Apple cider vinegar has long been used in traditional diets. Today, it is also attracting interest from scientific research.
Some studies suggest that it may influence glucose metabolism, digestion, and satiety.
Pierre Haddad, Dr en pharmacologie, explains that the effects of apple cider vinegar are mainly linked to an active compound: acetic acid.
This molecule may act on several biological mechanisms involved in blood sugar regulation and digestive function.
Acetic acid and blood sugar
Acetic acid is one of the main components of apple cider vinegar. It is responsible for its acidic taste, but also for several studied metabolic effects.
Some research suggests that apple cider vinegar may influence how the body manages glucose after a meal.
Observed effects in some studies
The most consistent results concern post meal blood sugar, especially when meals are rich in carbohydrates.
Apple cider vinegar may:
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Reduce the rise in blood sugar after a carbohydrate rich meal
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Reduce fasting blood sugar as well as glycated hemoglobin
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Slow gastric emptying
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Promote a longer lasting feeling of satiety
These effects may help stabilize energy after meals and avoid rapid fluctuations in blood sugar.
However, Pierre Haddad, Dr en pharmacologie, emphasizes that these effects remain modest and must always be part of a balanced diet.
A possible support for digestion
Apple cider vinegar is also sometimes used to support digestion.
Its acidity may stimulate certain digestive functions, including the production of gastric juices.
In some individuals, this may help:
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Improve digestion of meals
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Reduce the feeling of heaviness after eating
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Support the breakdown of certain foods
However, these effects may vary from one person to another.
A precaution for the stomach
The acidity of apple cider vinegar may also cause digestive irritation in some individuals.
Pierre Haddad, Dr en pharmacologie, therefore recommends using it in moderation.
Some simple precautions may reduce the risk of discomfort:
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Dilute it in water
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Incorporate it into food such as dressings or marinades
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Avoid consuming it pure
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People with acid reflux or sensitive stomachs should be particularly cautious.
Apple cider vinegar is an interesting example of a simple food whose effects are being studied in nutritional research.
Thanks to acetic acid, it may help:
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Modulate post meal blood sugar
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Support digestion
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Promote satiety
According to Pierre Haddad, Dr en pharmacologie, its value lies mainly in its integration into a balanced diet rich in fiber and low in refined sugars. As is often the case in nutrition, overall dietary habits make the greatest difference.
About Pierre Haddad
Pierre S. Haddad holds a Ph.D. in pharmacology from the University of Montreal. For over 40 years, he has conducted scientific research in Quebec and internationally (Austria, United States). His work for more than 25 years has focused on natural health products, traditional medicine, and the mechanisms of action of medicinal plants, particularly in the context of metabolic diseases such as diabetes and obesity. He has received awards and distinctions from the academic and research communities, as well as from associations of practitioners of complementary approaches. He currently serves as interim scientific director at Maison Jacynthe.
REFERENCES
Tehrani SD, Keshani M, Rouhani MH, Moallem SA, Bagherniya M, Sahebkar A. The Effects of Apple Cider Vinegar on Cardiometabolic Risk Factors: A Systematic Review and Meta-analysis of Clinical Trials. Curr Med Chem. 2025;32(11):2257-2274. doi: 10.2174/0929867331666230822102021. PMID: 37608660.
Hadi A, Pourmasoumi M, Najafgholizadeh A, Clark CCT, Esmaillzadeh A. The effect of apple cider vinegar on lipid profiles and glycemic parameters: a systematic review and meta-analysis of randomized clinical trials. BMC Complement Med Ther. 2021 Jun 29;21(1):179. doi: 10.1186/s12906-021-03351-w. PMID: 34187442; PMCID: PMC8243436.
Castagna A, Ferro Y, Noto FR, Bruno R, Aragao Guimaraes A, Pujia C, Mazza E, Maurotti S, Montalcini T, Pujia A. 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. 2025 Sep 19;17(18):3000. doi: 10.3390/nu17183000. PMID: 41010525; PMCID: PMC12472926.
Hlebowicz J, Darwiche G, Björgell O, Almér LO. Effect of apple cider vinegar on delayed gastric emptying in patients with type 1 diabetes mellitus: a pilot study. BMC Gastroenterol. 2007 Dec 20;7:46. doi: 10.1186/1471-230X-7-46. PMID: 18093343; PMCID: PMC2245945.
Pistoia JC, Chandler L. Naturopathic Approach to Functional Dyspepsia: A Case Report. Integr Med (Encinitas). 2021 Oct;20(5):32-36. PMID: 34803538; PMCID: PMC8594970.
