Neurologist Warns Excessive Use of Supplements Can Harm Brain

A neurologist has issued a stark warning about the potential dangers of popular dietary supplements, stating that excessive use could be detrimental to brain health. Doctor Baibing Chen, widely known as Dr. Bing, highlighted that many individuals take these supplements to compensate for nutritional deficiencies, but misuse can lead to serious health issues.

While supplements can help ensure adequate vitamin and mineral intake, Dr. Chen identified three specific substances that pose risks when consumed in excess. His warnings, communicated via the social media platform TikTok, emphasize the importance of adhering to recommended dosages.

Risks Associated with Zinc Overconsumption

Dr. Chen pointed out that zinc is a common ingredient in multivitamins, lozenges, and over-the-counter cold remedies. While zinc is essential for immune function, he cautioned that long-term use could lead to excessive intake. “Zinc is vital for our bodies, but when taken daily for months, it can easily surpass the safe limit,” he explained.

According to Dr. Chen, too much zinc can interfere with copper absorption, leading to low copper levels. This deficiency can result in myeloneuropathy, a condition that damages the spinal cord and peripheral nerves. Symptoms include numbness, tingling, and difficulty walking. The NHS supports this warning, stating that high doses of zinc can reduce the body’s ability to absorb copper, potentially causing anemia and weakening bones. The Department of Health and Social Care recommends that adults should not exceed 25 mg of zinc supplements per day unless advised by a healthcare professional.

Vitamin A and Vitamin D: Exercise Caution

Dr. Chen also addressed the risks linked to excessive intake of vitamin A, a crucial nutrient for immune health, vision, and skin condition. He noted that vitamin A is fat-soluble, meaning it accumulates in the liver. Overconsumption can lead to a condition known as pseudotumor cerebri, characterized by increased pressure in the brain. Symptoms include severe headaches, blurred vision, and in extreme cases, permanent vision loss. The NHS advises that pregnant women should avoid vitamin A supplements unless specifically recommended by their doctor, while safe consumption through food and supplements should not exceed an average of 1.5 mg daily.

Vitamin D, essential for maintaining healthy bones and muscles, is primarily obtained through sunlight exposure. The UK government suggests a daily vitamin D supplement during the autumn and winter months. However, Dr. Chen warns against high doses, stating that excessive vitamin D can lead to hypercalcemia, where calcium levels in the blood become too high. Symptoms may include confusion, fatigue, and depression, and in severe cases, psychosis. The NHS recommends a daily intake of 10 micrograms of vitamin D for most individuals, with a maximum limit of 100 micrograms (4,000 IU) to avoid harmful effects.

Dr. Chen concluded that while vitamins and minerals are vital for overall health, moderation is crucial. “Like almost everything else in life, more is not always better,” he cautioned. The rising consumption of dietary supplements necessitates awareness and caution to ensure they serve their intended purpose without posing risks to health.