The low-down on leptin, as I am able to make out, is that it is the satiety signaling hormone. But unlike ghrelin, which is produced by the stomach - the dispatch point - to signal hunger, leptin is produced by fat cells - from the warehouse - to signal that fat stores are full. And leptin isn't an occasional burst but an ongoing, thus measurable, level. And, as such, is susceptible to downregulation, which means that fewer leptin receptors will be produced if leptin levels are continually high. Which might be why overweight people, despite high leptin production, rarely feel satisfied...
It turns out that, for body-builders who go for long periods on low-carb diets, the occasional cheat day with respect to carbs is counselled to reset leptin levels.
I tried the original Atkins diet many, many years go when it first came out. I haven't gone carbless since, so this cheat day bonanza shouldn't be part of my life. Ho hum!
On a cheerier note, I did discover two chatty and rather likeable publications about food, cited below. This was from the Attaché youtube video on Singapore, a charming place in Asia I might well never visit. So it goes.
http://www.saveur.com/what-to-cook-this-weekend-0318
http://luckypeach.com/
https://www.youtube.com/channel/UCbkrifxiaHa0nVwW2sDCVqw
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