What are the downsides of taking apple cider vinegar?

The Hidden Risks of Apple Cider Vinegar

Apple cider vinegar has earned a reputation as a natural remedy for everything from weight loss to blood sugar control. But while many swear by its benefits, it’s important to remember that it’s not without risks—especially when used improperly or in excess.

One of the most common issues is its effect on digestion. Consuming undiluted apple cider vinegar can lead to delayed stomach emptying, making you feel bloated or nauseous. Some people also experience heartburn, indigestion, or other digestive discomfort, particularly when taking it on an empty stomach.

Perhaps more concerning is its impact on long-term health. Regular, high-dose use has been linked to low potassium levels and even bone loss, due to its acid content altering mineral balance in the body. This makes it risky for those with osteoporosis or related conditions.

Your teeth are also at risk. The acidity of apple cider vinegar can erode tooth enamel over time, especially if it’s consumed frequently or without dilution. Sipping it straight? That’s a recipe for dental damage. Even worse, there have been rare cases of throat and skin burns—especially when it’s used topically or in excessive amounts.

Then there’s the issue of drug interactions. Apple cider vinegar can interfere with medications like insulin, diuretics, and heartburn drugs, potentially altering their effectiveness or increasing side effects.

The bottom line? While a small amount mixed in water or used in cooking is likely safe for most, treating apple cider vinegar as a daily health tonic without caution can backfire. Moderation and dilution are key. As with any supplement, it’s wise to talk to your doctor—especially if you're on medication or have underlying health concerns.