OMAD diet has a good or bad effect?

The One Meal A Day (OMAD) diet is an extreme version of time-restricted eating, like intermittent fasting. However, unlike intermittent fasting, which usually allows a four or eight-hour eating window, the OMAD diet has a one-hour eating window. So you fast for the other 23 hours of the day.

Although various forms of intermittent fasting have been shown to be an effective way to shed pounds, the OMAD diet is not recommended by nutritionists and can even be dangerous for people with certain health problems. Here's what you need to know.

It sounds obvious, but getting enough calories is extremely important as too little may compromise the immune system and break down muscle mass as the body resorts to other ways to maintain energy reserves, says Hampton.

It's important to maintain proper hydration when on the OMAD diet. The diet allows water, coffee, or tea consumption throughout the day, but no other beverages, like low-calorie or diet beverages, are allowed.