If you’ve heard a lot about “intermittent fasting” recently, you’re probably wondering what’s so popular about the latest dieting trend. There was Atkins and South Beach, then came keto and paleo—so how’s this one different?

Well, intermittent fasting isn’t so much a “diet” because there aren’t restrictions on what you can eat. Fasting is more a pattern of eating that uses hard-and-fast rules to guide when you eat for weight loss or control. While there are various routes to take like alternate-day fasting and periodic fasting, where you skip food for a day (or days) or randomly through the month, basic daily fasting is a popular option. See how much you know about how this time-focused eating works—and how it may affect your health.


Fasting quiz

See how much you know about how this time-focused eating works—and how it may affect your health.

1 / 5

Wile intermittent fasting is a suitable strategy for someone with obesity, it is not ideal for which candidate?

2 / 5

What are the possible side effects from fasting?

3 / 5

Does fasting allow drinking during food-free time?

4 / 5

Daily intermittent fasting typically means eating all your calories in which set time frame?

5 / 5

Breakfast is the most important meal of the day if you’re trying to lose weight.

Your score is

The average score is 73%


This portion of the Teladoc website occasionally offers health, fitness and nutritional information and is provided for educational purposes only. You cannot rely on any information provided here as a substitute for or replacement of professional medical advice, diagnosis or treatment. Teladoc cannot assure that the information contained on this site always includes the most recent findings or developments with respect to the particular subject matter covered.

If you ever have any concerns or questions about your health, you should always consult with a physician or other healthcare professional. Do not disregard, avoid or delay obtaining medical or health-related advice from your healthcare professional because of something you may have read on this site. The use of any information provided on this site is solely at your own risk.

If you are in the United States and think you are having a medical or health emergency, call your healthcare professional, or 911, immediately.