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Keto is fantastic, everyone says. It\\u2019s a great way to lose weight,\\xa0improve cognition, and stave off degenerative disease. It may help your\\xa0performance in the gym and on the track. It could even give Grandpa some respite from Alzheimer\\u2019s.

But it\\u2019s hell on your\\xa0thyroid. Right?

Keto detractors and proponents alike often warn that remaining in ketosis will tank your thyroid. The thyroid\\u2019s an important gland, exerting major influence over essential systems like fertility, energy, metabolism, body temperature regulation, blood lipids, and general wellness. It controls the metabolic rate of every organ in the body. We want it working well, so this is a major blow to keto\\u2014if the criticism holds true. Fortunately, there\\u2019s much more to this story.

(This Mark\'s Daily Apple article was written by Mark Sisson, and is narrated by Tina Leaman)