Though eating keto can help you lose weight relatively easily, research shows that this diet should only be used short-term for several reasons. The weight-loss benefits of a keto diet seem to level out over the course of a year in comparison to other diets, like a low-fat, high-carb regimen.
Also, there is no evidence to suggest any long-term benefits from this diet, as studies on the effects of a keto diet have not extended for longer than two years.
Additionally, a keto diet can lead to several potentially serious health concerns. For one, putting the body into ketosis can have some uncomfortable flu-like side effects, such as headaches, dizziness, and nausea, which is why some call it the "keto flu."
A keto diet can also cause stressed kidneys, digestive issues, nutrient deficiencies, low blood sugar, and even bone decay.
In short, a keto diet can be very risky, and it is not the long-term healthy eating solution that it is sometimes marketed as.