Apple cider vinegar is a natural tonic. It has several health benefits that are supported by scientific studies in humans. However, people have also raised concerns about its safety and possible side effects.
This article takes a look at apple cider vinegar’s potential side effects and how to consume it safely.
What Is Apple Cider Vinegar?
It is made by combining apples with yeast.The yeast then converts the sugar in the apples into alcohol. Bacteria are then added to the mixture, which ferment the alcohol into acetic acid.
Acetic acid makes up about 5–6% of apple cider vinegar. It is classified as a “weak acid,” but still has fairly strong acidic properties when it is concentrated.In addition to acetic acid, vinegar contains water and trace amounts of other acids, vitamins and minerals.
Which Are The Side Effects Of Apple Cider Vinegar?
Unfortunately, apple cider vinegar has been reported to cause some side effects.This is particularly true in large doses.Although small amounts are generally fine and healthy, taking too much can be harmful and even dangerous.
Delayed Stomach Emptying
In gastroparesis, the nerves in the stomach don’t work properly, so food stays in the stomach too long and is not emptied at a normal rate.
Drinking water with 2 tablespoons (30 ml) of apple cider vinegar significantly increased the amount of time that food stayed in the stomach, compared to drinking plain water.
Digestive Side Effects
Apple cider vinegar may cause unpleasant digestive symptoms in some people.
Human and animal studies have found that apple cider vinegar and acetic acid may decrease appetite and promote feelings of fullness, leading to a natural reduction in calorie intake decrease due to indigestion.
The people who consumed a drink containing 25 grams (0.88 oz) of apple cider vinegar reported less appetite but also significantly greater feelings of nausea, especially when the vinegar was part of an unpleasant-tasting drink.
Erosion Of Tooth Enamel
Acidic foods and beverages have been shown to damage tooth enamel. Soft drinks and fruit juices have been more widely studied, but some research shows the acetic acid in vinegar may also damage tooth enamel.
Low Potassium Levels And Bone Loss
There are no controlled studies on apple cider vinegar’s effects on blood potassium levels and bone health at this time.
However, there is one case report of low blood potassium and bone loss that was attributed to large doses of apple cider vinegar taken over a long period of time. A 28-year-old woman consumed 8 oz (250 ml) of apple cider vinegar diluted in water on a daily basis for six years.She was admitted to the hospital with low potassium levels and other abnormalities in blood chemistry.
Doctors who treated the woman believe the large daily doses of apple cider vinegar led to minerals being leached from her bones to buffer the acidity of her blood.They also noted that high acid levels can reduce the formation of new bone.
Of course, the amount of apple cider vinegar in this case was much more than most people would consume in a single day — plus, she did this every day for many years.
Apple cider vinegar has the potential to cause esophageal (throat) burns.A review of harmful liquids accidentally swallowed by children found acetic acid from vinegar was the most common acid that caused throat burns. Researchers recommended vinegar be considered a “potent caustic substance” and kept in childproof container.
There are no published cases of throat burns from apple cider vinegar itself.
However, one case report found that an apple cider vinegar tablet caused burns after becoming lodged in a woman’s throat. The woman said she experienced pain and difficulty swallowing for six months after the incident.
There have been reports of skin burns occurring in response to treating moles and infections with apple cider vinegar.
Due to its strongly acidic nature, apple cider vinegar may also cause burns when applied to the skin.
A few medications may interact with apple cider vinegar:
- Diabetes medication: People who take insulin or insulin-stimulating medications and vinegar may experience dangerously low blood sugar or potassium levels.
- Digoxin (Lanoxin): This medication lowers your blood potassium levels. Taking it in combination with apple cider vinegar could lower potassium too much.
- Certain diuretic drugs: Some diuretic medications cause the body to excrete potassium. To prevent potassium levels from dropping too low, these drugs shouldn’t be consumed with large amounts of vinegar.
How to Consume It Safely
Most people can safely consume reasonable amounts by following these general guidelines:
- Limit your intake: Start with a smaller amount and gradually work up to a maximum of 2 tablespoons (30 ml) per day, depending on your personal tolerance.
- Minimize your tooth exposure to acetic acid: Try diluting the vinegar in water and drinking it through a straw.
- Rinse your mouth: Rinse with water after taking it. To prevent further enamel damage, wait at least 30 minutes before brushing your teeth.
- Consider avoiding it if you have gastroparesis: Avoid apple cider vinegar or limit the amount to 1 teaspoon (5 ml) in water or salad dressing.
- Be aware of allergies: Allergies to apple cider vinegar are rare, but stop taking it immediately if you experience an allergic reaction.
Apple cider vinegar can provide several health benefits. However, to stay safe and prevent side effects, it’s important to monitor the amount you consume and be careful with how you take it.
While a small amount of vinegar is good, more isn’t better and may even be harmful.
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