Is Liquid Diet Good For Weight Loss? Types, Menu Plan, Benefits & Side Effects

Everything you need to know about the types of liquid diet to enhance body metabolism.

Medically reviewed by Merlin Annie Raj, RD (Registered Dietitian) Merlin Annie Raj Merlin Annie RajRD (Registered Dietitian) facebook_iconlinkedin_icon
Written by , MSc (Nutrition), CDE Priyanka Sadhukhan MSc (Nutrition), CDE linkedin_icon Experience: 8 years
Edited by , BA (Literature & Psychology), PG Diploma Arshiya Syeda BA (Literature & Psychology), PG Diploma linkedin_icon Experience: 7 years
Fact-checked by , BPharm, Certified Health & Wellness Coach Moksha Gandhi BPharm, Certified Health & Wellness Coach linkedin_icon Experience: 2 years
Last Updated on
✔ Evidence Based

StyleCraze believes in credibility and giving our readers access to authentic and evidence-based content. Our stringent editorial guidelines allow us to only cite from reputed research institutions, academic journals, and medically established studies. If you discover any discrepancy in our content, you may contact us.

A liquid diet involves consuming clear liquids. Bone broth, water, or juices without pulp are the foods that doctors allow.

Going on an unsupervised liquid diet for weight loss is not recommended. However, if your doctor permits, you can use this diet for no more than one day to flush out toxins and kickstart your metabolism. Do not follow it for more than a day as it can be unsafe.

Read on to know everything about various liquid diets, benefits, dangers, and diet charts. Scroll down!

What Is A Liquid Diet?

Woman enjoying a smoothie at a restaruant
Image: Shutterstock

Liquid diets (also called clear liquid diets) are low-calorie foods that are liquid at room temperature (1). This ‘juice cleanse’ diet may boost your hydration levels and help with weight management.

You can either replace one or two meals of your day with liquid foods or go on a total liquid diet. In a liquid diet, you will be consuming calories in liquid form.

protip_icon Fun Fact
Liquid-based diets have a long history. It is said that William the Conqueror, the first Norman king of England, went on a liquid diet around 1087 AD to lose weight.

You can juice fruits and veggies, make smoothies, or have soup. Low-calorie, high-protein meal replacement shakes also help in body transformation. This diet is most often used for weight loss, but how good is it?

How Do Liquid Diets Help In Weight Loss?

Liquid diets are the go-to diets for many dieters. This is because they help save time, improve metabolic rate, detoxify the body, and support the digestive system, resulting in weight loss and better overall health. Listed below are the ways liquid diets could aid weight loss.

1. Low In Calories

Liquid diets are low in calories as they consist of watery-clear fluids. Studies in The American Journal of Clinical Nutrition showed that very-low-calorie diets, including a liquid diet consisting of no more than 500 calories a day, could be effective in reducing weight. This type of diet could work better compared to a low-calorie diet or a restricted normal food diet (2).

When you consume fewer calories, your body will start using up the stored glycogeni  A form of glucose stored in the muscles and the liver and is the primary energy source for the body. or fat as the source of fuel. This, in turn, could lead to slimming and weight loss.

A study published in The International Journal of Obesity showed that a low-calorie diet or very low-calorie diet resulted in muscle glycogen depletion for a short period. Body fat also decreased, resulting in weight loss (3).

2. Detoxify Your Body

Liquid diets are an excellent way to detoxify your body.

The juices/broths/smoothies are rich in vitamins, minerals, and dietary fiber. Rat studies have shown that fruit or vegetable juices are rich in antioxidants and can prevent oxidative damagei  Cell damage caused by unstable oxygen molecules and failure of the body to eliminate these molecules. (4).

The dietary fiber helps cleanse the digestive tract and improves gastrointestinal health (5). Both these actions could have a beneficial impact on weight loss.

3. Nutritious

Woman making a nutritious smoothie at home
Image: Shutterstock

Liquid food in the juice or smoothie form offers rich nutrition. Remember to drink the juice/smoothie immediately if you are using a centrifugal blender.

Replacing your dinner meal with low-calorie liquid foods improves body composition parameters and may also aid weight loss. In a study, the group of subjects who took a liquid meal replacement seemed to have better weight parameters (6).

Maintaining a balanced calorie intake along with a liquid diet throughout the day can help provide the required nutrients to the body. It also improves fitness and general wellness.

4. Easy On The Digestive System

Juices/smoothies/broths are easy on your digestive system. They aid proper digestion, absorption, and excretion. Moreover, the little dietary fiber and water in the liquid diet (by including pulp in juices or smoothies) can keep you full for a long duration. As per one study, a liquid meal replacement was found to have more fiber than a solid meal replacement (7).

5. Convenient

You don’t have to wait for the pan to heat up or scroll through recipes online.

You may simply toss all the ingredients into a blender, and your breakfast/lunch/dinner is ready.

This is a major advantage, more so if we tend to skip a meal or order unhealthy food as cooking could be a time-consuming process. Starving or eating unhealthy could only lead to weight gain in the long run.

These are the many advantages of a liquid diet. The diet is available in different types, and in the following section, we will explore those.

Types Of Liquid Diets For Weight Loss

Woman making a green juice at home
Image: Shutterstock

For beginners, following a liquid diet can be tough. Also, if you are not comfortable going on a complete liquid diet, you have an alternative. Here, we have discussed the different types of liquid diets. Remember to talk to your doctor/dietitian before trying any of these.

1. Detox/Cleansing Liquid Diet

Detox or cleansing liquid diets have gained popularity in the recent past. They may help to detoxify your body, and you may see some results when you go on a detox liquid diet once a week for a month.

In this diet, you will only drink vegetable/fruit juices with herbs for a day. It will not only be a new experience but also can feel refreshing. A few examples of detox/cleansing liquid diets are water fasting and the Master Cleanse.

However, research on detox diets is very limited. We suggest you speak to your doctor about the safety of such diets (8).

2. Meal Replacement Liquid Diet

Meal replacement liquid foods or shakes are low in calories and could be effective in weight loss.

Certain liquid meal replacement products are high in protein and fiber and low in fat. These could be more effective in regulating appetite and curbing hunger pangs. Some research suggests that liquid meal replacement diets could be as satiating as solid meal replacement diets (7).

The shakes or juices that you take in the place of a full breakfast or lunch are usually low in calories. They can also contain all the macronutrients (protein, carbs, and fat) and most micronutrients (vitamins and minerals)

These products are specifically designed to replace solid foods (which may have a higher total calorie count per serving).

3. Medical Liquid Diet

Woman drinking fruit juice before surgery
Image: Shutterstock

This diet is not for weight loss. You need special attention and supervision by a doctor. This liquid diet is prescribed by a doctor to prep a patient for surgery in the near future or help them recover from an injury. This diet could also be prescribed to ease digestion issues.

Medically prescribed liquid diets require the patients to be on a clear liquid diet. They can only drink water, broth, apple juice, popsicle, syrup, and teas.

Takeaway Point: If you are comfortable, you can go on a detox diet for a day. But for weight loss, it is recommended to go on a meal replacement diet. This will ensure that you get the benefits of solid food as well as liquid juices/broths. If weight loss is your goal, you may want to skip the medically prescribed liquid diet and check out other liquid diet meal ideas instead.

protip_icon Trivia
Beyoncé revealed that she lost 20 lbs for her role in ‘Dream Girls’ in 2006 by following a strict liquid diet known as the Master Cleanse.

Liquid Diet – A Menu Plan To Lose Weight

Detox Liquid Diet Chart

Early Morning (6:00 a.m.)1 cup water with the juice of half a lime
Breakfast (7:00 a.m.)Orange, pomegranate, melon seed powder, and a mint smoothie
Mid Morning (10:00 a.m.)Apple juice
Lunch (12:30 p.m.)Cucumber soup + 1 cup chicken broth
Post-lunch (3:30 p.m.)Buttermilk or Herbal tea
Dinner (7:00 p.m.)Blended squash or Mushroom soup

Tip: Drink flavored water to keep your hunger at bay.

We have an alternative liquid diet chart that may suit your needs.

Meal Replacement Liquid Diet Chart

Early Morning (6:00 a.m.)1 cup water with the juice of half a lime
Breakfast (7:00 a.m.)Blueberry, oatmeal, dates, 2 almonds, and milk smoothie/meal replacement low-calorie shake
Mid Morning (10:00 a.m.)1 glass egg nog + 1 cup green tea
Lunch (12:30 p.m.)Mushroom or lentil soup + 1 glass vegetable juice (with pulp)
Post-lunch (3:30 p.m.)Buttermilk with nut powder
Dinner (7:00 p.m.)Vegetable broth with grilled fish/chicken/meal replacement low-calorie shake

Since the diet is low in calories, you may find it hard in the beginning. But it’s just for a day, and you will soon get used to it.

Tip: Do not do vigorous exercises on this day. You may do some light stretching, go for a slow-paced walk, or meditate.

Are you thinking these are the only foods you are allowed to eat? Well, no. In the following section, we have listed out the liquid diet foods you can include in your meal plan.

Foods You Can Eat

  • Fruits and veggies
  • Soy/almond/full-fat milk
  • Yogurt and low-cal frozen yogurt
  • Raw or scrambled eggs
  • Tea/coffee
  • Popsicles
  • Water
  • Cold-pressed juices
  • Honey/syrup
  • Sports drinks
  • Ice cream
  • Flavored water
  • Broth
  • Creamed soup
  • Lean protein like fish, chicken, lentils, beans, tofu, mushroom, and soy
  • Sorbet
  • Herbs

If you are on a detox diet, avoid all types of food in the solid form. You can instead juice them or make a smoothie and consume them. If you want to opt for meal replacements, you can include solid foods (but do ensure you have at least two liquid meals).

Who Should Avoid The Liquid Diet?

Though the liquid diet is good for weight loss, it should be avoided by:

  • Pregnant and lactating women
  • Children
  • Older adults (unless their doctor recommends)

Benefits Of The Liquid Diet

Woman with glowing skin following a liquid diet
Image: Shutterstock
  • It could help in detoxification.
  • If the liquid diet is low in fiber, it can give the digestive system the required rest (9).
  • It improves skin quality.
  • It is helpful for those with a painful wisdom tooth.
  • It may be useful for those with cancer of the mouth, esophagusi  Also known as the food pipe, a thin and muscular tube that carries food from the throat to the stomach. , or gums.
  • It reduces stomach ulceri  Open sores that develop on the lining of the stomach, intestines, or esophagus due to bacterial infection. pain.
  • In some cases, the liquid diet could be useful for people who have undergone surgery of the stomach. It may help them transition to solid foods, though it may not be necessary in majority of the cases (10).

Like any extreme diet, a liquid diet can also turn dangerous if you follow it continuously for days. Take a look at its possible side effects.

Possible Dangers Of The Liquid Diet

Yelena Wheeler, MPH, a registered dietitian, says, “When it comes to weight loss and maintenance, a balanced diet with protein, fiber, and fat is needed to achieve long-term goals. A purely liquid diet often lacks fiber, which is an important component of blood sugar management. Diets which lack fiber often lead to spikes in blood sugar, which, in turn, will cause increased cravings and overeating.”

Here are the dangers of being on a liquid diet continuously for too long:

  • Your immunity will become weak.
  • You will feel light-headed and dizzy.
  • Cravings for food may increase, leading to overeating.
  • It can lead to muscle loss and weaken your bones.
  • It may prevent proper brain functioning.
  • It may lead to mood swings and irrational thoughts.
  • It makes you prone to cough and cold.
  • Causes nausea.

There is little research substantiating these side effects. But as per anecdotal evidence, following the liquid diet for several days could cause any of the above-mentioned side effects.

Liquidized diet is easy to consume and is often recommended to provide nutrition for people with certain health conditions. Check them out in the next section.

Indications For A Full Liquid Diet

General liquid diet indications are as follows:

  • Dysphagia

Liquid diet with a slightly thicker consistency may help with safe and smooth swallowing to avoid choking (11).

  • Postoperative Recovery

It aids in healing by offering easy-to-digest nutrients after surgery (12).

  • Oral Surgery Or Dental Issues

Recommended for patients after dental procedures or oral surgery to avoid chewing solid foods.

  • Acute Pancreatitis

It provides digestive rest and minimizes abdominal pain and pancreatic enzyme secretion during acute phases (13).

  • Irritable Bowel Syndrome (IBS)

It may increase stool frequency and minimize digestive irritation during IBS flare-ups (14).

Infographic: Flavored Water Recipes For Liquid Diet

A liquid diet helps one lose weight, revs up metabolism, and flushes out toxins effectively. However, one may feel it monotonous to drink only water to curb the thirst. Hence, flavored water can be a good choice.

The following infographic lists a few recipes for flavored water. Check them out!

flavoured water recipes for liquid diet (infographic)

Illustration: StyleCraze Design Team

If you were confused about the liquid diet before, we hope the article thoroughly answered your question of “what is a liquid diet?” It involves replacing all or some meals in a day with clear fluids like broths, juices, and soups. A liquid diet for weight loss can work by drastically cutting down the number of calories consumed in a day and detoxifying the digestive system. However, it is not a plan that should be used long-term as it can cause loss of muscle mass and manifest in other side effects and health concerns. Avoid this diet if you are pregnant, lactating, underage, or above 60 years of age (unless prescribed by your doctor).

Frequently Asked Questions

How much weight can you lose on a liquid diet?

In a liquid diet, all forms of solid foods are restricted, and you are encouraged to take more of liquid foods and drinks. You may be able to lose 10-20 pounds in about 10 days.

How much weight can you lose on a 3-day liquid diet?

You may be able to lose 5-10 pounds on a 3-day liquid diet. This loss also depends on your body type and metabolic rate.

Can you eat eggs on a liquid diet?

Yes, you can eat eggs on a liquid diet. You can mix an egg with your smoothie or consume egg nog or a soft poached egg.

What is the best drink for a liquid diet?

A liquid diet is mainly based on liquid foods. Hence, any liquid food or juice with a proper nutrient balance can work well. You can choose fruit or vegetable juice, dal soup, chicken broth, etc.

Does a liquid diet shrink your stomach?

Liquid diet hardly contains any solid substances and is low in calories. This may cause your stomach to shrink.

Does a liquid diet cause diarrhea?

A liquid diet may cause diarrhea only if it is devoid of the important nutrients. If the diet is well balanced and is nutritious, it may not cause diarrhea.

How long should you be on a liquid diet?

It is recommended not to follow a liquid diet for more than 3 days. As you are not allowed to eat solid foods, extending this diet for a longer duration can make you feel lethargic. It may also cause the side effects discussed in the article.

Does a liquid diet reduce belly fat?

While a liquid diet by itself may not always reduce belly fat, the intake of more protein in the diet can help (15).

Are mashed potatoes OK for a liquid diet?

No, a liquid diet does not include mashed potatoes.

Is peanut butter allowed on a liquid diet?

Yes. Nut butter, like peanut butter, can increase your caloric intake and is allowed on a liquid diet.

Can I eat cheese on a liquid diet?

No. Hard and soft cheese should be avoided on a liquid diet.

Can you have applesauce on a clear liquid diet?

Yes. You can have applesauce on a clear liquid diet. However, check with your doctor before consuming it.

Can you have a solid bowel movement on a liquid diet?

If you are on a full liquid diet for a long time, you may become constipated due to a lack of fiber.

What kind of Jell-O can you have on a clear liquid diet?

Plain gelatin (Jell-O) with lime, peach, gelatin, and watermelon flavors can be included in a clear liquid diet.

Key Takeaways

  • Food intake in liquid form or substituting one or two of your daily meals with liquid foods is a liquid diet. However, follow this diet for no more than a day.
  • Smoothies and juices are a good source of dietary fiber, vitamins, minerals and antioxidants that can help tackle oxidative damage.
  • A liquid diet helps promote weight loss and improve health. Alongside this diet, incorporating a balanced calorie intake can provide the essential nutrients required by the body.
  • It helps to save time, boost the metabolic rate, detoxify the body, and support the digestive system.
liquid diet for weight loss

Image: Stable Diffusion/StyleCraze Design Team

Curious about what’s allowed on a full liquid diet? Play this helpful video guide that explains permissible foods, offering valuable insights for those following this dietary restriction.


Articles on StyleCraze are backed by verified information from peer-reviewed and academic research papers, reputed organizations, research institutions, and medical associations to ensure accuracy and relevance. Read our editorial policy to learn more.

  1. Clear Liquid Diet, US National Library of Medicine, National Institutes of Health.
  2. Weight loss and dropout during a commercial weight-loss program including a very-low-calorie diet, a low-calorie diet, or restricted normal food: observational cohort study, The American Journal of Clinical Nutrition, US National Library of Medicine, National Institutes of Health.
  3. Loss of total body potassium during rapid weight loss does not depend on the decrease of potassium concentration in muscles. Different methods to evaluate body composition during a low energy diet, International Journal of Obesity and Related Metabolic Disorders, US National Library of Medicine, National Institutes of Health.
  4. Vegetable and fruit juice enhances antioxidant capacity and regulates antioxidant gene expression in rat liver, brain and colon, Genetics and Molecular Biology, US National Library of Medicine, National Institutes of Health.
  5. Dietary fiber and prebiotics and the gastrointestinal microbiota, Gut Microbes, US National Library of Medicine, National Institutes of Health.
  6. Effects of a Meal Replacement on Body Composition and Metabolic Parameters among Subjects with Overweight or Obesity, Journal of Obesity, US National Library of Medicine, National Institutes of Health.
  7. Effects of Solid versus Liquid Meal-replacement Products of Similar Energy Content on Hunger, Satiety, and Appetite-regulating Hormones in Older Adults, Hormone and Metabolic Research, US National Library of Medicine, National Institutes of Health.
  8. Detox diets for toxin elimination and weight management: a critical review of the evidence, Journal of Human Nutrition and Dietetics, US National Library of Medicine, National Institutes of Health.
  9. Low-Residue and Low-Fiber Diets in Gastrointestinal Disease Management, Advances in Nutrition, An International Review Journal, US National Library of Medicine, National Institutes of Health.
  10. Patient-Controlled Nutrition After Abdominal Surgery: Novel Concept Contrary to Surgical Dogma, Annals of Coloproctology, US National Library of Medicine, National Institutes of Health.
  11. Exploring tools for designing dysphagia-friendly foods: a review, Foods, US National Library of Medicine, National Institutes of Health.
  12. Full Liquid Diet, StatPearls, US National Library of Medicine, National Institutes of Health.
  13. Three initial diets for management of mild acute pancreatitis: A meta-analysis, World Journal of Gastroenterology, US National Library of Medicine, National Institutes of Health.
  14. Diet in irritable bowel syndrome: What to recommend, not what to forbid to patients!, World Journal of Gastroenterology, US National Library of Medicine, National Institutes of Health.
  15. Increased Protein Intake and Meal Frequency Reduces Abdominal Fat During Energy Balance and Energy Deficit, PubMed, ResearchGate
Was this article helpful?
Merlin Annie Raj
Merlin Annie RajRegistered Dietitian Nutritionist
Merlin Annie Raj is a Registered Dietitian based out of Hyderabad, India. She has 14 years of experience in Clinical Nutrition as well as teaching Nutrition and Dietetics to undergraduate and postgraduate students. She was awarded the ‘President’s Award’ at the 47th Annual National Conference of the Indian Dietetic Association, 2014.

Read full bio of Merlin Annie Raj
  • Yelena WheelerMPH, RD Yelena Wheeler, MPH, RDN, has a decade of experience in clinical nutrition, chronic disease management, dialysis, acute care, NICU, bariatrics, diabetes education, public health program development, and food service management. She has worked within many prominent hospital systems in Los Angeles and Central California. She earned her master's degree from California State University, Los Angeles and is currently Clinical Nutrition Manager at Glendale Adventist Medical Center Inc.
    Yelena Wheeler, MPH, RDN, has a decade of experience in clinical nutrition, chronic disease management, dialysis, acute care, NICU, bariatrics, diabetes education, public health program development, and food service management. She has worked within many prominent hospital systems in Los Angeles and Central California. She earned her master's degree from California State University, Los Angeles and is currently Clinical Nutrition Manager at Glendale Adventist Medical Center Inc.
Priyanka Sadhukhan
Priyanka SadhukhanNutritionist, CDE
Priyanka is a nutritionist and a Certified Diabetes Educator. She has over 8 years of experience in nutrition and dietetics with a strong research background. She is passionate about science and how it can be applied to one’s daily lifestyle.

Read full bio of Priyanka Sadhukhan
Arshiya Syeda
Arshiya SyedaSenior Editor
Arshiya Syeda is a senior editor at StyleCraze with 7 years of experience. Prior to that, she was a content writer and combined her writing and research skills to write over 200 high-performing articles on hairstyles, hair care, and skin care.

Read full bio of Arshiya Syeda
Moksha Gandhi
Moksha GandhiHealth & Wellness Writer
Moksha is a health and wellness writer and a certified diet and nutrition coach. Her passion for science and writing has helped her excel in crafting evidence-based articles. Her previous experience in writing science-based research papers ensures that her articles are grounded in research and provide practical tips that are reader-focused.

Read full bio of Moksha Gandhi