Is Keto diet Safe and Does It Have Side Effects?

7-Other impacts

Other side effects can include bad breath, fatigue, constipation, irregular menstrual cycles, decreased bone density, and sleep issues.

Then there are other effects that are not well studied, mostly because it’s hard to track dieters on a long-term basis to find out the lasting effects of the eating plan.

“We don’t know for sure the effects on blood cholesterol, some studies show increases, others show decreases, but we don’t know over the long-term because of a lack of research,” Palmer said.