Until recent changes in her eating habits, including intermittent fasting, Celeste Allred said she felt a lack of energy and focus.

She said adopting a schedule of intermittent fasting improved her focus and cognition.

In a study presented to the American Heart Association last November, Horne and his team found intermittent fasting, going once a week for 24 hours with only water, reduced inflammation in the body.

"They feel like they are more able to control their eating habits rather than having the desire for food controlling them," he said.

Horne said even fasting 12 hours from dinnertime until morning can be beneficial.

"I like being able to think," she said.