Though one glass of something strong won't knock your body out of ketosis, drinking alcohol while following a keto diet will affect your progress. Specifically, it will slow down your rate of ketosis. "The liver can make ketones out of alcohol," Atkins nutritionist Colette Heimowitz told Elite Daily.

How does alcohol affect ketosis?

When in ketosis, alcohol halts the metabolism of fat to metabolize alcohol. Alcohol is broken down by several enzymes into acetate, which your body uses for energy. When alcohol is consumed during ketosis, your body will convert to using acetate as an energy source rather than fat.

Does alcohol increase ketone production?

With low fat diets (5% of calories), alcohol (46% of total calories) did not induce ketonuria or hyperketonemia, suggesting that a combination of alcohol and dietary fat is necessary. The addition of alcohol to rat liver slices did not affect ketogenesis.