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These Keto Diet Side Effects Are Seriously Strange

Women's Health Logo By Marygrace Taylor of Women's Health | Slide 2 of 15: Keto flu is a real thing. Cutting your carbs to the bone and going into a state of ketosis (where your body burns fat for energy) can bring on a cluster of uncomfortable symptoms, such as headaches, fatigue, muscle aches, nausea, and diarrhea. The side effects are the result of your body transitioning to using fat as its primary source of energy instead of carbs, explains Kristen Mancinelli, M.S., R.D.N., author of The Ketogenic Diet. Once it adapts to the new fuel source (usually within a week or two), you’ll start to feel better.RELATED: Hey, Let's Talk About Why You Want to Lose Weight

You might get hit with the “keto flu”

Keto flu is a real thing. Cutting your carbs to the bone and going into a state of ketosis (where your body burns fat for energy) can bring on a cluster of uncomfortable symptoms, such as headaches, fatigue, muscle aches, nausea, and diarrhea. The side effects are the result of your body transitioning to using fat as its primary source of energy instead of carbs, explains Kristen Mancinelli, M.S., R.D.N., author of The Ketogenic Diet. Once it adapts to the new fuel source (usually within a week or two), you’ll start to feel better.

RELATED: Hey, Let's Talk About Why You Want to Lose Weight

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