Doctor Warns Popular Supplements May Raise Risk of Heart Attacks and Liver Damage
Millions of people take vitamins and dietary supplements every day believing they are improving their health. However, a leading cardiologist is now warning that some commonly used supplements and additives may carry serious risks when consumed in high amounts or without medical supervision.
Dr. Evan Levine, a cardiologist at Mount Sinai, says certain vitamins, plant extracts, sugar substitutes, and even gel capsules could contribute to heart disease, strokes, and liver failure.
Health experts emphasize that supplements are not always harmless simply because they are sold over the counter. In some cases, excessive intake or long-term use may place stress on the body and increase health complications.
Niacin (Vitamin B3) and Heart Risks
Niacin, also known as Vitamin B3, helps the body convert food into energy and supports skin and nervous system health. It is naturally found in foods such as fish, meat, nuts, legumes, and bananas.
Doctors sometimes prescribe niacin supplements to help manage cholesterol levels, but high doses may become dangerous.
According to recent medical research, excessive niacin intake may increase inflammation in blood vessels and contribute to plaque buildup inside arteries. This can raise the risk of cardiovascular disease, heart attacks, and strokes.
Medical experts warn that taking thousands of milligrams daily without supervision may also damage the liver and lead to hepatitis or liver failure.
Possible symptoms of too much niacin include:
Skin flushing
Dizziness
Dry skin
Hair loss
Liver complications
Fatigue
Green Tea Extract May Harm the Liver
Green tea itself is widely considered healthy due to its antioxidants. However, concentrated green tea extract supplements can be much stronger and may negatively affect liver health in some people.
Doctors say high doses of green tea extract can overwhelm the liver, especially in people who already have medical conditions or who take certain medications.
Severe cases have reportedly led to liver inflammation and, in rare situations, liver transplantation.
People with diabetes, anemia, bleeding disorders, or existing liver problems are advised to speak with healthcare professionals before using concentrated extracts.
Artificial Sweeteners Linked to Blood Clots
Sugar substitutes such as erythritol and xylitol are often used in sugar-free products, keto snacks, gum, and diet foods.
While these sweeteners are approved for use in foods, researchers have raised concerns about their possible impact on cardiovascular health.
Some studies suggest they may increase platelet activity, which could raise the risk of blood clots, strokes, and heart attacks.
Experts recommend moderation, particularly for individuals who already have heart disease or circulation problems.
Gel Capsules and Chemical Exposure
Many vitamins and medications are sold in softgel capsules. Some of these capsules contain chemicals called phthalates, which are used to make plastics flexible.
Researchers believe long-term exposure to high levels of phthalates may contribute to inflammation in blood vessels and increase cardiovascular risks.
Health specialists say the chemicals may also affect cholesterol levels and increase oxidative stress inside the body.
Softgel capsules are commonly found in:
Multivitamins
Pain relievers
Cold medicine
Fish oil supplements
Stool softeners
Doctors advise consumers to avoid unnecessary supplement use and discuss safer alternatives with medical professionals when possible.
Experts Urge Caution With Supplements
Health professionals stress that supplements should not replace a balanced diet or professional medical advice.
Many vitamins and nutrients can already be obtained naturally through healthy foods, and taking large amounts unnecessarily may create unexpected health problems.
Experts recommend:
Reading supplement labels carefully
Avoiding mega doses unless prescribed
Consulting a doctor before combining supplements with medications
Choosing trusted brands with safety testing
While supplements can be beneficial for some people, medical experts say moderation and proper guidance are essential to avoid serious complications.
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