Selenium & Antioxidant Defense

Does selenium support longevity?

Yes. Selenium is vital for antioxidant defense and thyroid health, and both deficiency and excess can increase mortality.

Explanation

Selenium is required for selenoproteins like glutathione peroxidase, which protect against oxidative stress. Deficiency can impair immune function, increase cancer risk, and lead to cardiomyopathy. On the other hand, excessive selenium intake is toxic, creating a U-shaped curve for optimal health.

Epidemiological studies link adequate selenium intake with reduced cancer incidence and lower cardiovascular mortality. Selenium also supports thyroid hormone metabolism, a critical factor for healthy energy balance and aging. Brazil nuts, seafood, and meats are the richest dietary sources.

Practical Emphasis: Include selenium-rich foods in your diet but avoid excessive supplementation. Just a few Brazil nuts per week may be sufficient for most people.

Takeaway (Action Tip)

Maintain selenium intake in the optimal range for antioxidant protection and thyroid health.

Reference

Lancet, 2012 – Selenium and human health

How Memorial Longevity Clinic Can Help

We evaluate selenium status through advanced lab testing and provide nutrition counseling for balanced antioxidant defense and thyroid support.

Disclaimer

The information provided on this page is for educational and informational purposes only and is not intended as medical advice. This content should not replace professional medical consultation, diagnosis, or treatment. Always seek the guidance of your physician or other qualified healthcare provider before making any changes to your health, lifestyle, or treatment plan.

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