Intermittent Fasting on the Blood Microbiome

Participants are asked to abstain from any form of fasting or calorie restriction in one month of the study (which is also a pre-fasting washout for those volunteers that might be performing forms of fasting before the study) and then start with one month of intermittent fasting, with daily fasting duration from 7:30 to 18:30. Food is abstained from during fasting, only water and zero-calorie drinks like black coffee and unsweetened tea are allowed.