The Ideal Caloric Limit for Morning Coffee During Fasting

Intermittent fasting has become a popular dietary trend, with many people using it as a tool for weight loss, improved health, and overall wellness. One common question that arises for those practicing intermittent fasting is how to navigate their morning coffee routine. Specifically, how many calories can one consume in their morning coffee without breaking their fast? This article will delve into the science behind fasting, the role of calories, and how to enjoy your morning coffee without disrupting your fasting goals.

Understanding Fasting and Calories

Fasting, in its simplest form, is the process of abstaining from consuming calories for a specific period. The body, during a fast, switches from using glucose as its primary energy source to using stored fat. This metabolic switch typically occurs after 8-12 hours of fasting. Consuming too many calories, even in liquid form, can interrupt this process.

Caloric Limit for Morning Coffee During Fasting

Most experts agree that consuming up to 50 calories won’t significantly affect your fasting state. This is because such a small amount of calories isn’t likely to trigger a metabolic response. However, it’s important to note that everyone’s body responds differently, and what works for one person may not work for another.

What Can You Add to Your Coffee?

Given the 50-calorie limit, you might wonder what you can add to your coffee during your fasting period. Here are a few options:

  • Black Coffee: A cup of black coffee contains approximately 2 calories, making it an excellent choice for those fasting.
  • Unsweetened Almond Milk: A splash (around 30ml) of unsweetened almond milk adds about 4 calories.
  • Half and Half: A tablespoon of half and half has around 20 calories.
  • Butter or Coconut Oil: While popular in bulletproof coffee, these add significant calories. A teaspoon of either has around 50 calories, so use sparingly.


While it’s possible to have a low-calorie coffee during your fasting period, it’s essential to remember the purpose of your fast. If you’re fasting for weight loss, keeping your calorie intake minimal in the morning can be beneficial. However, if you’re fasting for autophagy or other health benefits, it might be best to stick to black coffee or water. As always, it’s important to listen to your body and adjust your routine as needed.

Remember, the goal of intermittent fasting isn’t to deprive yourself but to create a healthier eating pattern. So, if that splash of milk in your morning coffee makes your fast more manageable, it’s likely worth those few extra calories.