@J.R.L Also my one hundred year old friend came from a poor family and this is what Ray Peat said about that…
“Low thyroid function, relative over-feeding, and the presence of unsaturated oils in the diet are known to accelerate sexual maturity. Early sexual maturity has been associated with premature aging and early death. Fish, octopuses, mice, humans, and plants offer examples in which reproductive maturity initiates the aging process. Although it used to be said that “hot tropical” people had early puberty, and “cold northern” types had late puberty, the best available data contradict that opinion. The oldest averages for the occurrence of puberty occur in tropical regions. (Figure 3) Mere calorie restriction can delay puberty (and this usually means a low fat diet, for poor people in the developed countries) as can be seen in data from Appalachia; late puberty, accompanied by very low birth weight for babies, is the typical pattern of poverty. Given enough fat (especially vegetable oil, including that in beans and corn), harsh conditions can probably cause earlier puberty. but I don’t know of any clear evidence on this subject.” -Ray Peat
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Cari