Calcium Hydroxyapatite and How to Best Protect Your Bones

Some have referred to calcium hydroxyapatite as the future of bone health. It delivers a more bioavailable and more efficient form of calcium than other supplements. Here's what you need to know about adding it to your bone health regimen.

6 minute read

Last Updated September 20, 2021

Calcium Hydroxyapatite and How to Best Protect Your Bones

Seventy percent of your bone is made from a mineral complex consisting of calcium, phosphate, and hydroxy groups known as calcium hydroxyapatite. 

Calcium hydroxyapatite is a highly absorbable form of calcium that your body requires for bone health and prevention of bone degeneration. It makes sense that this ingredient would be the best of any bone health supplement

The Best Calcium for Bone Health

The health of human bones depends on three essential factors. Osteoclasts are cells that make new bone, and osteoblasts remove bones to distribute its minerals through the body as needed, and collagen forms the matrix around which bone can form. 

If the activities of osteoblasts occur more frequently than new bone can be formed, the result is weakened bones. Osteoclasts naturally slow down with age, making bone loss a greater risk as you age. 

Collagen is also affected by age. This protein creates a matrix of interlocking chains that are exceptionally strong. As the body ages, these chains become weaker, less elastic, and more brittle. 

To maintain a balanced function of the osteoclasts and osteoblasts and to supply the body with collagen, certain minerals are required from your diet. Calcium is one of the most essential nutrients to provide this balance and optimal bone health. Calcium hydroxyapatite contains the amino acids, phosphate, and other essential minerals that human bones need. 

Calcium hydroxyapatite’s similarity to the composition of natural bone allows for optimal bioavailability and stability over other calcium phosphate ingredients. The calcium found in calcium hydroxyapatite is superior to other forms, as it is naturally derived from bovine bones. 

Better Bioavailability, Better Bones

Without calcium, the bones become weak and brittle, increasing the risk for fractures as well as degenerative diseases like osteoporosis. Your bones remodel themselves throughout your life, but the process does slow with aging. To prevent damage that naturally occurs as a result of this, you need to supplement your bones with calcium. 

Studies have found that increased calcium intake is linked to increased total bone density in the body. The lumbar, spine, hip, and femoral regions of bone are specifically noted to increase significantly. 

Women are at greater risk for bone density loss as a result of hormone changes associated with menopause, so calcium hydroxyapatite is highly recommended to prevent osteoporosis. When supplemented in combination with vitamin D3, individuals also benefited from a reduced risk of fracture in these regions.

Because of the relation to the inorganic component of the bone matrix, calcium hydroxyapatite is the superior form of calcium to take for bone health. Not only can supplements help strengthen bones from within, but hydroxyapatite can be used externally to help repair bone fractures and injuries

The close likeness to the natural bone structure allows hydroxyapatite to be successfully used for bone additions and bone fillers. Hydroxyapatite has good biocompatibility with skin and muscles as well as bone, serving as an effective component in grafting bone.

Partnership with Vitamin D3

Calcium hydroxyapatite is more readily absorbed as compared to other calcium supplements, but regulation of calcium in the body depends on more than just calcium. Vitamin D, specifically vitamin D3, plays an integral role in maintaining calcium balance in the body. V

Vitamin D3 helps with bone development and mineralization, and when paired with calcium hydroxyapatite, the body is better able to absorb and use the calcium provided.

The hormone calcitriol is required for calcium absorption, and vitamin D3 contributes to the formation of this hormone. Without calcium absorption, the body must get the calcium it needs from additional sources, your bones. Calcium that is stored in the bones is removed and used as needed, which leads to weakened bones and the prevention of new bone formation. 

When vitamin D3 is paired with calcium hydroxyapatite, it is clinically proven to improve bone density more than calcium supplements alone.

Individuals over the age of 50 are unable to produce vitamin D as efficiently as they used to, even with adequate sun exposure. In addition to this, there is an increased risk of metabolic and digestive issues that can interfere with vitamin D absorption from food. 

Taking calcium hydroxyapatite is not going to be as effective without the help of vitamin D3, so if there are issues with getting the vitamin D3 you need, a supplement is going to be necessary to maintain bone health. 

Taking Calcium Hydroxyapatite

It is recommended to take no more than 1800 mg per day to improve bone strength and prevent diseases such as osteoporosis. Calcium hydroxyapatite is considered safe for human consumption but may cause constipation, gas, or bloating. Constipation is the most common side effect with calcium hydroxyapatite supplementation but is seen in only 4 percent of those who take it as a supplement. 

Calcium carbonate is commonly found in bone health supplements, but is not as readily absorbed as calcium hydroxyapatite. Calcium carbonate needs to be taken with meals because it requires a large amount of stomach acid to digest. This means that very little calcium is actually absorbed, less calcium reaches your bones, and more supplements are needed

Calcium citrate is another common calcium supplement that is more easily absorbed than calcium carbonate. The drawback being that calcium citrate supplements contain very little calcium, which means very little gets to your bones to improve bone strength and health. 

The Bottom Line

In combination with vitamin D3, hydroxyapatite can effectively protect your bones from age-related degeneration and reduce the risk of fracture and disease. 

Calcium hydroxyapatite holds the advantage over other calcium supplements in its structure and has a closer resemblance to natural bone compounds. Calcium hydroxyapatite is the future of bone health, delivering a more bioavailable and more efficient form of calcium.