Low carb dieting reduces T3, the active portion of thyroid hormone that is directly responsible for metabolism. Low carbing might be fine to do short term during winter when light levels are low, but as humans age the metabolism slows anyways. Cycling carbohydrate intake might avoid the drop in T3.
I think low carb diets can be hard on some females over the age of 55 or so. Perhaps males are less prone to the slowed metabolism, unless they’ve been eating PUFA for decades. Then all bets are off.
Low carb dieting reduces T3, the active portion of thyroid hormone that is directly responsible for metabolism. Low carbing might be fine to do short term during winter when light levels are low, but as humans age the metabolism slows anyways. Cycling carbohydrate intake might avoid the drop in T3.
I think low carb diets can be hard on some females over the age of 55 or so. Perhaps males are less prone to the slowed metabolism, unless they’ve been eating PUFA for decades. Then all bets are off.