The keto diet can have several health benefits. According to research in the journal Nutrients, the ketogenic diet may offer some of the following benefits: 

Promotes weight loss

A keto diet may promote weight loss for a few reasons. For instance, research in Current Nutrition Reports found that a keto diet helps promote the breakdown of excess fats and improves insulin sensitivity.

Eating a diet high in healthy fats and protein also reduces hunger and increases feelings of fullness, contributing to weight loss. A meta-analysis published in the British Journal of Nutrition indicated that people who followed a keto diet lost two pounds more than those who followed a low-fat diet over a year. 

Because a ketogenic diet may promote weight loss, it may also help reduce the risk of type 2 diabetes, which is often associated with obesity. 

Improves gut health

A person’s diet often plays a role in their gut microbiome and overall gut health. Research into the effects of a ketogenic diet on gut bacteria is somewhat limited. However, some evidence suggests that eating a keto diet may positively impact the gut microbiome and epigenome, adding to microbial diversity. 

May benefit heart health 

Although the ketogenic diet is high in fats, individuals should select healthy fats, such as olive oil, nuts, and avocados. Some research shows that eating a diet rich in healthy fats may help decrease cholesterol levels. An article published in the journal Nutrients reported that some people who follow a keto diet have a significant reduction in low-density cholesterol, triglycerides, and total cholesterol. 

Might reduce the risk of certain types of cancer

Certain studies have focused on the effects of a keto diet in helping prevent or treat certain types of cancer. For example, some research indicates that a keto diet may be safe as a complementary treatment used along with traditional cancer treatments, such as chemotherapy and radiation therapy. Research in Aging found that a ketogenic diet may lower blood sugar and potentially cause the liver to produce ketones. Ketones do not benefit cancer cells. The cancer cells may become starved of energy, which decreases their ability to multiply and grow.  

However, more research is needed to conclusively recommend a ketogenic diet in people undergoing cancer treatment.