Does a diet with adequate selenium prevent cognitive decline?

Understanding the relationship between certain nutrients, and cognitive functions is important for dieticians and nutritionists. This article will explore selenium and its role in cognitive decline. You will learn about the benefits of selenium and how it may influence your cognitive function. Practical tips on how to include selenium rich foods in your diet are also included.

Selenium is important in preventing cognitive decline

Selenium, an essential trace element, is crucial for many bodily functions including cognition. In recent years, the question has been raised as to whether a selenium-rich diet could prevent cognitive decline. A study in the Journal of Alzheimer's Disease suggests that there's growing evidence to suggest a link between low levels of selenium and cognitive decline.

Selenium is an antioxidant that protects brain cells against oxidative stress, a condition often linked to cognitive decline and aging. Selenium also regulates thyroid hormones that are essential for brain health. Selenium can contribute to brain health but excessive consumption could cause side effects such as gastrointestinal problems, hair loss and fatigue. A balanced approach to selenium is important.

Start Here: Incorporating Selenium into Your Diet

Focus on adding foods rich in selenium to your diet. This includes seafood, meat and poultry, as well as eggs and some nuts and seeds. The selenium levels in foods may vary depending on where the food was grown. Aim for 55 micrograms of selenium per day, the RDA for adults.

Remember, however, that diet plays a major role in preserving cognitive health. It's not the only factor. It is also important to maintain a healthy lifestyle, including regular physical activity, enough sleep and mental stimulation.

Selenium rich foods for cognitive health

Other Tips

Balance is the key to a healthy selenium diet. A diverse diet that is rich in nutrients can have a significant impact on overall cognition. Consider pairing foods rich in selenium with those high in vitamin C and E, as this can increase the antioxidant effects of selenium. Do not take selenium without first consulting your healthcare provider. Selenium can be toxic if taken in excess.


A diet high in selenium may help to prevent cognitive decline because of its antioxidant properties, and also due to the role it plays in regulating thyroid hormonal levels. Selenium-rich food can help you achieve this. It is important to keep in mind that maintaining good cognitive health also requires a healthy diet, physical exercise, enough sleep and mental stimulation.