Diet plans that involve a drastic reduction in calorie intake

Diet plans that involve a drastic reduction in calorie intake

such as the recommended 1,500 calories per day on the coffee diet — often result in weight regain due to a number of changes that your body goes through when you restrict calories (18Trusted Source).

Your body adapts to the number of calories you habitually consume. Thus, when you decrease your calorie intake significantly, your body adapts by slowing your metabolism, reducing the number of calories you burn (18Trusted Source).

In addition, hormonal changes that occur as a result of calorie restriction may increase your appetite (18Trusted Source, 19Trusted Source).

Leptin is a hormone that promotes feelings of fullness and sends signals to your brain to stop eating. However, leptin levels in your body can decrease significantly on low-calorie diets, potentially leading to greater hunger and food cravings (20Trusted Source, 21Trusted Source, 22Trusted Source).

For these reasons, it’s very difficult to lose weight on diets that require you to significantly reduce your calorie intake, such as the coffee diet. The end result is often weight regain.

According to some research, about 80% of people who lose weight on a low-calorie diet regain some weight in their first month off the diet. Nearly 100% of people regain all of their lost weight within 5 years of ending their diet (23Trusted Source, 24Trusted Source).

Not safe long-term
According to testimonials, people typically follow the coffee diet for two to seven weeks.

In fact, it may be unsafe over the long term for several reasons.

Drinking large amounts of caffeinated coffee could lead to excessive caffeine intake, which may cause several problems, including insomnia and depression (14Trusted Source).

The coffee diet is also a low-calorie diet, which can make it hard to lose weight and successfully keep it off (18Trusted Source).

Unfortunately, no long-term studies have assessed the safety or effectiveness of the coffee diet.

For these reasons, you should not follow the coffee diet over the long term.

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