Published: October 16, 2025
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Boron is the superhero mineral you're not getting enough of: - helps bone mineralization - improves vitamin D - improves testosterone/estrogen status - increases antioxidant defense - reduces inflammation - reduces calcium/magnesium loss

Image in tweet by Siim Land

Boron is a trace element that is found in nature bound to oxygen and sodium Boron is found in many foods, especially plants, as it's a structural component of plant cell walls, providing cell wall rigidity.

Image in tweet by Siim Land

More than 90% of boron consumed is absorbed and distributed as boric acid Boric acid forms ester complexes with many important sugars in energy production, such as ribose, and stabilizes them, helping to produce energy and combat fatigue (PMID: 24352855)

Image in tweet by Siim Land

Thus, boron regulates ribose-containing enzymes, such as SAMe, NAD, and the NAD+ metabolite cyclic ADP ribose (PMID: 12827632) These enzymes are involved with energy production, neurological function, cardiovascular health, and bone formation.

Boron status is correlated with reduced prostate, cervical, and lung cancer (PMID: 17295277; PMID: 21196370) Turkish men with a boron intake of 6 mg/day have significantly smaller prostate glands than men who consume 0.64–0.88 mg/day (PMID: 21431327) Among women with lung

Boron can act as an Nrf2 activator, which activates our body’s overall antioxidant defense enzymes (PMID: 30196486). This is why boron has been suggested to protect against oxidative stress and DNA damage.

Image in tweet by Siim Land

Boron can reduce symptoms of osteoarthritis and inflammation (DOI:10.3109/13590849009003147) In regions with boron intake less than 1.0 mg/day, the estimations of arthritis range from 20-70%, whereas in areas with 3-10 mg/day, the estimates for arthritis are 0-10% (Newman 2002)

Image in tweet by Siim Land

It's found that, 6 mg of boron for 8 weeks reduced symptoms of osteoarthritis in 50% of subjects compared to 10% in placebo (PMID: 7889887) A double-blind, placebo-controlled clinical trial saw that taking 6 mg of boron for 2 weeks reduced knee discomfort in adults over the age

Boron affects the function of many hormones, including vitamin D. Boron also increases vitamin D3 levels in animals and vitamin-D-deficient humans (PMID: 7889882) Boron also increases the half-life of active vitamin D (PMID: 15504575)

Image in tweet by Siim Land

Boron is the most underrated yet highly effective mineral for boosting sex hormones like testosterone and estrogen. It inhibits SHBG, thus resulting in higher free testosterone. Boron inhibits estrogen breakdown and enhances estrogen receptor beta activity. Both estrogen and

Boron does not have an established RDA or an adequate intake value, but the World Health Organization recommends an acceptable safe range of 1-13 mg of boron per day for adults An intake of 1-2 mg of boron is enough to prevent deficiencies, but 3 mg/d is more optimal

Image in tweet by Siim Land

Reported intakes of boron range from 0.89-1.11 mg/d in the U.S., 1.75-2.12 mg/d in Mexico, 0.8-1.9 mg/d in the EU, and 0.93 mg/d in Korea Thus, everyone needs a bit more to reach the 3 mg/day optimal dose

Boron is found the most in plant foods, such as legumes, vegetables, tubers, and fruit. Boron does not accumulate in fish or land animals, but it does in algae, seaweed, and plants (PMID: 8470934).

Image in tweet by Siim Land

Prunes are an excellent source of boron, providing 1.5 to 3.0 mg of boron per 3 oz serving A study found that eating 3 ounces of prunes a day for a year improved bone mineral density in postmenopausal women, but dried apples did not (PMID: 21736808)

Top boron foods: - Dried prunes 1 cup 7.2 mg - Kidney beans 1 cup 2.5 mg - Avocado 1 cup 2 mg - Black currants 1 cup 1.74 mg - Lentils 1 cup 1.5 mg - Raisins 1 oz 1.4 mg

Image in tweet by Siim Land

If you want to learn everything about boron and all the other essential minerals, then check out my book with @drjamesdinic called The Mineral Fix https://amazon.com/Mineral-Fix... Thanks

@siimland Optimal Boron levels are essential to preventing Dementia: https://www.youtube.com/watch?...

@siimland Cool story bro.

Image in tweet by Siim Land

@siimland Good breakdown. Boron reducing SHBG while also supporting vitamin D is a double win.

@siimland sodium tetraborate

@siimland I take 9mg a day, no missing out here.

@siimland Boron indeed plays a fascinating role in various biological processes. Its influence on bone health and hormonal balance is particularly intriguing. However, the optimal intake level and its broader impacts on health should be approached with scientific caution and inquiry. Do

@siimland Boron creates bald men in about two months. You feel great though--while going bald.

@siimland 12mg / day - 2 weeks on , 2 weeks off

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