5. Conclusions

• The low-carbohydrate (or ketogenic) diet is supported by a large body of clinical trial research demonstrating its safety and efficacy.
• Commonly held concerns, such as the idea that low-carbohydrate diets increase mortality or increases the risk of heart disease, are not supported by the evidence.
• There are no harmful side effects of low-carbohydrate diets.
• The “keto flu” that some patients experience at the start of the diet can be treated and avoided.
• Low-carbohydrate diets can be sustainable and nutritionally complete.