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Updated 15 june 2020.  Text that is blue, covers a link!  The pages are informative – not therapeutic.

Boron is distributed throughout the body with the highest concentration in the parathyroid glands, followed by bones and dental enamel. It is essential for teeth and healthy bone and joint function, regulating the absorption and metabolism of calcium, magnesium and phosphorus through its influence on the parathyroid glands.

Boron deficiency

We need 3- 10 mg boron/day. An upper limit is artificially set to 20 mg.
Not enough boron causes the parathyroids to become overactive, releasing too much parathyroid hormone which raises the blood level of calcium by releasing calcium from bones and teeth. This then leads to osteoarthritis and other forms of arthritis, osteoporosis and tooth decay. Boron deficiency combined with magnesium deficiency is especially damaging to the bones and teeth.
With advancing age high blood levels of calcium lead to calcification of soft tissues causing muscle contractions and stiffness; calcification of endocrine glands, especially the pineal gland and the ovaries. This may lead to arteriosclerosis, kidney stones, and calcification of the kidneys ultimately leading to kidney failure.

Phosphate fertilizer production.


Boron from nutrition
Good sources are e.g. raisins (very best), apricots, nuts, avocado. Meat, fish does not contain boron at all. Overview.
Fertilizers inhibits strongly plants from absorbing boron.


Boron compounds, usage and purchases can be found at the bottom of the page


Boron has positive health properties in relation to the subsequent

Improves the brains electrical activity, the overall cognitive performance, short- and long-term memory and eye-hand coordination

The anti-inflammatory effect is very significant 
Inflammation can cause problems like:
Joint pain, muscle stiffness, redness or swelling, severe headaches and even loss of joint function.
Several large population-based, clinical studies have specifically shown that levels of a compound called C-Reactive Protein (CRP) which is the marker of inflammation are inversely and independently associated with our total bone mineral density levels.

Boron when used in combination with a plant sourced calcium, has been found to significantly reduce blood levels of CRP in humans, this is a huge impact on our bone health. Higher levels of CRP are stronger associated with lower Bone Mineral Density (BMD).

As seen in the 2014 Canada example, approx. half of the population are getting arthritis in their lives. It is therefore wise to prevent or seize the problem initially.

Arthritis is caused by inflammation in your joints.
Boron was first used for arthritis by Rex Newnham in his famous treatment of arthritis.

Boron is also effective with other forms of arthritis, such as Rheumatoid Arthritis, Juvenile Arthritis, and Lupus (Systemic Lupus Erythematosus).
Boron makes the bones much harder and the synovial fluid that lubricates joints better.
Boron has been prescribed for the treatment of arthritis in Europe, especially in Germany since the early 1970’s. And in some arthritis and osteoarthritis patients the result of utilizing boron (> 6 mg/day) has been the complete resolution of their symptoms.

Oxidative stress is decreased and the immune system boosted 
Boron increase levels of antioxidant enzymes, eg. glutathione peroxidase.
In animal studies, boron not only decreased oxidative stress, but it increased the antioxidant defense mechanisms
of the animals and regenerated damaged tissues in their liver, kidneys, and brain.

Cell walls

In plants as well as animals, boron is essential for the integrity and function of cell walls, and the way signals are transmitted across membranes.

Metabolic processes
Helps speed up Metabolic processes like bone growth and wound healing

Boron is able to clean the receptor sites of cell membranes.
This is particularly important for diabetes type 2 and hypothyroidism type 2.


Boron helps your body metabolize insulin and may help reduce the amount required to maintain optimal plasma glucose based on several animal studies.
With the help of boron and a healthy diet, you can keep your blood sugar levels exactly where you want them.

Calcium and magnesium 
Boron increase calcium and magnesium absorption and reduce urinary calcium loss.
It helps with Kidney Stones.

An increasing number of papers have indicated that boron possesses anticarcinogenic properties.
Boron prevent/treat prostate, cervical, and lung cancers

The research findings on boron in relation to cancer have been consistently positive.
No negative side effects have been seen in relation to boron, in relation to breast, ovarian and prostate cancer.
In fact, just the opposite.
Population studies have found that an inverse association between dietary boron and prostate, cervical and lung cancers.
And cell culture studies have shown that boron actually inhibits the growth of some types of prostate and breast cancer cells.
Boron may help from adverse effects of chemotherapy.

Prostate cancer
Boron compounds inhibit the activity of many serine protease enzymes, including prostate-specific antigen (PSA). Recent studies indicate that elevated PSA may promote prostate cancer via its degradation effects on the extra-cellular protein matrix (the protein surrounding the cell) within the prostate gland.
Breaking down these cellular barriers may enable prostate cancer cells to more readily invade healthy tissue and spread (metastasize) beyond the prostate gland. Using a validated animal model of prostate cancer, researchers found that oral administration of various concentrations of a boron-containing solution in test subjects led to substantial decreases in tumor size, ranging from 25% to 38%.
Even more impressive, PSA levels dropped by an astounding 86-89% in the test animals that received boron. By contrast, animals that did not receive supplemental boron experienced no decrease in tumor size or PSA level.19 These findings suggest that supplemental boron may help to shrink prostate tumors while decreasing levels of PSA, an important prostate cancer marker. They are especially timely in light of the recent discovery that PSA itself may contribute to prostate cancer promotion. Ensuring adequate boron intake should thus be considered a critical component of any strategy to prevent prostate cancer and maintain optimal PSA levels.

Boron increases life-time and availability of hormones and vitamin D.
Promotes healthy hormone function of estrogen, thyroid hormones, insulin and progesterone, all of which are eg. involved in building healthy bones for us.
Vitamin K2, A, D and magnesium are also essential for bone health.
Vitamin K2 activates vitamin A and D, such that vitamin A removes calcium from soft tissue and defect bones and vitamin D places calcium in bones and teeth. Calcium comes usually plentiful from food, and comes best from plants, not supplements.
That said, magnesium is also a crucial part of the equation, as it is a component necessary for the activation of vitamin D. Without sufficient amounts of it, your body cannot properly utilize the vitamin D you’re taking.
Vitamin D deficiency has been linked to a plethora of nasty diseases such as high blood pressure, diabetes, cancer, and loss of bone density.

Antiseptic properties and related
Boron has antiseptic, antifungal, and antiviral properties, but only mild antibacterial action.
Boron therefore inhibit the growth and reproduction of many microorganisms

Boron has been shown to disrupt the biofilm layer (

Boosts estrogen levels in postmenopausal women
Estrogen affects the following: Healthy Bone Metabolism, Regulation of Food Intake, Maintaining Body Weight, Glucose Levels, Insulin Sensitivity.

Increases Testosterone in men
Testosterone is proven to increase muscle mass, sharpen memory and concentration, libido, and improve energy levels
Testosterone levels more than doubled when boron supplementation was given to those with previously low-boron diets
in one study. The same study showed a higher conversion rate of total testosterone to important free testosterone, after
only one week.

Boron has even been shown to reduce toxicity levels of heavy metals such as:
Arsenic Trioxide, Colloidal Bismuth Subcitrate, Cadmium Chloride, Mercury Chloride andLead Chloride.
In a chinese study borax was used to remove flourids. (Number 5 in a YouTube series: The Borax and Boron Miracle )

Borax is the main source of Boron and is found in salt deposits in California and Turkey.

It is commonly sold as technical, agricultural grade or household cleaner. It has 99 to 99.5% minimum purity with impurities consist of sodium, potassium, calcium, chloride, bicarbonate, carbonate, sulphate and phosphate but not toxic or heavy metals. Pharmaceutical grade is not noticeably purer or better.
Walter Last consider table salt more toxic than borax.
In many countries sales of borax has been forbidden since 2010. One may wonder why.

Borax powder is sold on ebay, just seek for pure Borax.

Boric acid
Borax is the sodium salt of the weak boric acid. Borax is strongly alkaline with a pH between 9 and 10.
Boric acid has pH about 5. Boric acid powder is sold on ebay, just seek for pure Boric acid.
Walter Last do not recommend Boric acid.

Borax use
Walter Last gives a procedure, how to use borax, first making a 1 liter bottle of concentrated boron:
Firstly dissolve a lightly rounded teaspoonful (56 grams) of borax in 1 litre of good quality water. This is your concentrated solution keep it out of reach of small children.
Standard dose = 1 teaspoon (5 ml) of concentrate per day mixed with drink or food.. This has 25 to 30 mg of borax and provides about 3 mg of boron. If that feels right then take a second dose with another meal. If there is no specific health problem or for maintenance you may continue indefinitely with 1 or 2 doses daily.
Walter Last describes how to use borax for  Candida, other fungi and mycoplasmas, or for removing fluoride
From the Earth Clinic forum some enthusiastic posts were about vaginal thrush eg. from candida:
Borax appeared to be more effective than other remedies. Commonly one large gelatine capsule filled with borax or boric acid was inserted at bedtime for several nights or up to 2 weeks. Alternatively the powder can be mixed with cool solidified coconut oil as a bolus or suppository.
On YouTube is shown how to treat Athlete’s Foot.

Oral intake
As ingested boron minerals are rapidly and nearly completely excreted with the urine,
a chelated product may be absorbed and utilized better than borax.
This product from USA
has three different boron compounds and also vitamin B2, as people with arthritis often are depleted of this vitamin.
(Such capsules are not meant for candida, other fungi and mycoplasmas.)

In Denmark only two containers are allowed without import charges, as the limit is 80 DDK before shipping.



Walter Last 2016,