Apple Cider Vinegar is known to help control diabetics control their glucose levels. Including 20 grams of apple cider vinegar before meals and before bed can help diabetics with insulin resistance control their postprandial glucose.
Arizona State University conducted a study that found 20 grams of apple cider vinegar, 40 grams of water, and 1 teaspoon of saccharin with each meal helped those with insulin resistance lower their postprandial glucose by 34%. More recent studies have shown that having vinegar at bedtime reduces fasting glucose in the morning. Vinegar increases insulin production.
Some suggested methods of including apple cider vinegar in your meals are by diluting 1 to 2 tablespoons in water or in food as a salad dressing or marinated in meats. Apple cider vinegar is not suitable to be consumed undiluted due to stomach irritation or damage to tooth enamel.
These effects have been seen in diabetics with type 2, but there were different results for type 1 and prediabetics. While apple cider vinegar can help type 2 diabetics produce more insulin after a meal with carbs, for type 1 and prediabetics, it can make things worse and actually accelerate their diabetes.
While a lot of studies have shown the positive effects of apple cider vinegar for diabetics, there have also been studies that show vinegar might be harmful for type 1 and people with kidneys problems or ulcers. If you are using large amounts of apple cider vinegar, your potassium level could potentially drop to dangerous levels.
Apple cider vinegar is a popular home remedy, but it should not be used to replace medication. Ask your doctor for more details.