Strontium is the 15th most abundant element on earth. A naturally occurring trace mineral present in water and a wide variety of foods, strontium’s primary source in the diet is seafood, and it also is found in whole grains, meat, poultry, root and leafy vegetables, legumes, Brazil nuts, molasses and spices.1 Nearly all of the strontium present in sugar beets, sugar cane and wheat is lost when these whole foods are refined and processed to produce white sugar and white flour.3
The amount of strontium in fresh produce depends largely on the amount of strontium in the soil in which it was grown. Regions with strontium-rich soils also tend to have higher levels of strontium in their drinking water.
The typical American diet supplies only a scant amount of strontium—just 1 to 3 mg per day, which has been reported to support dental health but may be insufficient to support bone health.1,3
Strontium absorption and metabolism rates are closely linked to that of calcium. Strontium is concentrated in bones and teeth where trace amounts of it are found. Studies suggest that, for better bioavailability, strontium should be taken on an empty stomach, separate from calcium. Scientists have studied the importance of strontium on bone and dental health since the 1950s and 1960s, when they first observed that people living in areas with higher concentrations of strontium in drinking water had healthier teeth. The results of several large studies attribute regional variations in dental health to the presence of trace elements, including strontium, in the water supplies.2
Strontium is already present in bone, so eating more foods with strontium or consuming additional strontium is simply making more strontium available for incorporation into bone matrix–thus helping to maintain strong bones.
Interest in strontium was rekindled recently because of its potential ability to simultaneously provide nutritive support for the healthy function of osteoblasts (the cells that build new bone) while helping to reduce the activity of osteoclasts (the cells that break down old bone.) By exerting two positive effects on bone metabolism, strontium may help support normal, healthy bone density and strength.
The Importance of Strong Bones
Bone is living tissue that changes throughout life. It is made mostly of collagen, a protein that provides a soft framework, and calcium phosphate, a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong yet flexible to withstand stress.4
During childhood and adolescence, bone grows in width and length and bone formation outpaces resorption, producing a natural accumulation of bone mass. With advancing age, bone resorption increases and bone formation slows, setting the stage for low bone mineral density and the potential to develop either a decrease in bone density or increasingly fragile bones. Reduced bone density and increased bone fragility occurs in all age groups and populations, but their peak prevalence is among middle-aged and older women. During and after menopause, a significant increase in bone resorption occurs that is not offset by new bone formation.
Since people with weakened bones are more likely to suffer from debilitating bone damage, it is vitally important to support bone health before damage occurs. Bone damage is a progressive, silent course, often with no symptoms. Most people are unaware that they no longer have strong, dense bones. Weak bones also is a widespread problem—according to The National Osteoporosis Foundation, more than 10 million Americans have been diagnosed with weakened bones and half of all women age 50 and older and one-quarter of men over age 50 will suffer bone damage during their lives.5 Weight-bearing exercise and a healthy diet high in fiber and low in fat with natural sources of calcium may help maintain good bone health and may reduce the risk of osteoporosis later in life.
1. National Osteoporosis Foundation. Osteoporosis Clinical Updates. 2002; 3(2): 1-7.
2. Bowen WS. Exposure to metal ions and susceptibility to dental caries. J Dent Edu. 2001; 65(10):1046-53.
3. Gaby AR. Strontium and dental caries. Townsend Letter for Doctors and Patients, 2005.
4. (20 October 2006).
5. Hampton T. Experts Urge Early Investment in Bone health. JAMA. 2004; 291(7):811-12.
Directions: Use only as directed. Take two (2) tablets daily with a full glass of water. Store in a cool, dry place.
Serving Size 2 Tablets
Servings Per Container 30
Serving % Daily
Total Carbohydrate <1 g <1%†
Dietary Fiber <1 g 2%†
Vitamin D (as Cholecalciferol) (D-3) (fish) 400 IU 100%
Strontium (as Strontium Citrate) 680 mg *
*Daily Value not established.
†Percent Daily Value based on a 2,000 calorie diet.
Other Ingredients: Cellulose, Stearic Acid, Magnesium Stearate and Silica.