Evidence Backed Articles To Increase Lifespan

Trials consistently show berberine lowers fasting insulin, HOMA-IR and total testosterone in women with PCOS. What that means in practice, where the evidence stops short of fertility claims, and the pregnancy safety caution that matters most.

NMN raises NAD+ in human blood. That much is settled. Two meta-analyses published in 2025 looked at overlapping trials and reached opposite conclusions about gait speed, and FSSAI has called NMN an unapproved ingredient for supplements in India.

In several well-designed trials, L-theanine did nothing placebo did not also do. A second finding explains why: the studies that showed benefit and the studies that showed nothing were measuring different people. What the evidence supports, and who it will not help.

L-tryptophan is a raw material, not a sleep ingredient. What the pooled trial evidence found on night waking, why a protein-heavy dinner changes the outcome, the 1989 contamination history that makes batch testing non-negotiable, and six checks for any L-tryptophan supplement sold in India.

L-theanine lowers pre-sleep arousal rather than sedating you. What the two 2025 systematic reviews actually found, why your daily chai falls far short of research doses, and six checks worth running on any L-theanine supplement sold in India.

Melatonin is a timing signal, not a sedative. What the pooled trial data actually found, why lab testing keeps catching melatonin bottles with the wrong amount inside, and the six checks worth running on any melatonin supplement sold in India.

Why most Indian diets fall short for healthy ageing, the protein gap almost nobody is addressing, common nutrition myths that quietly cause harm, and what actually works for Indians eating Indian food.

Why yoga and cardio alone are not enough for healthy ageing in Indians, what strength training actually does to metabolism and insulin sensitivity, and how to build a fitness routine that compounds over decades.

How chronic stress and loneliness quietly damage physical health in Indians, what the mind-body connection actually means biologically, and the evidence-backed habits that restore balance.

Why memory slips, focus fades, and motivation flattens after 40 and the specific biological mechanisms behind each. Everything The Oak Age has written on brain health and cognitive function.

Which supplements are actually worth taking for Indians, how long to use them, what to watch out for, and how to tell a clean formula from one full of fillers. Everything The Oak Age has written on supplements.

Why fat loss is harder for Indians than generic advice suggests, why the scale is lying to you, and the evidence-backed approach to changing body composition that actually lasts.

Why Indians bloat after every meal, how the microbiome breaks down after 40, and the daily habits that restore gut health without expensive supplements or elimination diets.

Why your body changes so dramatically after 40 — and what testosterone, oestrogen, and cortisol have to do with it. Everything The Oak Age has written on hormones and metabolic health.

Everything The Oak Age has written on longevity and healthy ageing — why Indians age faster at the cellular level, what NAD+ and mitochondria have to do with it, and the daily habits that actually extend healthspan.