“Apple Cider Vinegar Remedies: Do They Work?”

WHAT IS VINEGAR? It's made when bacteria feed on sugars and alcohol in fruit juices, wine, honey, and similar liquids. The result is an acetic acid solution that may have other nutrients, too. Apple cider vinegar starts with juice made from apples. There doesn't seem to be anything special about its health benefits, compared with other types of vinegar. Perhaps the milder flavor and smell have helped boost its reputation.

LOSE WEIGHT: In one study, overweight people who drank 1 or 2 ounces of vinegar (diluted with other liquid) lost weight at a slightly faster rate. And they lost belly fat. But there's no evidence that lots of vinegar will help you drop lots of pounds, or do it quickly.

LOWER BLOOD SUGAR: Vinegar can help someone with diabetes control the amount of glucose in their blood after a meal as well as their A1c, a measure of "average" blood sugar for the past few months. A couple of teaspoons in water or food at mealtime works best. High blood sugar over time can lead to heart disease, kidney disease, stroke, and blindness.

INSULIN CONTROL: Vinegar can also help keep insulin levels lower after you eat. Your cells need this hormone to take glucose from your blood to use for energy. But too much insulin released too often can make your body less sensitive to it -- a condition called insulin resistance that can lead to type 2 diabetes or make it worse.

FIGHTING GERMS: Apple cider vinegar -- any vinegar, really -- will kill some germs because of the acetic acid in it. It works best in your food -- to clean up bacteria lingering on your salad leaves, for example. It's not very good at disinfecting a cut or wound. And because it's an acid, there's a chance it could chemically burn delicate skin.

DANDRUFF: It's long been suggested -- for different reasons -- as a rinse to tame a flaking scalp. But there's no evidence to confirm that vinegar kills yeast bacteria or fungus, or that it removes shampoo residue or product buildup, or that it makes your scalp more acidic (or why you'd even want that). Stick to products made to treat dandruff, and follow the instructions. If the problem doesn't clear up, see a dermatologist.

LICE: Some people say vinegar is a good way to get rid of these little critters and their eggs. Science says otherwise. Even when tested against other home remedies -- rubbing alcohol, olive oil, mayonnaise, melted butter, petroleum jelly -- vinegar came in last. 

JELLYFISH STING: Yep! Tuck a bottle of vinegar into your beach bag. It stops the work of the special jellyfish cells (nematocysts) that deliver the venom -- the stuff that makes a sting hurt. When you get home, dunk the wound in hot water. That stops the venom itself from working. 

WHITEN TEETH: Vinegar may brighten your teeth, but it also wears away their enamel -- the thin, hard, outer layer of protection. In fact, wait for at least 30 minutes after you eat or drink diluted vinegar to brush your teeth. If your teeth are discolored, look for whitening toothpaste or products approved by the American Dental Association, or talk to your dentist.

HEALTHY GUT: That murky, thicker liquid that collects at the bottom of some vinegars, called the "mother," is made up of the fermenting bacteria and their harmless waste. Most brands warm vinegar to kill the bacteria before packaging, but mother can develop once air hits the product. Some say the mother gives vinegar more health benefits because the live bacteria act as "probiotics," but there's no scientific evidence yet.

HEMORRHOIDS: Is a little apple cider vinegar just the ticket for those painful, itchy bumps on your behind? Doctors say no. Even if it feels good in the short term, it can burn your skin and end up making your symptoms worse. Sitz baths and medication are better choices. See your doctor if you can't soothe the burning.

PROTECT YOUR CELLS: Polyphenols are chemical compounds in fruits, vegetables, wine, coffee, and chocolate. They're antioxidants, which protect your cells from damage linked to cancer and other disease. There's no reason to think the polyphenols in apple cider vinegar can't be just as helpful, but we need more studies to be sure.

BLOOD PRESSURE: Scientists know that vinegar will do wonders for your blood pressure -- if you're a rat. Unfortunately, they're not so sure that the same holds true for humans. It's possible, but there's just no evidence to back it up yet. Keep an eye out for more research. 

CURB YOUR APPETITE: When vinegar was served with white bread for breakfast, people said they were more satisfied afterward. But when vinegar was served with cream of wheat, made from a more complex grain that takes longer to digest, it made less of a difference, and the fuller feeling didn't last very long. Stay tuned on this one.

EAR INFECTION: Though some studies show that diluted vinegar (2%) may help with ear infections, the solution can also irritate swollen skin in the area. It could also damage specialized hairs of the cochlea, a part of the ear that helps you pick up sounds. Don't try it.

MORE IS NOT BETTER: Usually, 1-2 tablespoons a day is plenty to drink. There's little evidence that more can help, and too much can cause stomach problems, wear away your teeth, and lower potassium levels. It can also affect the way some drugs work, including water pills (diuretics), laxatives, and medicines for heart disease and diabetes. Talk to your doctor or pharmacist before you start taking vinegar.

Reviewed by: William Blahd, MD on August 18, 2017, WebMD

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