Borax or sodium tetraborate hexahydrate, or related name is a boron mineral that is an essential minerals for mammals but are toxic for insects, parasites and hence is used to get rid of parasites and has a unique anti-fungal.
Most reported toxicity is boric acid, which is the acid component of boron, but the sodium borate is an alkaline component so it's toxicity is low. Israel has the world's lowest arthritis and rheumatism because the borax content high in their drinking water is high. Boron deficiency leads to osteoporosis and many problems associated with candida, lichen planus, and the like.
One of the most unique features of borons is it's toxicity of 2000 mg/kg of LD50 is equivalent toxicity equal to that of sodium chloride, which is salt. Boron raises the body's immune system by normalizing the body's hormone system and raises libido and sexual impotence and has some unique viagra like properties in both men and woman. Boron is an essential minerals in stabilizing calcium and magnesium components in the blood. Its anti cancer properties of boron or borax owes it to the fact it can kill fungus, reduce mycotoxins and which is really the cause behind cancer, arthritis, candida, and polycystic ovarian syndrome. It reduces excessive calcification of the pineal gland which is the control center of the biological clock and is used to detoxify or reduce the toxicity of fluoridated water.
One common poisoning that parents worry is when children eat up the almost most of the toothpaste tube and borax has saved their life. The toxicity of fluoride we used in toothpaste is actually more than 10 times more toxic than borax. Borax toxicity of LD50 is equal to that of Salt, which is safer than some of the pharmaceuticals that is FDA approved.
 
Boron
According to conventional medicine it is not known if boron is essential for humans but research shows that we do need it. The reason why it was difficult to answer this question is the presence of boron in all plants and unprocessed foods. Diets with a fair amount of fruit and vegetables provide about 2 to 5 mg of boron per day, but this also depends on the region where the food was grown and how it was grown.
In reality the average intake in developed countries is 1-2 mg of boron per day. Institutionalized patients may receive only 0.25 mg of daily boron. Chemical fertilizers inhibit the uptake of boron from the soil:  an organic apple grown in good soil may have 20 mg boron, but if grown with fertilizer it may have only 1 mg of boron. Fertilizers combined with poor food choices have greatly reduced our boron intake compared to 50 or 100 years ago.
Further, unhealthy cooking methods greatly reduce the availability of boron from food. The cooking water of vegetables containing most of the minerals may be discarded during home cooking or commercial processing; phytic acid in baked goods, cereals and cooked legumes may greatly reduce availability, while gluten sensitivity and Candida overgrowth inhibit the absorption of minerals. All this makes health problems due to boron deficiency now very common.
Health Effects of Boron
Protects you from Fluorides. Borax protects against the accumulation of fluorides in the body; is effective as an antidote in fluoride toxicity; and can remove fluorides from the body.
Anti-microbial. Borax is toxic to insects, parasites, protozoa and bacteria.
Fungicide. Effective against molds and fungi, internally and externally.
Anti-viral
Hormone normalizer. Stimulates the production of hormones, stabilizes estrogen, assists with insulin use and blood glucose control, triglyceride use and production of reactive oxygen. With boron sufficiency, blood serum triglyceride levels are significantly lower.  Estrogen replacement therapy may not be necessary.
Immune system enhancer.  Promotes healing of wounds.
Reduction and control of inflammation.
Aphrodisiac for men and women. Boron stimulates the production of testosterone and normalizes estrogen.
Toxin removal. Powerful chelator of heavy metals.
Stabilizer of calcium, copper and magnesium levels, inhibits calcification. Boron sufficiency normalizes calcium levels, preventing both abnormal calcium deposition and bone weakness. Boron sufficiency inhibits the concentration of copper in the bones and prevents loss of bone.
Mental enhancement. Improves attention, both short and long term memory, perception, hand-eye coordination, and manual dexterity.
Due to their content of boron, borax and boric acid have basically the same health effects, with good antiseptic, antifungal, and antiviral properties but only mild antibacterial action. 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.
Boron is distributed throughout the body with the highest concentration in the parathyroid glands, followed by bones and dental enamel. It is essential for healthy bone and joint function, regulating the absorption and metabolism of calcium, magnesium and phosphorus through its influence on the parathyroid glands. With this boron is for the parathyroids what iodine is for the thyroid.
Boron deficiency 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. 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; arteriosclerosis, kidney stones, and calcification of the kidneys ultimately leading to kidney failure. Boron deficiency combined with magnesium deficiency is especially damaging to the bones and teeth.
Boron affects the metabolism of steroid hormones, and especially of sex hormones. It increases low testosterone levels in men and oestrogen levels in menopausal women. It also has a role in converting vitamin D to its active form, thus increasing calcium uptake and deposition into bone and teeth rather than causing soft tissue to calcify. Also other beneficial effects have been reported such as improvement of heart problems, vision, psoriasis, balance, memory and cognition.
The German cancer researcher Dr Paul-Gerhard Seeger has shown that cancer commonly starts with the deterioration of cell membranes. As boron is essential for cell membranes and boron deficiency widespread, this may be an important cause for the initiation of tumour growth. Boron compounds have anti-tumour properties and are "potent anti-osteoporotic, anti-inflammatory, hypolipemic, anti-coagulant and anti-neoplastic agents
The Arthritis Cure of Rex Newnham
In the 1960's Rex Newnham, Ph.D., D.O., N.D, developed arthritis. At that time he was a soil and plant scientist in Perth, Western Australia. Conventional drugs did not help, so he looked for the cause into the chemistry of plants. He realized that plants in that area were rather mineral deficient. Knowing that boron aids calcium metabolism in plants he decided to try it. He started taking 30 mg of borax a day, and in three weeks all pain, swelling and stiffness had disappeared.
He told public health and medical school authorities about his discovery but they were not interested. However, some people with arthritis were delighted as they improved. Others were scared to take something with a poison label on the container and meant to kill cockroaches and ants. Eventually he had tablets made with a safe and effective quantity of borax.
Within five years and only by word of mouth he sold 10,000 bottles a month. He could no longer cope and asked a drug company to market it. That was a major mistake. They indicated that this would replace more expensive drugs and reduce their profits. It so happened that they had representatives on government health committees and arra