Does Apple Cider Vinegar Help with Weight Loss? Myths vs. Facts

It’s the ancient home remedy that’s gained a lot of attention over the last few years for its perceived health benefits. But does apple cider vinegar help with weight loss? Truthfully, the research is limited, with no strong evidence to support any significant weight loss benefits. But that’s not to say it can’t support your weight management journey.

Here, our experts review some of the most common myths about apple cider vinegar (ACV) and how it works, and sort the facts from the fiction by revealing what the science says.

Article Summary:

• Apple cider vinegar is a fermented liquid containing acetic acid. It's been used for centuries as a food preservative and medicinal tonic.
• More recently, ACV has gained recognition on social media as wellness communities claim it can help with everything from weight loss to gut health. However, research on this is limited and often conflicting.
• ACV may help to reduce blood sugar, slow digestion and reduce your appetite. But before you add ACV to your diet, you should be aware of the side effects and its interactions with some prescription medications.

What is apple cider vinegar?

Apple cider vinegar, often referred to as ACV, is a type of vinegar that’s made by fermenting apple juice. This requires a two-step fermentation process. First, yeast is added to the juice of pulverized apples, which converts the sugars into alcohol (making cider). Next, bacteria (usually acetobacter) is added to convert the alcohol into acetic acid, which is what gives the vinegar its sharp, sour taste and smell. [1]

It’s said to have been used for centuries in cooking and natural medicine, such as for wound cleaning, insect bites, warts and scurvy, and more commonly it’s a food cupboard staple for creating salad dressings, sauces and marinades. [2]

More recently, it’s gained popularity as a “health shot”, claimed to support overall wellbeing. But while there are countless posts on Instagram and TikTok touting its benefits for gut health, heart health and weight loss, there is limited evidence that it’s the cure-all tonic it’s made out to be.

What is the ‘mother’ in ACV?

You can buy apple cider vinegar in its filtered or unfiltered (raw) form. Unfiltered liquid contains something called the ‘mother’, a cloudy, stringy sediment which forms during the second stage of fermentation.

The mother is primarily made of cellulose, acetic acid bacteria (AAB) and residual proteins, enzymes and trace compounds from fermentation, plus small amounts of yeast. It may be floating in the liquid or settled at the bottom of the bottle. [3]

Many brands claim ACV that contains the mother has extra health benefits. There’s no strong evidence behind this, but the mother being there does mean that the vinegar is both unfiltered and unpasteurized, and that fermentation occurred naturally. This may be important to you if you want a vinegar that’s less processed.

Myth vs. fact: Debunking common weight loss and health claims

We’ve broken down some of the most common beliefs about apple cider vinegar and the science behind them, so you can make an informed decision before adding it to your daily routine.

Myth: ACV "melts" fat cells directly

Fact: No food or drink has been proven to directly help to dissolve or ‘melt’ fat cells. But while ACV may not be able to destroy fat, it could slightly help to suppress appetite and increase feelings of fullness. This can help you to eat fewer calories, creating a calorie deficit so that your body burns more calories than it consumes. [4]

Myth: ACV speeds up your metabolism

Fact: There’s no evidence that apple cider vinegar can speed up your metabolism (known as your metabolic rate, meaning how fast your body burns calories and converts food into energy). [5] If it does have an effect on your weight, it may be related to appetite suppression. One small study on people with type 1 diabetes has shown that it can help to slow gastric emptying, which means it slows down digestion so you feel fuller for longer. [6] However, this has not been proven in those without the condition so more research is needed.

Myth: A daily ACV ‘shot’ can help with significant weight loss

Fact: Where any results of weight loss are seen with apple cider vinegar intake, they’re small. A 2025 report analysing 10 randomized trials found only modest reductions in weight, body mass index (BMI) and waist circumference over a period of 12 weeks. The average amount of weight lost was around 1-2kg. [7]

Myth: ACV works even if your diet stays the same

Fact: When ACV has been tested without a diet or exercise programme alongside it, the weight loss has generally been small. However, the trials that showed clearer benefits involved drinking apple cider vinegar alongside a calorie-restricted diet. In a 12-week randomized trial, those who took 30ml per day of ACV while following a reduced calorie diet lost more weight, and saw greater reductions in BMI and waist circumference than those on the same diet without daily ACV. [4]

Myth: More ACV means more weight loss

Fact: There’s no research to suggest a recommended dose for a healthy, higher vinegar intake. As with anything, moderation is key, and actually having too much could even be bad for your health. Consuming large amounts of apple cider vinegar increases your risk of throat and stomach irritation, reflux and erosion of your tooth enamel. [8] Stick to the recommended dose if you add it to your routine, using it alongside healthy lifestyle changes to help reach your weight loss goals.

Myth: ACV treats diabetes

Fact: Apple cider vinegar is not a treatment for diabetes, which should be managed with medication. This myth comes from a small study on healthy adults which found ACV may help to reduce the rise in blood sugar levels after eating carbohydrates, by helping your body to use insulin more effectively (known as insulin sensitivity).

The trial found that taking vinegar with white bread reduced the rise in blood sugar in the first 30 minutes after eating. The more vinegar they had, the smaller the rise in their blood sugar levels. They also reported feeling fuller for longer when they took vinegar with the meal. [9] However, this does not mean it can be used to treat diabetes.

Interestingly, one review also found that taking apple cider vinegar may help to decrease cardiometabolic syndrome (CMS) risk factors, including fasting blood glucose, total cholesterol and blood sugar, which can lead to cardiovascular disease (CVD). [10]

For this reason, people taking insulin or other diabetes medicines should always speak to a clinician or pharmacist before using ACV regularly, because combining them may increase the risk of low blood sugar.

Myth: ACV can help control your blood pressure

Fact: There’s very limited research on whether apple cider vinegar can help to reduce blood pressure, but it may be able to help with cholesterol. A systematic review and meta-analysis of 9 randomized trials found that ACV significantly reduced total cholesterol levels by about 6mg. However, it was more effective in people with type 2 diabetes and when used for more than 8 weeks. [11]

Side effects of apple cider vinegar

If you do decide to use apple cider vinegar as part of your healthy eating plan, there are some considerations to be aware of.

Tooth enamel erosion

ACV is very acidic, and can erode tooth enamel, especially if it’s taken undiluted or too often. The enamel on your teeth is what protects the dentin (the softer layer containing nerve pathways below), and helps to guard your teeth from decay, damage, sensitivity and infection. [12] If you do take ACV, always dilute it and use a straw to reduce the impact on your teeth.

Digestive issues and acid reflux

You should avoid ACV if you have digestive issues such as stomach ulcers, acid reflux or other digestive conditions, as there is evidence that shows that it may worsen your symptoms. [13] If you have gastroparesis, a disorder that makes it difficult for food to move through your digestive tract, it’s important to know that small studies on people with type 1 diabetes showed apple cider vinegar may slow down gastric emptying. [6]

Low potassium (hypokalemia) and bone density

Drinking too much acetic acid long-term can be dangerous. In one well-documented case, a woman who drank 250ml of ACV daily for 6 years developed low blood potassium (hypokalemia) with muscle cramps and weakness as well as osteoporosis. Doctors believed that the high ACV intake likely caused a metabolic change, making the kidneys get rid of too much potassium. [14]

Medication interactions

Certain medications can be affected by apple cider vinegar, including treatments for diabetes and heart conditions, or anything that helps you manage your blood sugar. Always check with your healthcare provider before using ACV with prescription medicines.

Tips for sustainable weight management

It’s tempting to believe a daily shot of ACV can help you lose weight, but the truth is obesity and weight management are more complicated than that. However, there are ways to lose weight sustainably which have scientific evidence behind them.

Prioritizing a healthy, balanced diet (with or without apple cider vinegar) and increasing your levels of physical activity can help you reach a calorie deficit, and may help you to lose weight. Try walking more or using strength training to add movement into your routine, and do your best to improve your sleep quality because rest is just as important for weight management.

If you need more support, there are also medicated weight loss treatments that can help. First, you’ll need a consultation to check whether you’re eligible, which will be decided based on your body mass index, health history and weight loss goals.

And remember, there’s a lot of noise in the weight loss space, but everyone’s journey is different. The important thing is to find the right route for you.

Find out which treatment is suitable for you with MedExpress.

References

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