Selenium is a crucial micronutrient that plays a role in testosterone synthesis. Our team of licensed nutritionists and dietitians strive to be objective, unbiased, honest and to present both sides of the argument. Try to limit yourself to one to three Brazil nuts per day to be safe. In severe cases, selenium toxicity may cause kidney failure, heart failure, acute respiratory distress syndrome, and even death (28). Plus, 11% of men in the study were able to get their partners pregnant (10). We create supplements that work by using ingredients backed by peer-reviewed research. Cashew butter is another excellent option due to its impressive zinc content. So, we can't be sure if Brazil nuts have the same effect until further research. So, what nuts should you try, and which ones should you avoid? Combine nuts with other hormone-friendly foods. Low-fat diets crush testosterone. But they’re also high in polyunsaturated fats (PUFAs), which may suppress testosterone if overconsumed. Even if testosterone isn’t your main concern, making Brazil nuts a part of your daily diet has been shown to promote a variety of benefits. Research shows that misuse of alcohol and drugs can affect sex hormone levels, including reducing testosterone. Many factors can affect testosterone levels, including older age and nutrient deficiencies. Perhaps you’re hoping to lower your testosterone levels naturally, or perhaps you’re looking to support or boost your testosterone. Some nuts favorably affect testosterone levels, others can decrease the levels of the male hormone. However, when it comes to hormone levels, and especially the production of testosterone and dihydrotestosterone (DHT), most nuts are not as good as one could imagine. Whether nuts increase or decrease (or make no difference) on your testosterone levels, is obviously dependent on the type of nuts you consume. But they contain a lot of zinc, which may boost testosterone production. According to a study conducted at the University of Worcester Polyunsaturated fatty acids (PUFAs), for example, may hinder testosterone production . Boosting testosterone isn’t just about numbers—it’s about how you feel and perform. In 60 days, his T-levels rose by 38%, and his morning erections returned—along with confidence. Read more in this guide on hormonal sabotage by diet. Want to know how nutrition impacts your testosterone and sexual stamina? They’re not a primary T-booster, but they’re great for overall sexual performance. Better circulation supports stronger erections and nutrient delivery to the testes. Walnuts are often praised for male fertility, especially sperm morphology and count. Unlike other nuts, macadamias are low in omega-6, which in excess can trigger inflammation and lower T. Selenium is crucial for sperm motility, testicular function, and testosterone synthesis. But not all nuts are created equal.
