Brazil nuts are a nutrient-rich superfood packed with selenium, an essential mineral that supports overall health. Just a few nuts can improve thyroid function, regulate fasting glucose, and enhance lipid profiles. Their powerful antioxidants help decrease oxidative stress and DNA damage, while also reducing inflammation in the body. Regular consumption may boost verbal fluency and cognitive function. With their impressive nutrient profile, Brazil nuts contribute to better immunity, heart health, and metabolic balance. However, due to their high selenium content, moderation is key—just one to two nuts a day can deliver remarkable benefits.