This is a warning for the women it is still working for. Keto. Carnivore. Fasting. Eating far too little for far too long. It works, and that is the problem. It is how women end up in my practice with the hormones of a woman a decade older. I am a functional nutritionist, 20 years in women’s hormones. This is the pattern I see more than any other. She trains. She eats clean. She is the most disciplined person she knows. She found something that worked and did what disciplined people do. She kept going. Cortisol takes over the job her food should be doing. A randomized trial in Psychosomatic Medicine put 121 women through three weeks. The group at 1200 calories a day had higher cortisol output. That clarity she is running on is borrowed. Then her thyroid slows. In the Journal of Clinical Endocrinology and Metabolism, adults restricting for years had significantly lower active thyroid hormone than people eating normally, and body fat did not explain it. Cutting carbs does it at the ...