Headache
Another common side effect of ketosis is a headache. The sudden bursts of pain occur due to the consumption of fewer sugar and carbohydrates. They may also happen due to an electrolyte imbalance and dehydration.
Ketosis headaches sometimes last a day or up to a week. But there are also reports of experiencing migraine-like symptoms for longer. Since headaches may be symptoms of a dozen other health issues, longer, bothersome, and more painful episodes merit a visit with a medical professional. A specialist can rule out and treat an underlying condition causing severe headaches, which may be beyond ketosis, so they do not cause debilitating complications.
Interestingly, 2017 and 2018 studies suggest that a keto diet could cure chronic and episodic migraines and drug-resistant cluster headaches. According to the research, it happens as the body transitions into ketosis, when the headaches start to clear up, and the cure begins. However, they require more research to confirm whether a keto diet is truly effective against those particular types of headaches or not.
