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Raw brazil nuts deliver more selenium per serving than any other whole food on Earth. Nut Cravings sources ours wild-harvested from the Bolivian Amazon, where selenium-rich soil produces consistently potent kernels. Each whole, unsalted kernel comes shelled, skin removed, and free of PPO fumigation. One nut covers your full daily selenium requirement of 55 micrograms. Packed fresh in Monroe, New York and sealed in a resealable pouch with a 365-day shelf life from packing date, these raw brazilian nuts arrive at peak freshness.
What Are Brazil Nuts Good For?
The headline answer is selenium. Selenium drives thyroid hormone conversion from inactive T4 to active T3, supports immune function, and acts as an antioxidant cofactor inside the body. One raw brazil nut delivers 68 to 91 micrograms of selenium, more than enough to cover the 55 microgram US daily requirement in a single bite.
The full nutrition profile per one ounce (about five to six nuts) covers 185 calories, 4.1g plant protein, 18.8g monounsaturated and polyunsaturated fat, 1.4g net carbs, 25% DV magnesium, and 54% DV copper. The macros fit keto, vegan, paleo, and Mediterranean diets cleanly. Polyphenols including ellagic acid and gallic acid round out the antioxidant load.
Best Brazil Nuts for Selenium Intake
Not every brazil nut delivers the same selenium load. Levels vary by soil composition where the trees grow. The Bolivian Amazon produces the highest-tested selenium content globally, which is why our supply partners with castañero cooperatives in that specific region. Our raw brazil nuts test consistently at the upper end of the 68 to 91 mcg range.
Two factors lower selenium in commodity brazil nuts: high-heat roasting and PPO fumigation. Our kernels are genuinely raw with no roasting and no PPO treatment. Vitamin E and polyphenol load stay intact, which is what most retail brazil nuts lose during commercial processing.
How Many Raw Brazil Nuts Should You Eat Per Day?
One to two nuts per day is the safe daily ceiling for most adults using raw brazil nuts as a selenium source. Three on occasional days is fine. The tolerable upper intake limit for selenium is 400 mcg per day, which means eating more than four nuts daily for extended periods pushes you above the safe ceiling and into selenosis territory.
This is one of the few foods where restraint actually matters. The right approach is consistency at a modest dose rather than larger handfuls. For people using brazil nuts specifically for thyroid support, two daily covers the selenomethionine intake range used in most clinical trials.
How to Store Raw Brazil Nuts for Freshness
Brazil nuts carry one of the highest fat contents in the nut family, which means storage handling affects shelf life directly. Sealed at room temperature in the resealable pouch, raw brazil nuts hold quality for two to four weeks. Refrigerated, four to six months. Frozen in an airtight container, up to twelve months without quality loss. For the 3 lb or 5 lb sizes, divide and freeze most of it on arrival, then pull individual servings into the pantry as you go.
Why Buy Raw Brazil Nuts from Nut Cravings
These are Kosher Certified (Beth Din Minchas Chinuch Tartikov), Non-GMO verified, vegan, gluten-free, and free of PPO fumigation, added oils, salt, and preservatives. Free shipping covers all 50 US states with no minimum order. The Farmers Seal of Freshness backs every bag with a 100% satisfaction guarantee. Browse our full Brazil nuts collection for additional sizes and processing styles, or our nut gift baskets for assortments featuring Brazil nuts.
Stock raw brazil nuts in your pantry, take one or two each morning, and let the selenium do its work over time.
Health Benefits of Raw Brazil Nuts
Blood Sugar Regulation ▾
- The magnesium content in Brazil nuts plays a role in insulin sensitivity. Magnesium is a cofactor in over 300 enzymatic reactions, including several involved in glucose metabolism. Population studies consistently show that higher dietary magnesium intake is associated with lower risk of type 2 diabetes.
- Brazil nuts also have a low glycemic index and a fat and protein composition that slows gastric emptying. This means eating them as a snack produces a modest, gradual blood sugar response rather than a spike, making them a smart choice for people managing blood sugar or following a low-glycemic dietary approach.
Fertility and Reproductive Health ▾
- Selenium plays a direct role in sperm motility and morphology. Low selenium is one of the more common correctable nutritional factors in male infertility workups. Studies have shown that men with selenium deficiency have significantly lower sperm motility and higher rates of sperm DNA fragmentation compared to selenium-sufficient men.
- For women, selenium supports progesterone production and is involved in the antioxidant protection of developing eggs. Thyroid health, which is selenium-dependent, also directly affects menstrual regularity and fertility outcomes.
Bone Density and Mineral Support ▾
- Brazil nuts are a solid source of magnesium (26% DV), phosphorus (17% DV), zinc (11% DV), and copper (55% DV). These aren't just supporting players in bone health. Copper is required for collagen synthesis, which provides the structural framework that calcium and phosphorus crystallize around. Without adequate copper, bone matrix quality suffers regardless of calcium intake.
- The magnesium in Brazil nuts is also more bioavailable than magnesium in supplement form. Food-sourced magnesium comes packaged with co-factors that improve absorption, and the fat content in Brazil nuts further enhances uptake of fat-soluble minerals.
Skin Health and Anti-Aging ▾
- Selenium and vitamin E work synergistically as antioxidants, and Brazil nuts are one of the few foods with meaningful amounts of both in a single serving. Together, they protect skin cells from UV-induced oxidative damage, reduce inflammatory markers associated with acne and eczema, and support collagen cross-linking for structural skin integrity.
- The fatty acid profile, high in oleic and linoleic acids, also supports skin barrier function from the inside out. People with dry skin or conditions like psoriasis often see improvement when dietary fat quality improves, and the fat in Brazil nuts is well-suited to this purpose.
Immune System Support ▾
- Selenium is required for the activation and proliferation of T-cells, the white blood cells that coordinate your immune response to infection and abnormal cell growth. When selenium intake drops below optimal, T-cell activation slows, NK (natural killer) cell activity decreases, and your body's first-line antiviral defenses weaken.
- During periods of illness, selenium levels drop rapidly because the immune response consumes it quickly. This is why sick people often have measurably low selenium levels even if their baseline intake was adequate. Maintaining good selenium status through diet before you get sick matters more than trying to correct it after.
- Brazil nuts also contribute zinc, which works alongside selenium in immune regulation. The combination of both minerals in a single food source is genuinely uncommon.
Prostate Health in Men ▾
- Selenium has been studied more extensively in relation to prostate health than almost any other mineral. The SELECT trial and follow-up analyses have had mixed findings depending on baseline selenium status, but the consistent thread across research is this: men with low baseline selenium who supplement to adequate levels show reduced markers of prostate cancer risk.
- A 2001 study published in the Journal of the National Cancer Institute found that selenium supplementation in selenium-deficient men reduced prostate cancer incidence by 63%. Brazil nuts provide selenium in the form of selenomethionine, the organic form your body absorbs and retains most efficiently. This is the same form used in most clinical selenium studies.
- For men over 40 who are thinking about prostate health, eating 2-3 Brazil nuts daily is one of the simplest, cheapest, and most evidence-backed dietary adjustments available.
Brain Health and Cognitive Function ▾
- A 2014 study in the European Journal of Nutrition looked at elderly patients in the early stages of Alzheimer's disease. Those given selenium-rich Brazil nuts daily showed measurable improvements in verbal fluency and cognitive performance compared to the control group. The researchers attributed this to selenium's role in protecting neurons from oxidative damage and regulating neurotransmitter synthesis.
- Selenium's antioxidant function matters a lot in the brain specifically because the brain consumes roughly 20% of the body's total oxygen while accounting for only 2% of body weight. That oxygen demand creates significant oxidative byproducts, and selenoproteins are a primary defense mechanism against neuronal oxidative damage.
- There's also emerging research connecting selenium status to lower rates of depression and anxiety. Selenium appears to influence the availability of serotonin precursors and modulate the HPA axis response to stress. This is still an active area of research, but the correlation between low selenium and poor mood outcomes is consistent across multiple population studies.
Cardiovascular Protection ▾
- Brazil nuts support heart health through multiple pathways. The selenium content reduces oxidative stress in arterial walls, which lowers the risk of plaque buildup. The monounsaturated fatty acids, particularly oleic acid, help raise HDL cholesterol while keeping LDL in a healthy range.
- But the standout cardiovascular nutrient in Brazil nuts might actually be ellagic acid, a polyphenol that functions as both an antioxidant and an anti-inflammatory compound. Research published in the Journal of Nutrition in 2013 found that participants who ate
- Brazil nuts experienced significant reductions in LDL cholesterol and increases in HDL cholesterol within 9 hours of consuming a single serving. Those effects were still measurable 30 days later, even after participants stopped eating them.
- The magnesium content contributes as well. At 26% of the daily value per ounce, magnesium helps regulate blood pressure by relaxing smooth muscle in blood vessel walls. Chronic magnesium deficiency is strongly associated with hypertension, and Brazil nuts are one of the better food sources of it.
Thyroid Function and Hormone Conversion ▾
- Your thyroid gland produces a hormone called T4, but T4 is largely inactive. To become the T3 form your cells can actually use, it has to be converted by an enzyme called iodothyronine deiodinase. That enzyme is selenium-dependent. Without selenium, T4 builds up and T3 stays low, even when your iodine intake is perfectly fine.
- This is why people with autoimmune thyroid conditions like Hashimoto's disease are frequently told to pay attention to selenium intake. A 2014 meta-analysis published in Thyroid found that selenium supplementation significantly reduced thyroid antibody levels in patients with Hashimoto's. Eating 2 Brazil nuts provides approximately the same selenium dose used in most of those studies.
- If you've had thyroid labs come back with low T3 despite normal TSH and T4, selenium intake is worth looking at before jumping to medication.
Selenium: The Mineral Most People Are Deficient In ▾
- The World Health Organization estimates that close to one billion people worldwide don't get enough selenium. It's one of the most overlooked nutrient deficiencies because the symptoms are subtle until they're not. Fatigue, sluggish thyroid, reduced immunity, poor wound healing. Most people never connect the dots.
- One ounce of raw Brazil nuts, roughly six medium nuts, delivers 544 micrograms of selenium. The adult recommended daily allowance is 55 micrograms. That's not a rounding error. You're getting nearly 10 times the daily requirement in a single small serving.
- Selenium is what your body uses to produce selenoproteins, a group of 25+ proteins that regulate everything from thyroid hormone conversion to DNA repair to oxidative stress response. Without enough selenium, these processes slow down. With enough of it, your cells have what they need to function properly. Brazil nuts are the most efficient, most natural way to correct a deficiency or maintain healthy levels.
- One note worth mentioning: more is not always better with selenium. The tolerable upper intake level for adults is 400 micrograms per day. Eating 1-3 Brazil nuts daily keeps you well within safe and beneficial range. Eating a pound of them every day would be a bad idea. That said, at a normal serving of 1oz, you'd need to eat close to a pound a day consistently to reach toxicity. No one does that.
Nutrition Facts and What They Actually Mean
Word target: 700+ words. Goes beyond the standard nutrition label with real explanations, comparison context, and information no competitor provides.
| Nutrient | Per 1 oz | %DV |
|---|---|---|
| Calories | 186 | -- |
| Total Fat | 19g | 24% |
| Saturated Fat | 4.3g | 22% |
| Monounsaturated Fat | 7g | -- |
| Polyunsaturated Fat | 6g | -- |
| Cholesterol | 0mg | 0% |
| Sodium | 0.9mg | 0% |
| Potassium | 186mg | 5% |
| Total Carbohydrate | 3.5g | 1% |
| Dietary Fiber | 2.1g | 8% |
| Total Sugars | 0.7g | -- |
| Protein | 4.1g | 8% |
| Selenium | 544mcg | 770% |
| Copper | 0.49mg | 55% |
| Magnesium | 107mg | 26% |
| Phosphorus | 205mg | 17% |
| Zinc | 1.2mg | 11% |
| Iron | 0.69mg | 4% |
| Calcium | 45mg | 4% |
| Vitamin E | 1.6mg | 8% |
| Thiamine(B1) | 0.18mg | 15% |
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