Tag: Keto crash

The so-called keto flu is a group of symptoms that may appear in a person two to seven days after starting a ketogenic diet. So, what is the keto flu crash and what causes this challenging adaptation period? It is the body's reaction to a sudden and drastic reduction in carbohydrate intake as it shifts from using glucose to burning fat for fuel.

According to researchers at the University of British Columbia, a single high-sugar beverage can cause temporary damage to blood vessel walls in individuals on a keto diet. This study, like countless anecdotes, confirms that eating sugar while in ketosis triggers a rapid and powerful metabolic shift.