Strict ketogenic and carnivore diets can lead to lower body temperature and a feeling of being chronically cold.

“But I think that if most or many women or men took their temperature, they would see much lower than this. And I know this is interesting. I mean, personally, when I, you know, was strict keto, which is again a form of scarcity, a form of carbohydrate fasting, during my strict carnivore days, my body temperature was probably half a degree to 7 degrees Fahrenheit lower than it is now. And so, when I was living in San Diego at the time, I always felt chronically cold and I hated it.”