A Dr. Tabatha Barber YouTube video arguing that drastic short-term low-carb dieting combined with intense exercise can make the body enter a perceived starvation state. The speaker claims this signals the thyroid to downregulate, lowering metabolism so the body stops tapping fat stores and instead conserves/hoards incoming energy, which may impede weight loss.
Sometimes doing drastic things like just being low carb for four to six weeks or however long you can manage to, you know, barely eat anything or burning tons of calories. With high intensity cardiovascular activity, you will tap into your stores and burn fat and lose weight. But your body thinks you're starving itself and straining and struggling. And so it tells your thyroid, whoa, whoa, whoa, she's really struggling here. Turn everything down and your thyroid will downregulate, and then your metabolism will turn down, and then your body will no longer tap into your fat stores for fuel, and it will hoard every little thing that you take in.
