Health experts warn of the dangers of excessive consumption of dietary supplements, stressing that the common belief that "more means more benefit" may be misleading and could even lead to negative health effects.
Vitamin D, magnesium, vitamin B12, and calcium are among the most commonly used supplements, due to their role in supporting immunity, improving nerve function, enhancing sleep quality, and increasing energy.
Despite these benefits, doctors who spoke to the Daily Mail warn that exceeding the recommended doses of vitamins and minerals may lead to their accumulation in the body and cause multiple health disorders.
Experts explain that excessive intake of certain vitamins can lead to adverse symptoms, most notably persistent fatigue, weakness, and mental confusion, symptoms that some may mistakenly believe are related to vitamin deficiencies rather than excesses.
Vitamin D stands out in particular, as an excess of it leads to a high level of calcium in the blood, a condition known as hypercalcemia, which can cause dehydration, impaired kidney function, fatigue, and mental confusion.
Doctors point out that the body makes an effort to get rid of excess vitamins, which consumes its energy and leads to feelings of fatigue, despite the belief that they are "energy vitamins".
Excessive intake of certain supplements, such as magnesium and vitamin D, is associated with gastrointestinal disturbances including bloating, diarrhea, and gas.
The body cannot absorb more than 2000 mg of vitamin C, while high doses of magnesium may exceed absorption capacity, resulting in excess remaining in the intestines.
condition causes what is known as the osmotic effect, where excess water is drawn into the intestines, leading to diarrhea. Vitamin C can also cause heartburn, cramps, and nausea due to its high acidity.
Experts indicate that frequent headaches or dizziness may be signs of excessive intake of certain vitamins.
For example, high doses of vitamin E may affect vitamin K, which is responsible for blood clotting, causing circulatory problems that may manifest as headaches or dizziness. Similarly, excess iron can lead to its accumulation in the brain, which is linked to migraines.
Doctors also warn against vitamin B6, as taking it in high doses and for long periods may lead to damage to peripheral sensory nerves, causing numbness or pain in the hands and feet, which may not go away completely even after stopping its use
Excessive intake of certain supplements, particularly vitamin D and calcium, may affect heart rhythm due to disturbances in blood calcium levels and their effect on the heart's regulating electrical signals.
Electrolyte imbalances, especially with energy drinks, can increase heart rhythm disturbances, while high magnesium levels can slow electrical conduction in the heart in rare cases of extreme excess.
Changes in skin color are among the signs that may indicate an excess of certain supplements, such as beta-carotene, which may cause an orange-yellowish discoloration of the skin, especially in the palms of the hands and soles of the feet, while the whites of the eyes remain normal, which helps to distinguish it from jaundice.
Although this condition is not serious, it disappears when the dose is reduced. However, excessive vitamin A intake can cause dry, flaky skin and hair loss.
Yellowing of the skin and whites of the eyes is a serious sign that may indicate liver problems and requires immediate medical attention.
Some vitamins may affect sleep quality, as B vitamins, especially when taken in the evening, can stimulate the nervous system and lead to insomnia.
Vitamin B12 may also reduce melatonin secretion, increasing alertness and making it harder to fall asleep, while vitamin B6 promotes brain activity during deep sleep, which may cause sleep disturbances.
Conversely, high doses of vitamin C may act as a mild stimulant, increasing the likelihood of insomnia in some people.
