Salt does not break a fast. It contains no calories and does not raise insulin. A little salt during a fast actually helps with energy, cramps, and headaches by replacing the sodium you lose.
| Calories | 0 kcal |
|---|---|
| Breaks a weight-loss fast? | No |
| Breaks ketosis? | No |
| Breaks autophagy? | No |
| Insulin impact | None |
Salt is sodium chloride, a mineral with zero calories and no effect on insulin. During a fast the body excretes more sodium and water, which is a common cause of the fatigue, lightheadedness, and headaches people blame on hunger. A small amount of salt replaces it and keeps you comfortable.
A pinch of quality salt in water, or a few grains under the tongue, is enough. On longer fasts, pairing salt with potassium and magnesium is even better. Salt does not need to be avoided during fasting.
A pinch or two spread through the day is typical, increased modestly on longer fasts. Listen to your body and do not overdo sodium if you have blood pressure concerns.
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