Keto Flu Symptoms That Signal The Keto Diet Is Making You Sick

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Ketogenic diet enthusiasts love talking about how great they feel eating loads of fat and very few carbs. (No more brain fog! Zero sugar cravings!) What they might not mention? Going from a regular diet to a keto diet can temporarily cause some pretty unpleasant side effects.

We’re talking about keto flu—a cluster of flu-like symptoms that many newbies experience in the early days of adopting a ketogenic diet—and it’s not exactly fun. Whether you’re thinking of committing to a keto way of life or you’re already on the keto bandwagon, there are a few things you should know about the keto flu.

What is the keto flu? What are the symptoms?


Keto flu is a group of side effects that hit most people when they first switch from a higher carb diet to a ketogenic one. Many of them are similar to what you might feel like when you have the actual flu (hence the name). Keto flu symptoms typically include things like:

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