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Side Effects of Too Much Apple Cider Vinegar

by
author image Dana Severson
Based in Minneapolis, Minn., Dana Severson has been writing marketing materials for small-to-mid-sized businesses since 2005. Prior to this, Severson worked as a manager of business development for a marketing company, developing targeted marketing campaigns for Big G, Betty Crocker and Pillsbury, among others.
Side Effects of Too Much Apple Cider Vinegar
A small glass bottle of apple cider vinegar. Photo Credit fotoedu/iStock/Getty Images

Apple cider vinegar has long been touted as a cure-all for anything from arthritis and asthma to ulcers and urinary tract infections. Most benefits are anecdotal at best, but a little apple cider vinegar now and then shouldn’t hurt. Too much, however, can sometimes cause problems. The acid in apple cider vinegar can pose problems for your throat and teeth, while other components can adversely affect your blood sugar and potassium levels. As with any form of complementary or alternative medicine, talk to your doctor before taking apple cider vinegar to treat a medical condition.

Irritation

According to nutritionist Katherine Zeratsky, throat irritation is the most likely side effect of too much apple cider vinegar, particularly from prolonged use. Apple cider vinegar is fairly acidic, largely due to the acetic acid – its main ingredient. Diluting the vinegar with water can help prevent aggravating the esophageal wall.

Tooth Enamel

Too much apple cider vinegar can erode tooth enamel. The acetic acid can damage the enamel on your teeth, making them more susceptible to tooth decay. Diluting the vinegar before use can help, but it's wise to talk to your dentist before you consume apple cider vinegar.

Blood Sugar

Apple cider vinegar can also have an antiglycemic effect on blood sugar, meaning it can lower glucose levels in the bloodstream. This may benefit the management of type 2 diabetes and insulin resistance, but people with uncontrolled blood sugar levels could find its use problematic. Blood sugar may drop to the point of diabetic hypoglycemia. This could deprive the brain of glucose, leading to seizures and loss of consciousness. If you have type 2 diabetes or insulin resistance, talk to your doctor before taking apple cider vinegar in any amount.

Potassium

People taking certain medication – namely insulin and diuretics – should take care when drinking apple cider vinegar. Zeratsky warns that apple cider vinegar can adversely interact with your prescription and lead to low potassium levels. Low potassium, medically referred to as hypokalemia, can cause constipation, weakness, muscle cramps and even abnormal heart rhythms. The body uses potassium to maintain proper functioning of the nerves and muscles. Without it, problems occur.

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