I remember a while back that lightman was talking about leptin and ghrelin levels and how to change them and all of that. Anyone have a link or know enough about the subject to describe it?

eat food increase leptin

ghrelin increases during a fasted state

y u wanna know

P much

leptin levels correlate with bf % as they are secreted via those same adipocytes. That's why it's a lipostatic factor. You lose bf%, leptin levels plummet, decreasing metabolic rate slightly more than the expected attenuation via reductions in both fat mass and ffm, also causing a net reduction in satiety/increase in permissive hunger. Gaining bf % increases leptin levels, chronically very bad obviously. Lower leptin levels are a good thing. However, when dieting, that's a paramount role for dense feeding days, typically consisting largely of CHOs, to stim leptin production. Ghrelin rises when fasting and in general in anticipation of foods in fact. These are rhythmic obviously, to an extent. The notable example concerns ghrelin levels to mitigate hunger during fasting windows - you become habituated to a time-restricted feeding protocol and thereby shift ghrelin secretion for the most part.

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