4 Popular Supplements You Didn’t Know Could Be Toxic

Written by bieed

Dietary supplements may be part of your daily routine if you strive for maximum health. While the FDA claims that certain supplements can be beneficial to your health, many popularly offered supplements require more research before they can be regarded entirely safe. The FDA says that “many supplements contain active chemicals that have powerful biological effects in the body.” “In some cases, this might put them in danger, and it could harm or complicate your health.”

The key, they say, is to see your doctor before adding any new supplements to your routine, as well as to understand which supplements are most likely to induce an allergic reaction. Learn why four common supplements might cause hazardous reactions, as well as what symptoms to look for if you’re taking them.

Vitamin D

When your skin is exposed to ultraviolet B (UV-B) light from the sun, your body creates vitamin D. Vitamin D can also be obtained from supplements and certain foods, such as salmon, swordfish, fortified milk, fortified cereal, and yogurt, according to The Cleveland Clinic. When created in enough amounts, vitamin D helps the body absorb calcium, strengthening and protecting the bones from disorders like osteoporosis while also boosting immunity.

However, other scientists believe that large amounts of this vitamin can be harmful to the body. The Mayo Clinic says that “high doses of vitamin D supplements—not food or sun exposure—usually induce vitamin D toxicity.””This is because the quantity of vitamin D produced by sun exposure is regulated by your body, and even fortified foods don’t contain substantial amounts of vitamin D.”

According to the Mayo Clinic, excessive vitamin D supplementation can cause hypercalcemia, a condition that causes “nausea and vomiting, weakness, and frequent urination.” “Vitamin D intoxication can lead to bone discomfort and kidney issues, including calcium stone formation,” they write.


Iron supplements are typically taken to prevent iron deficiency or anemia, a condition in which the body does not create enough red blood cells. Most people can get enough iron from their diets to avoid this problem, but those who have blood disorders, digestive issues, or a few other medical diseases may benefit from iron supplements.
However, Mount Sinai specialists warn that ingesting too much iron can lead to an iron overload. This can impact the airways and lungs, the stomach and intestines, the heart and blood, the skin, and the central nervous system, among other bodily regions. “If the person’s symptoms are gone 48 hours after the iron overdose, there is a strong likelihood of recovery,” the Mount Sinai site states. “However, two to five days following an overdose, significant liver damage might develop. After an iron overdose, some people have died for up to a week. The sooner a person receives care, the higher his or her chances of survival.”


Calcium is important for the healthy function of your muscles and nerves, particularly those in your heart. Women under the age of 50 and males under the age of 70 should consume 1,000 mg of calcium every day, according to the Cleveland Clinic. They recommend that both men and women aim for 1,200 mg each day after those birthdays.
However, taking too much calcium in the form of supplements might be dangerous. Experts at the Mayo Clinic warn that persons who consume excessive amounts of calcium on a daily basis risk developing hypercalcemia, a condition in which calcium builds up in the bloodstream. Kidney stones, kidney failure, constipation, cognitive issues, and potentially catastrophic heart function concerns can all result from this.
While a well-balanced, calcium-rich diet is recommended, studies have shown that calcium supplementation might promote hazardous plaque development in the aorta of the heart. A study published in the Journal of the American Heart Association in 2016 found that “Over the long run, high total calcium consumption was linked to a lower risk of incident atherosclerosis [plaque formation], especially when accomplished without supplementation. Calcium supplementation, on the other hand, may raise the chance of incident [coronary artery calcification] “a disease that has been linked to heart attacks.

Vitamin A

Vitamin A is necessary for maintaining healthy vision, immunity, and regular organ function. That’s not all, though. “Vitamin A also stimulates the production and activity of white blood cells, participates in bone remodeling, aids in the maintenance of healthy endothelial cells (those that line the body’s interior surfaces), and regulates cell growth and division, including that required for reproduction,” according to Harvard Health Publishing.
When vitamin A supplements are combined with vitamin A-rich foods, the double dose can be hazardous. According to Harvard scientists, “Vitamin A toxicity may be more widespread in the United States than deficiency, due to high dosages of preformed vitamin A (retinol) found in some supplements.”
According to specialists, this can have major health effects. According to Very Well Health, “Vitamin A toxicity typically affects the skin, producing reddening, irritation, and uneven peeling.” “Chronic, excessive supplement use may lead to more severe symptoms,” they suggest. Intracranial hypertension causes pressure fluctuations in the skull, vision problems, nausea, dizziness, migraines, bone pain, coma, and even death.

Before starting any new dietary supplement regimen, consult your doctor to avoid side effects.

About the author


Leave a Comment