There’s one simple rule when it comes to choosing your drinks when you’re fasting: Avoid anything with calories. The goal of intermittent fasting is to stay in a “fasted state,” eating or drinking no carbohydrates, fats, or protein for a certain period of time.
That allows your body to stop producing insulin, so it uses ketones stored in the fat for energy instead of glucose stored in the liver. In a 2019 article in The New England Journal of Medicine, some scientists believe that this process, called ketogenesis (which you may have heard of in relation to the keto diet), may slow aging, reduce chronic inflammation, and lead to better blood sugar control.
Because diet soda doesn’t have calories, it’s usually OK to drink while you’re fasting. But the scientific community is debating the impact of artificial sweeteners on two very key components in the intermittent fasting puzzle: insulin and hunger. (More on that later.)
Excerpted from MSN