Can You Lose Weight if You Eat Only Fruits and Vegetables for a Week?
Diet & NutritionDiet Types

Can You Lose Weight by Eating Only Fruits and Vegetables?

Can You Lose Weight by Eating Only Fruits and Vegetables?
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Updated on February 25, 2026
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Note: Experts consider this eating plan a fad diet. Fad diets often promote quick weight loss and severely restrict what you eat. They generally do not have long-lasting health benefits and may be harmful. Talk to your healthcare provider before making any major changes to how you eat.

Eating only fruits and vegetables may sound like a promising way to drop pounds quickly. But that weight loss isn’t sustainable. Plus, highly restricted diets come with significant downsides. Produce may be low in calories and rich in health-boosting antioxidants and fiber, but your body likely won't get the healthy fats or protein it needs to function properly.

Learn whether eating only fruits and vegetables for a week or longer can help you lose weight in a significant way, and the potential risks of following a restrictive diet plan.

How Does Eating Only Fruits and Vegetables Work for Weight Loss?

Whether you eat all fruits and vegetables or nothing but doughnuts, losing weight comes down to calories, which you can track on a calorie counter. You must eat fewer of them than you burn for your body to use stored fat for energy.

Because fresh produce is generally lower in calories than foods like meat, grains, or dairy, it can make staying within a calorie deficit easier. A low-calorie diet usually allows 1,000 to 1,200 calories a day for women and 1,200 to 1,600 for men. But you may not even hit that target if you eat only fruits and veggies. A cup of raw carrots contains only 53 calories, for example.

Very low calorie diets may have as few as 800 calories a day — and could produce a 3 to 5 pound (lb) weight loss in a week for some — but most experts don’t advise that adults follow this style of eating for more than 12 weeks.

What Can You Eat on the Fruits and Vegetables Diet?

The name is self-explanatory, but the variety of produce you can choose from is impressive.

Foods to Include

Fruits

Vegetables

Certain oils, like olive and avocado, can also be a part of a fruit-and-vegetable-only eating plan, which will add healthy fats to your diet. You can use them to sauté veggies or as a dressing for salads.

Foods to Avoid

Potential Benefits of Eating Only Fruits and Vegetables

Eating a low-calorie diet is effective, at least in the short term, for weight loss. One study of obese people found that low-calorie restricted diets significantly reduced body weight before weight loss surgery.

But people who dramatically decrease their daily calories will also experience a shift in their metabolism. Their bodies will start to burn calories more slowly, which makes it easier to regain weight once they return to their regular diet.

Research also shows that diets rich in fruits and vegetables are associated with a variety of health benefits, including a lower risk of heart disease, cancer, and type 2 diabetes.

 But to get those benefits you can’t just eat fruits and vegetables. Even vegetarians and vegans eat grains and nuts to get vital nutrients.

Potential Risks of Eating Only Fruits and Vegetables

Limiting your food choices to only produce can have a negative impact on your nutrient intake, metabolism, and overall health.

  • Nutrient Deficiencies Fruits and vegetables are chock-full of a variety of vitamins and minerals, but animal products and meat contain certain B vitamins, vitamin D, and a type of iron (heme iron) that is better absorbed and that you won't get from plants, which contain non-heme iron.

     It also may be hard to get adequate protein and healthy fats.
  • Potential for Disordered Eating Research shows that restrictive eating habits can contribute to unhealthy relationships with food such as disordered eating, binge eating, and purging.

  • Lack of Scientific Evidence A diet that consists only of fruits and vegetables, which may be called fruitarianism or raw foodism, is not a balanced eating plan and isn’t backed by robust, peer-reviewed scientific research.

Is Eating Only Fruits and Vegetables Right for You?

While eating a bounty of fruits and vegetables is a great idea, restricting your diet to just those foods is not. Produce doesn’t contain all the essential nutrients your body needs to function.

If you’d like to incorporate more fruits and vegetables into a balanced diet, consider following proven eating strategies that help people lose weight and keep it off. The Mediterranean diet, for example, is a produce-forward eating style that may lead to weight loss and is based on fruits, vegetables, nuts, fish, and poultry.

 One study found that people who closely followed the Mediterranean diet were also roughly twice as likely to maintain their weight loss.

The Takeaway

  • Fruits and vegetables are low in calories, which supports weight loss. But a low-calorie diet based on only eating fruits and vegetables may slow metabolism and increase the risk of regaining weight later.
  • A diet of only produce is nutritionally incomplete, as it lacks adequate protein, healthy fats, and key nutrients essential for your body to function.
  • Diets rich in fruits and vegetables are linked to better health outcomes, but limiting your food intake to only those foods carries health risks.
EDITORIAL SOURCES
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Resources
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