> What you are describing is so-called "thrifty gene hypothesis", it makes a lot of sense, but it hasn't been corroborated by actual genomic observations yet
The problem with thrifty genotype is hunter-gatherers seem to have had less caloric volatility (if we control for habitat quality) [1]. So to the degree such genes might have emerged, it would have had to have been selected for during migrations. That, in turn, requires it be a relatively human-specific adaptation, which frankly makes me sceptical.
The problem with thrifty genotype is hunter-gatherers seem to have had less caloric volatility (if we control for habitat quality) [1]. So to the degree such genes might have emerged, it would have had to have been selected for during migrations. That, in turn, requires it be a relatively human-specific adaptation, which frankly makes me sceptical.
[1] https://pubmed.ncbi.nlm.nih.gov/24402714/