Over 90 days, benefits of cutting out sugar become noticeable. Dr Manisha Arora, director, internal medicine said many people experience weight loss, improved insulin sensitivity, and more stable energy levels. "Skin may appear clearer, mood swings reduce and gut health often improves," she added. "By the end of 90 days...risk for...type 2 diabetes, heart disease...may be reduced," Dr Arora said.