The keto flu is not an actual flu or illness. It’s a set of ketosis symptoms that might appear during the induction phase of a ketogenic diet, when the body is adapting itself to your new diet – they are also commonly called carbohydrate withdrawal symptoms.
The keto flu symptoms include: headaches, “brain fogginess”, feeling lethargic, nausea, muscle cramps and irritability. This happens because your body is burning up the lasting glycogen stores and because ketosis has a diuretic effect, which means you’re losing a lot of electrolytes and water, which you will have to replenish. Many of the keto flu symptoms can be reduced or eliminated by staying hydrated.
So don’t give up, thinking that because of these ketosis symptoms, the keto diet is not for you. It is just a phase and the keto flu symptoms should dissipate in a few days. For some people it can take longer to get over keto flu, especially if you are detoxing from a diet high in refined carbohydrates and sugar as you may also experience sugar withdrawal symptoms. Stay hydrated and eat keto diet foods rich in electrolytes (sodium, magnesium, and potassium). If necessary, take supplements, especially magnesium.
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