The second supplement to look out for is vitamin A, commonly known as retinol. Vitamin A supports the normal function of the immune system, improves vision in low light, and maintains healthy skin and mucous membranes in certain parts of the body, such as the nose.
The NHS emphasises that the total vitamin A content of food is usually expressed in micrograms (µg) of retinol equivalents (RE). Adults aged 19 to 64 are advised to have a daily vitamin A requirement of 700 µg for men and 600 µg for women.
Dr. Bing said, “Vitamin A is fat-soluble, which means it is stored in the liver and can accumulate over time.”
“Excess of these substances can lead to a condition called pseudotumor cerebri, which is an increase in pressure in the brain that resembles a brain tumor, causing headaches, blurred vision, and even permanent vision loss.”
Sink
Finally, Dr. Bing mentioned that consuming “too much” zinc can hinder the body’s ability to absorb copper. Zinc supports wound healing, the synthesis of new cells and enzymes, and the digestion of proteins, fats, and carbohydrates.
The doctor revealed: “Multivitamins, lozenges, and even some over-the-counter cold medicines contain it.”
"Zinc is essential for our bodies and is found in many food sources. The problem, however, is that when people take supplements daily for many months, they can easily exceed the safe limit."
Copper is important for the nervous system. Low levels can lead to myelopathy, damage to the spinal cord and peripheral nerves, resulting in numbness, tingling, and difficulty walking.
“I have seen many cases where patients exhibit progressive weakness and sensory impairment due to copper deficiency resulting from long-term overconsumption of zinc.”
