The OMAD diet

Goal: to lose weight

Be aware: this is only the goal of this diet, not necessarily its outcome. Results vary from person to person. Consult your doctor or dietician before starting this (or any other) diet.

The One-Meal-A-Day (OMAD) Diet

The OMAD diet is an (extreme) form of fasting. You only eat once a day. The rest of the day you eat nothing.

On the homepage you can compare the OMAD diet with other diets.

The 23:1 method

The one meal per day has to be consumed within one hour. The rest of the day (23 hours), you have to fast. During these 23 hours you can drink water, tea, coffee or other drinks without calories.

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The rules of the diet

The OMAD diet has a number of rules:

  • You can only have one meal a day
  • You must consume the meal within one hour
  • The meal must fit on a 'normal' plate, for example a plate with a diameter of 28 cm.
  • You may not put too much food on your plate. Different 'heights' are mentioned for this: the food must not be more than 3 cm or 7.5 cm above the plate.
  • You should eat your meal at around the same time every day. This does not have to be at exactly the same time, but within a window of 4 hours, for example.

Eat what you want

Although the time in which you eat is very limited and the volume of the meal is also somewhat restricted, there are no rules about what you can eat.

In the book 'The OMAD diet' by Alyssa Sybertz there are several recipes that are meant to prevent a lack of nutrients and energy.

Be aware!

This is an extreme diet. Consult your doctor or dietician before starting this (or any) diet.

Similar diets

Examples of other fasting diets are the 8-hour diet, the 5:2 fasting diet, the 4:3 diet, the TRF diet and the dr. Ludidi method.

Another diet where you are allowed just one meal a day is the Simplest diet.

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Goals

  • Lose weight
  • Part time

Exercise

As you see fit

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Dietitians

With the professional help of a dietitian it should be easier to reach your goals. Please contact a dietician in your area or talk to a doctor before starting any diet.

General warnings

Please take note that most diets do not have a scientific basis.

Consult your doctor or dietician before starting a diet, especially if you have a chronic condition like diabetes, cardiovascular disease, lung disease or kidney disease.

Eating disorders

If you think you might have an eating disorder (like anorexia or bulimia), it is important to look for professional help. Contact your (house) doctor or find help elsewhere. Here you can find a list of several websites that can provide (online) help. These sites also provide information for people that know someone with an eating disorder.