Taking too much vitamin E can cause toxicity — here's how to recognize symptoms and get treatment
- Signs of
vitamin Etoxicity include nausea, headache, and diarrhea.
- Vitamin E toxicity is usually caused by taking high doses of vitamin E supplements.
- Vitamin E toxicity can be treated by stopping supplements and reducing your dietary intake of vitamin E.
- This article was medically reviewed by Samantha Cassetty, MS, RD,
nutritionand wellness expert with a private practice based in New York City.
Vitamin E is a critical nutrient for the body that can be found in foods like sunflower seeds, nuts, and vegetable oils. It plays an important role in expanding blood vessels to prevent dangerous blood clots.However, vitamin E is a fat-soluble vitamin, which means it can potentially build up to toxic levels within the body. Here is what you need to know about vitamin E toxicity, including symptoms, causes, and treatment options.
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What is vitamin E toxicity?While eating adequate amounts of vitamin E is important to keep your body running smoothly, it is possible to consume too much, resulting in toxicity. According to the National Institutes of
There are many foods that are rich in vitamin E, so most people with a healthy diet consume enough from food alone. However, some people — like those with diseases that may impact their ability to absorb fat like Crohn's or Celiac — may consider supplements.Although it's possible to have too much vitamin E in your diet, toxicity most often occurs due to unnecessary or excessive supplement use.
"If you are taking a vitamin E supplement [and] you don't have a deficiency of vitamin E, high levels can build up in the body and cause toxicity," says Bansari Acharya, RDN, a registered dietitian-nutritionist in Detroit, Michigan.
Signs and symptoms of vitamin E toxicityVitamin E toxicity has two stages of symptoms: mild and severe. According to Acharya, mild symptoms of vitamin E toxicity include:
Recognizing the mild symptoms can help you seek treatment before more serious life-threatening, medical complications occur. According to Acharya, these include:
- Excessive bleeding
- Hemorrhagic stroke
When vitamin E is consistently taken at high doses, severe symptoms can occur within a few days, says Acharya.
Supplements cause vitamin E toxicityBecause it is a fat-soluble vitamin, vitamin E is stored in the liver and fatty tissues for long periods of time. This means that the body has a harder time excreting large amounts of vitamin E, increasing the risk of toxicity, says Acharya.
"Vitamin E supplements would be the biggest cause of toxicity side effects," says Lisa Moskovitz, RD, CEO of NY Nutrition Group, a private nutrition practice in New York City.
Moskovitz strongly recommends speaking with a medical professional before taking any vitamin E supplements, cautioning that they can also interfere with certain medications, such as blood thinners.When it comes to vitamin E supplements, the sentiment is clear: "Without a confirmed deficiency, usually supplementation is not needed, and adequate amounts are usually obtained from the diet, especially in developed countries," says Acharya.
Treatment for vitamin E toxicityIf you notice any sudden or ongoing vitamin E toxicity symptoms such as excessive bleeding or weakness, seek medical help as soon as possible, says Moskovitz. That's because long-term vitamin E toxicity could lead to a hemorrhagic stroke or even death.
When caught early on, reversing vitamin E toxicity is relatively simple if the cause is supplementation."The most common way to treat vitamin E toxicity is by discontinuing the supplement and reducing intake of foods in the diet that are high in vitamin E until blood serum levels are within normal limits again," says Acharya. For adults, a normal range is 5.5 mg/L to 17 mg/L.
If severe symptoms such as stroke have already occurred more serious medical intervention may be needed, like a blood transfusion or surgery to repair damaged blood vessels.
TakeawaysVitamin E can help prevent harmful blood clots, among other health benefits. Adults should consume about 15 mg of vitamin E per day. However, digesting an excessive amount of vitamin E through foods or supplements can lead to vitamin E toxicity. This condition, while rare, can cause nausea, weakness, and even a hemorrhagic stroke, but is often treatable.
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