Some studies show that apple cider vinegar may trigger genes that break down fats, reports WebMD, and this can contribute to weight loss. However, the effects are minimal and subtle, which means exercise and diet are still essential to significant, long-term weight loss and management.
A 2014 Women's Health Magazine article indicated that little proof exists of direct weight loss resulting from consuming apple cider vinegar. It does seem to cause people to feel more full, which contributes to a person eating smaller portions. Plus, even though it may not directly lead to weight loss, some people use it on salads and other healthy meals that may contribute to weight loss.
WebMD points out that while apple cider vinegar doesn't hold much promise for weight loss, it does help diabetics with controlling blood sugar in a way that is similar to some prescription medications. Scientists say this is because it blocks some of the digestion of starch that ordinarily raises blood sugar.