According to Harvard Health, keto can lead to liver and kidney issues, nutrient deficiencies, and side effects like ...

Popular diets like the keto and Mediterranean diets encourage followers to take pasta, bread and other carbohydrate-rich foods out of their kitchen, and to instead focus on proteins and vegetables.

Other side effects may include headaches and brain fog. Many keto dieters also report a metallic or “nail polish” taste in the mouth, leading to bad breath, in the initial stages of the diet ...

Emerging research has cast doubt on the popular paleo and keto diets, which emphasize high protein and low carbohydrate ...