"Like most highly restrictive diets, it is difficult to meet nutritional needs while doing keto," says Stone.
"Like most highly restrictive diets, it is difficult to meet nutritional needs while doing keto," says Stone. "It often comes with uncomfortable side effects like constipation and the 'keto flu.' Also, the long-term health consequences are not well understood." Highly restrictive diets are notoriously hard to follow and can impact your relationship with food in a negative way. Other negative side effects of the keto diet include bad breath, hair loss and damaged gut health.