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Filed under: Calcium

Eating for healthy joints and bones

HPRC Fitness Arena: Nutrition, Total Force Fitness
The physical demands placed on the Warfighter can take a toll on joints and bones over time. Following a healthy diet can keep your joints and bones in good shape.

The physical demands placed on the Warfighter in training and operational settings can take a toll on joints and bones over time. Following a healthy diet can help reduce your risk of many diseases and maintain healthy joints and bones. A few nutrients have been shown to support joint and bone health, including calcium, vitamin D, vitamin C, and selenium. Consuming too much alcohol has been shown to have a negative effect.

Calcium and vitamin D work together for strong bones and overall bone health, because vitamin D helps your body absorb calcium. Men and women ages 19–50 should try to get 1000 mg of calcium daily; older women need 1200 mg daily. Good sources of calcium include milk, yogurt, fortified orange juice, and green leafy vegetables. Your body produces vitamin D when your skin is exposed to sunlight, but you can also get it in your diet from salmon, tuna, and fortified dairy products. Adults need about 600 IUs of vitamin D daily.

Vitamin C is essential for cartilage—the material that cushions your joints and prevents bones from rubbing together. Men need about 90 mg and women need about 75 mg daily, roughly the amount in a large orange. You can get vitamin C from citrus fruit, broccoli, and tomatoes.

Dietary selenium (a mineral) also may play a role in bone health. Adults need about 55 mcg of selenium daily. Selenium is found in nuts (especially Brazil nuts), tuna, and sunflower seeds.

Drinking too much alcohol negatively affects many of the body’s systems, including the bones and joints. Alcohol can cause weight gain, increase risk for osteoporosis and stress injuries, and damage cartilage. Limit your alcohol consumption to one drink per day for women and two for men. A drink is defined as one 5 oz. glass of wine, one 12 oz. beer, or one 1.5 oz. shot of liquor.

Inflammation can play a role in joint conditions such as arthritis, so a diet that helps reduce inflammation might be beneficial in protecting your joints. Eating plenty of fruits and vegetables, whole grains, and healthy fats (found in nuts and fatty fish such as salmon) not only reduces inflammation, it can also help maintain a healthy weight, which is essential to preserving joint health.

Excess body weight stresses joints and increases wear and tear. Following a diet that is lower in fat and calories can help maintain or reduce body weight, preventing additional joint stress. For more information about healthy joints, read the fact sheet from the National Institute of Arthritis and Musculoskeletal and Skin Diseases. Also, Chapter 17 of the Warfighter Nutrition Guide, “The High Mileage Warrior Athlete,” provides more information on maintaining joint and bone health.

Women’s health and dietary supplements

Military Health System has designated October as Women’s Health Awareness month. Find out how dietary supplements play a role in a women’s life.

About half of all military personnel use some dietary supplements, and military women most commonly use weight-loss supplements. But is there a place for dietary supplements in enhancing women’s health? Dietary supplements, by definition, are intended to “supplement the diet” and can contain a dietary ingredient such as a vitamin, mineral, herb or other botanical, amino acid, or combinations of these and/or other substances or constituents intended to be consumed by mouth.

Active women may require more nutrients, but vitamin and mineral needs normally can be met by eating a variety of nutrient-rich foods. The Dietary Guidelines for Americans focus largely on the recommendation that nutrient-dense foods and beverages—such as fruits, vegetables, whole grains, low-fat dairy products, lean meats and poultry, eggs, nuts and seeds—can provide all the nutrients needed by most everyone. These recommendations are based on research that shows a varied, healthy diet lowers the risk of most diseases.

Some dietary supplements have been found to be beneficial for women’s health, such as folic acid, iron, and calcium. Folic acid, a B vitamin involved in the production of new cells in the body, has been shown to help prevent birth defects. Women who are thinking of becoming pregnant or are pregnant should take a supplement that includes 400 micrograms of folic acid per day. Fortified foods such as green, leafy vegetables, enriched whole grain breads, flour, pasta, rice, and most ready-to-eat cereals also contain folic acid. Adolescent girls, women of childbearing age, and especially pregnant women also need more iron, which is a mineral involved in the transport of oxygen in the body. Women in these groups should choose iron-rich foods, particularly red meat, fish, and poultry, as well as iron-fortified foods. When iron levels are low, symptoms may include feeling extra tired and weak, along with a decrease in immune function. A healthcare provider or dietitian can determine the need for supplementation if diet alone cannot maintain iron levels or for those who have iron-deficiency anemia. Calcium is an important mineral that helps maintain strong bones, healthy teeth, and proper functioning of the heart, muscles, and nerves. All women should strive to get their calcium from foods such as low-fat milk, yogurt, cheese, dark-green, leafy vegetables, and foods such as orange juice and soy milk that have been calcium-fortified. Those who may need more should discuss calcium supplement options with a dietitian, since there are many forms available and it is important to determine how much and which kind is suitable for your particular needs.

Some dietary supplement products marketed for weight loss are targeted toward women. Do they work? According to the Food and Drug Administration (FDA), some weight-loss supplements contain hidden prescription drug ingredients. For additional information, see Operation Supplement Safety’s (OPSS) “Are there any safe supplements to help me lose weight?” Furthermore, women looking to enhance their performance may turn to dietary supplement products. OPSS has additional resources for competitive athletes to search for particular products that are certified, as well as helpful red flags on what to avoid.

Some women’s nutrient needs differ from those of men, and they can vary over the course of a lifetime. From adolescent girls, to women of childbearing age, to women over 50, these needs change based on the demands of the physiological changes that occur in the body.  One thing is certain: A variety of nutritious food is really the spice of life and should be the basis for fueling all of life’s stages.

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