rapamycin, mTOR, biohacks — gimmicks vs. getting the foundations right
56:52 – Haldi doodh: swapping the evening coffee for turmeric milk
58:24 – Closing message: building a nation that lives to 100, joyously
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