Brazil nuts, tuna, eggs: the best dietary sources of selenium
The most reliable way to maintain healthy selenium levels is through diet. Brazil nuts are among the richest natural sources available — a single nut can contain a significant portion of the daily recommended intake. Fish such as tuna and sardines are also strong sources, making them a practical option for regular consumption.
Other accessible foods that contribute to selenium intake include eggs, sunflower seeds, and whole grains. For those who eat them, organ meats such as liver provide particularly high concentrations of the mineral.
A varied diet that regularly incorporates several of these foods is generally sufficient to maintain adequate selenium levels for most adults, without the need for supplementation.
Supplements: a useful option with real risks if misused
For individuals who do not get enough selenium through food alone, supplements can be an effective solution. However, selenium is one of the minerals where the margin between a beneficial dose and a harmful one is notably narrow.
Consuming too much selenium — whether through supplements or a combination of supplements and selenium-rich foods — can lead to serious side effects. These include stomach problems, hair loss, and in more severe cases, nerve damage.
Consulting a healthcare provider before starting any selenium supplement is strongly recommended. A medical professional can assess whether a deficiency is actually present and determine the appropriate dosage, ensuring the supplement supports skin health without creating new health risks.
