A group of scientists from the Weizmann Institute studied the changes that occur in the body of mice and humans after quitting cigarettes. It turned out that because of the cessation of the effect on the gut of nicotine, the composition of gut bacteria and metabolism also change. The results of the study can be found in the publication Nature.
The researchers also identified two molecules that could explain the effects of quitting smoking related to slowing metabolism. The first was dimethylglycine, or DMG, the production of which increased when the body was exposed to cigarette smoke. The second was acetylglycine, or ACG, which, on the other hand, decreased with exposure to smoke and increased with quitting.