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The Importance of Boron for Improving Knee Strength and Joint Health


Boron offers numerous health benefits, but many individuals may not be getting an adequate amount despite its presence in various foods.

Are you hesitant to go for a run due to knee pain? You’re not alone; approximately 25 percent of adults face a similar issue. Thankfully, there are natural remedies that can help, and one simple solution might involve improving your knee health through diet.
Research indicates that boron plays a critical role in various biological processes that promote human health. Studies have shown that boron can enhance bone health, reduce inflammation, regulate mineral metabolism, improve cognitive function, and even aid in cancer treatment.

Boron Basics

You might recall boron as the fifth element on the periodic table from your high school chemistry class. In everyday life, boron is present in borax, a product used in laundry to enhance cleanliness and whiteness of clothes. Borax is also utilized to reinforce glass, making it more resistant to temperature changes, such as in Pyrex baking dishes.

Boron is a mineral and trace element naturally found in food, water, and the environment. While it is essential for plant life, it is not classified as essential for humans as of yet.

“In nature, and in the way we consume it, and in how our bodies utilize it, it’s typically in the form of boric acid,” explained Forrest Nielsen, a distinguished research nutritionist with the United States Department of Agriculture (USDA), who has devoted almost five decades to studying the health benefits of boron.

“It has not been definitively proven as essential because there is no specific biochemical role for it, and there’s no evidence that omitting it from the diet would hinder our ability to reproduce or survive. Nevertheless, it does offer advantages,” he remarked to The Epoch Times.

Nielsen pointed out that insufficient boron levels in certain species can have severe consequences.

“A deficiency of boron in animals such as frogs and zebrafish has been linked to adverse effects on embryonic development. Therefore, it may be crucial for embryo development, but this is limited to those two species,” he remarked.

Boron offers numerous benefits for humans, as evidenced by multiple studies.

One study published in Integrative Medicine: A Clinician’s Journal explored the advantages of boron, highlighting its significant roles in human health, including:

  • Bone health
  • Wound healing
  • Hormone regulation
  • Magnesium absorption
  • Anti-inflammatory effects
  • Antioxidant support
  • Detoxification
  • Cognitive benefits
  • Cancer prevention and treatment

Research suggests that individuals should aim to consume at least 1 milligram of boron daily to maintain basic health, yet many may be lacking in their intake.

A recent study published in The Lancet Global Health revealed that over 5 billion individuals worldwide have micronutrient deficiencies. Moreover, nearly the entire global population lacks sufficient intake of at least one vital micronutrient among the 15 essential micronutrients evaluated, including iodine, vitamin E, calcium, iron, folate, magnesium, zinc, and vitamin C.

A diverse diet centered on vegetables, plant-based foods, nuts, and legumes can help increase boron levels while promoting knee health.

Benefits for Knee Health

Research indicates that boron can enhance knee health through its support of bone health, inflammation reduction, and potential improvements in joint flexibility and stiffness.

A study in 2021 investigated the role of trace elements and their impact on osteoarthritis—joint wear and tear that worsens over time. The study highlights magnesium and boron as “essential” for human bone and joint development. The authors also note that boron (along with selenium) can prevent and treat osteoarthritis by enhancing cartilage matrix formation and stimulating chondrocyte proliferation, thanks to their anti-inflammatory and antioxidant properties.

Reducing Inflammation

Research has also indicated that boron reduces inflammation by lowering key inflammatory markers like C-reactive protein (CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha). These markers are often elevated in individuals with inflammatory conditions such as arthritis, cardiovascular disease, Alzheimer’s, and certain cancers.

In a study, 116 individuals diagnosed with primary osteoarthritis in the knee who supplemented with calcium fructoborate (a source of soluble boron) demonstrated significant reductions in pro-inflammatory cytokines after 15 days, leading to decreased inflammation and pain. The study’s authors concluded that supplementation showed promise for treating inflammatory diseases.
Aside from reducing inflammation, boron also diminishes oxidative stress. Numerous studies, predominantly in rat models, have shown that boron compounds mitigate tissue damage caused by oxidative stress.

Supporting Bone Health

One manner in which boron impacts bone health is through its influence on vitamin D. Boron enhances the absorption and utilization of vitamin D, crucial for calcium and phosphorus metabolism vital in building and maintaining strong bones. Research has also indicated that boron can increase blood levels of vitamin D (25-hydroxyvitamin D), potentially helping sustain elevated circulation levels.

Various studies on postmenopausal women have revealed the benefits of boron in promoting bone health by reducing calcium loss and supporting the growth and upkeep of bone tissue. Specifically, boron aids in calcium, vitamin D, and sex steroid hormone metabolism.
Due to decreased estrogen levels during menopause, postmenopausal women face an increased risk of osteoporosis. Specifically, the reduction in estrogen during the menopausal transition period leads to more bone resorption than formation, consequently contributing to osteoporosis.
In vitro and animal research also suggest that boron promotes bone regeneration.

Enhancing Joint Function

Studies have indicated that boron can improve joint health.

A review discovered that boron significantly reduced knee discomfort and boosted flexibility.
In a randomized controlled trial, 60 participants with knee discomfort and pain were given 110 milligrams of boron (as calcium fructoborate) twice daily or a placebo. Those in the boron group experienced substantial improvements in knee discomfort and pain over two weeks.
In another eight-week study, 20 patients consumed 6 milligrams of boron daily (as calcium fructoborate) for mild to moderate osteoarthritis or 12 milligrams for severe osteoarthritis. The boron reduced joint rigidity, lessened the need for pain relief medications, increased flexibility, and improved mobility.

Food Sources

Boron is mainly found in plant-based foods. Some of the top sources include:

  • Fruits and fruit juices like raisins, prunes, peaches, grapes, apples, pears, and avocados
  • Vegetables such as broccoli, spinach, and carrots
  • Legumes like peanuts, beans, lima beans, and green peas
  • Other food items including coffee, milk, cider, wine, and beer
(PosiNote/Shutterstock)

PosiNote/Shutterstock

Recommended Amounts

Although there are no official recommended daily allowances for boron, both animal and human studies recommend that adults consume between



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