In the last few years, apple cider vinegar has been linked to treating and preventing countless ailments ranging from weight loss, chronic fatigue, headache, insect bites, acne, muscle soreness, kidney and stomach issues, digestion, and even cancer. This blog’s primary focus will be on the weight-loss claims surrounding apple cider vinegar on the internet. Before moving into research studies on apple cider vinegar, it is crucial to understand it, its production, and other nutritional information. Let’s start with its history.
History and Nutritional Information
The production and use of vinegar are ancient. The word vinegar comes from the French phrase vin aigre, meaning sour wine. Vinegar has been used to preserve food, for medical purposes, and flavours throughout human history, but the origin of apple cider vinegar is unknown.
ACV is produced by the two-part fermentation of apples. First, apples are fermented into ethanol, mainly by the yeast Saccharomyces cerevisiae, and then, second, fermentation converts this cider into acetic acid. All other kinds of vinegar are produced in the same manner, explained above, but with different carbohydrate sources. ACV is mainly composed of water with 5-6% acetic acid, to which all the health claims are linked. It contains little to no amount of protein, fat, and potassium.
Apple Cider Vinegar and Weight Loss
In the last 1-2 years, apple cider vinegar has gained tremendous popularity because of its association with weight loss. “I lost 10kg in a month with ACV”, “Drink ACV to reduce weight in a week,” “best supplement to reduce fat,” and so on. If you search for apple cider vinegar on YouTube, you will probably see one or all of the abovementioned videos. Apple cider vinegar is not new; we have been using it since ancient times, but we have never used it for weight loss. Based on some animal-based studies and just one or two poorly conducted human studies, people started believing in the benefits of apple cider vinegar for weight loss. Some of these studies are mentioned below-
- A small study conducted in 2018 found that consuming vinegar did help in fat loss, but the weight loss reduction was minimal. This study was conducted on 155 obese people who were untrained and were on a calorie-restricted diet (250-calorie deficit per day). These 155 participants were divided into 2 groups- group one had 15 ml of ACV with lunch and dinner every day, and the other did not have ACV during those 12 weeks of study. Remember, both groups were on a calorie-restricted diet that was a 250-calorie deficit daily. After 12 weeks of study, researchers found that the group that had ACV with meals on average lost 4kg of body weight, and the group that did not drink ACV had a 2.3 kg reduction in their body weight over the 12-week study period.
Whether it is a manufacturing company or a social media influencer trying to sell you apple cider vinegar, it references the above research study. But if you read this study carefully, which most people don’t do, you will see many limitations this study has. They are as follows-
- First, this study was conducted on obese and untrained people, so we can not predict with certainty that ACV will have the same impact on healthy and trained people in terms of body composition.
- Secondly, both groups were given nutritional advice, but there was no control over their food choices. And more importantly, they were self-reporting their food intake, which could be more or less from their actual intake by a significant margin. There is a possibility that the group that had ACV with meals was also consciously making good food choices compared to the other group. So we do not know whether the higher weight loss reduction in the ACV group was actually due to ACV or healthy food choices.
- Last but not least, the difference in weight loss was only 1.7kg between the groups. The ACV group lost only 1.7 kg more than the other group, which did not receive ACV, over 12 weeks. Consider this for a moment: 1.7kg in just 3 months. You can quickly lose this body weight by walking 5 minutes extra each day or drinking a black coffee 3-4 times per week. So why waste money on this useless thing?
2. Another trial conducted in 2009 in Japan tested 175 obese adults who took either one or two tablespoons of vinegar daily for 12 weeks. Even after regular use, participants lost only about 4 pounds (roughly 1.8 kg). Researchers noted small reductions in body fat and triglycerides but concluded that the effect was modest and not significant for long-term fat loss.
The Controversial 2024 Study
In 2024, a new study went viral claiming that drinking apple cider vinegar caused rapid fat loss — around 7 kg (15 lb) in 12 weeks — with no changes to diet or exercise. The participants were mostly young adults between 12 and 25 years old, and the study claimed the results were comparable to prescription weight-loss drugs like Ozempic.
This sounded too good to be true, and it was. The research was later retracted in 2025 after reviewers found multiple data inconsistencies and methodological errors. In short, the extreme results were not reliable. Yet, even after being pulled back, the study continues to circulate online, misleading people into thinking ACV is a miracle solution.
What Recent Meta-Analyses Say
A 2025 meta-analysis published in the journal Nutrients reviewed 10 randomized controlled trials involving around 860 adults. It found that ACV supplementation for 8 to 12 weeks led to statistically significant but small reductions in body weight, BMI, and waist circumference. The average difference was just a few pounds, especially in overweight or diabetic adults, taking around 30 ml per day.
Another review published in 2021 in BMC Complementary Medicine and Therapies also found small benefits in body weight and cholesterol levels, but emphasized that these effects were short-term and inconsistent between studies.
So, when you combine all the data, the conclusion is clear: apple cider vinegar may cause a slight increase in fat loss if you’re already in a calorie deficit, but the difference is small — about one to two kilograms more over three months. There is no strong evidence that ACV leads to meaningful or long-term fat loss.
Satiety and Appetite
Satiety means a feeling of fullness after having a meal. A study published in the European Journal of Clinical Nutrition suggests a reduced food intake after consuming vinegar.
The study was conducted on 12 healthy participants who were given vinegar with acetic acid on three different levels with white bread. Another group was given only white bread. The researchers found that the group with the highest dose of vinegar (28 grams with 6% acetic acid) with bread felt fuller than the group with just 18g of vinegar with bread. However, a study published in the International Journal of Society found that vinegar’s appetite-suppressing effect was mainly because people felt nauseous after consuming the vinegar and not because of anything special in vinegar that suppresses hunger. So it is not clear whether vinegar directly suppresses appetite or not.
Blood Sugar and Cholesterol
Besides weight loss, ACV has been studied for its potential benefits in controlling blood sugar and improving cholesterol levels. A 2025 meta-analysis in the journal Frontiers in Nutrition analyzed seven trials in people with type 2 diabetes. It showed that daily ACV use for 8 to 12 weeks improved fasting blood sugar and HbA1c levels, especially at doses above 10 ml per day.
A smaller 2023 study also found improvements in triglycerides, LDL cholesterol, and HDL cholesterol after 8 weeks of taking 30 ml of ACV daily. These results suggest that ACV may support better glucose and lipid control in diabetics, but the improvements are modest. It should never replace medical treatment.
Side Effects of ACV
Excessive consumption of ACV may lead to the following complications-
- Nausea
- Esophageal pain and difficulty swallowing
- Enamel erosion
- Chemical burns or skin irritation if applied to the skin
- low potassium levels and osteoporosis
In a 2015 study in the clinic and Aesthetic Dermatology journal, researcher Dr. Stephanie Feldstein discussed the case of a 14-year-old girl who suffered from two erosion on her nose. She started applying ACV on her nose to remove unwanted “ugly moles” three days before her mother took her to the doctor. Physical examination revealed nono -inflammatory, poorly defined erosions on the nose. The application of ACV can erode skin and cause significant chemical burns.
In a 1998 study in the journal Nephron (https://bit.ly/2F9YJVc), K. Lhotta discussed the case of a 28-year-old woman who was admitted to the hospital due to muscle cramps and hypokalaemia. She revealed that she has taken 250 ml of cider vinegar for the last 6 years. She was diagnosed with reduced bone mineral density because of the high acid load.
Continuous consumption of a vinegar beverage can result in acidic burns and destruction of the surface of the upper gastrointestinal tract. Therefore, vinegar beverages should be considered as corrosive agents.”
As per examine.com recommendations (https://bit.ly/358dbrT), “ACV, due to its acidic nature, can damage various tissues and tooth enamel. Application to sensitive skin, excessive consumption (especially of undiluted vinegar), and excessive consumption of pickled foods may lead to damaged tissue.”
Do not consume ACV or any other kind of vinegar if you are suffering from kidney disease, as the kidney may not be able to process the extra acid from ACV.
Conclusion
After reviewing all available evidence, it’s clear that apple cider vinegar is not a magic fat-loss supplement. The few human trials that exist show very small, short-term reductions in weight, mostly in overweight individuals who were already dieting. The 2018 study involving 155 obese participants is still the main human trial cited by those promoting ACV, but even there the difference was only 1.7 kg over three months.
A 2009 Japanese study and recent 2025 meta-analyses also found small improvements in body weight and waist size, but not enough to make a noticeable difference. The viral 2024 study that showed huge weight loss results has since been retracted for unreliable data.
If your goal is weight loss, focus on consistent training, proper nutrition, and a calorie deficit rather than depending on apple cider vinegar. It might offer a minor metabolic benefit, but it’s not a substitute for exercise or diet control.
Rerferences
Kondo, T., Kishi, M., Fushimi, T., Ugajin, S., & Kaga, T. (2009). Vinegar intake reduces body weight, body fat mass, and serum triglyceride levels in obese Japanese subjects. Bioscience, Biotechnology, and Biochemistry, 73(8), 1837–1843. https://doi.org/10.1271/bbb.90231
Castagna, A., Ferro, Y., Noto, F. R., Bruno, R., Guimarães, A. A., Pujia, C., Mazza, E., Maurotti, S., Montalcini, T., & Pujia, A. (2025). Effect of apple cider vinegar intake on body composition in humans with type 2 diabetes and/or overweight: A systematic review and meta-analysis of randomized controlled trials. Nutrients, 17(18), 3000. https://doi.org/10.3390/nu17183000
Arjmandfard, D., Behzadi, M., Sohrabi, Z., & Mohammadi Sartang, M. (2025). Effects of apple cider vinegar on glycemic control and insulin sensitivity in patients with type 2 diabetes: A GRADE-assessed systematic review and dose–response meta-analysis of controlled clinical trials. Frontiers in Nutrition, 12, 1528383. https://doi.org/10.3389/fnut.2025.1528383
Abou-Khalil, R., et al. (2024). Apple cider vinegar for weight management in Lebanese adults with overweight and obesity: A randomized controlled trial. BMJ Nutrition, Prevention & Health. [Article retracted 2025]. https://doi.org/10.1136/bmjnph-2023-000823
Hadi, A., et al. (2021). The effects of apple cider vinegar supplementation on anthropometric and cardiometabolic parameters in overweight/obese adults: A systematic review and meta-analysis. BMC Complementary Medicine and Therapies, 21, 367. https://doi.org/10.1186/s12906-021-03470-8
Tran, R., & Tyler, C. (2022). In adults, does apple cider vinegar consumption increase intentional weight loss? Evidence-Based Practice, 25(9), 14. https://doi.org/10.1097/EBP.0000000000001667
Johnston, C. S. (2017). How apple cider vinegar may help with weight loss (review article). Time. https://time.com/4648436/apple-cider-vinegar-weight-loss/
Cleveland Clinic. (2025, May). What Apple Cider Vinegar Can (and Can’t) Do for You. Cleveland Clinic Health Essentials. https://health.clevelandclinic.org/exploring-the-health-benefits-of-apple-cider-vinegar
Verywell Health. (2025, October 6). 8 Potential Risks of Drinking Too Much Apple Cider Vinegar Regularly. Verywell Health. https://www.verywellhealth.com/apple-cider-vinegar-side-effects-11824739
Haslam, O. (2025, September 22). Apple cider vinegar review backs weight-management potential. NutraIngredients. https://www.nutraingredients.com/Article/2025/09/22/apple-cider-vinegar-review-backs-weight-management-potential/
Jeukendrup, A. (2023, August 8). Vinegar for weight loss. MySportScience. https://www.mysportscience.com/post/vinegar-for-weight-loss