Why don't doctors recommend taking selenium supplements?

Under normal circumstances, doctors may not recommend taking selenium supplements due to sufficient selenium levels in the body, individual differences, drug interactions, the non-essential nature of selenium supplements, or impaired kidney function. If discomfort occurs, timely medical consultation is advised. Detailed explanations are as follows:

1. Sufficient Selenium Levels in the Body

The human body has a limited requirement for selenium, and excessive intake may lead to selenium toxicity. When dietary sources already provide adequate selenium, additional selenium supplementation may raise selenium levels beyond the safe range. If necessary, selenium needs can be met through dietary adjustments.

2. Individual Differences

Selenium requirements and metabolic capacities vary among individuals. Blindly supplementing with selenium may cause adverse reactions. Blood tests can be performed to assess selenium levels, allowing intake to be adjusted according to individual needs and avoiding unnecessary supplementation.

3. Drug Interactions

Certain medications may interact with selenium, affecting its absorption and metabolism, potentially reducing efficacy or increasing toxicity. It is recommended to adjust medication regimens under medical supervision to avoid interactions between selenium and other drugs. In some cases, discontinuation or substitution of the relevant drugs may be necessary.

4. Non-Essential Nature of Selenium Supplements

For most diseases, standard drug treatments are effective, making it unnecessary to recommend additional supplements. Although selenium is beneficial to health, not all conditions require selenium supplementation for treatment. Therefore, unless there is a clear indication of selenium deficiency, doctors generally do not recommend selenium supplements during clinical evaluation and management.

5. Impaired Kidney Function

The kidneys are the primary organs responsible for selenium excretion. In cases of kidney dysfunction, selenium clearance is reduced, which may lead to selenium accumulation and increase the risk of selenium toxicity. Patients may also experience symptoms such as edema and reduced urine output. Selenium intake should be restricted, and kidney function and selenium levels should be monitored regularly. Dialysis may be required when necessary.

Regarding selenium supplementation, it is important to follow medical advice and maintain a scientific and balanced intake of selenium for optimal health.