Brazil Nut: Nutrition, Pros & Cons
Brazil nuts are nutrient-dense seeds native to the Amazon, famously known for being the richest natural dietary source of selenium, an essential mineral supporting thyroid function, immunity, and heart health.
Health conditions
- Good for Immunity [USDA, PubMed]
- Good for Thyroid [USDA, PubMed]
- Good for High Cholesterol [USDA, PubMed]
- Good for Celiac / Gluten Sensitivity [USDA]
- Caution for Kidney Disease [USDA, PubMed]
Pros
- Exceptionally rich in selenium, which acts as a powerful antioxidant and supports optimal thyroid hormone metabolism. [PubMed]
- Provides healthy monounsaturated and polyunsaturated fatty acids that support cardiovascular health by improving lipid profiles. [USDA]
Cons
- Very high selenium content means daily consumption of more than a few nuts can quickly lead to selenium toxicity (selenosis), causing hair loss and nail brittleness. [PubMed]
Key nutrients
- Selenium — A single nut can provide more than 100% of the daily recommended intake, crucial for antioxidant defense and thyroid health.
- Magnesium — Supports muscle function, nerve transmission, and energy production.
- Healthy Fats — Rich in heart-healthy monounsaturated and polyunsaturated fats.