![]() ![]() People who have higher levels of vitamin D tend to have less severe metabolic syndrome and a lower risk of heart disease ( 13).Īdditionally, higher levels of vitamin D are linked to healthier blood vessels ( 14).Ī study in nearly 10,000 people found that those who got more vitamin D from supplements or diet - including fortified milk - had higher blood levels of the vitamin, less stiffness in their arteries, and lower blood pressure, triglyceride, and cholesterol levels ( 14). It includes high blood pressure, insulin resistance, excess abdominal weight, high triglycerides, and low HDL (good) cholesterol. May reduce heart disease riskĪ major risk factor for heart disease is a cluster of conditions known as metabolic syndrome. Studies that have compared vitamin D levels with disease risk suggest that having lower blood levels of the vitamin is linked to a higher risk of a wide range of chronic diseases, while having adequate or higher levels seems to result in a lower risk ( 13). It likewise helps reduce inflammation, which is thought to contribute to conditions like heart disease, diabetes, autoimmune diseases, and cancer ( 2). Vitamin D is needed for proper cell growth, nerve and muscle function, and a healthy immune system. Still, having higher levels of vitamin D is linked to important health benefits - and they extend beyond improved bone health. However, large studies don’t show that it helps prevent osteoporosis, which is characterized by a thinning of the bones, or bone fractures in older adults ( 11, 12). Drinking vitamin D milk can also help boost your vitamin D levels.ĭrinking milk that contains both calcium and vitamin D is recommended as a way to strengthen your bones and prevent rickets and osteomalacia ( 8). This vitamin is added because it works with the calcium in milk to strengthen your bones. Vitamin D milk is enhanced with vitamin D during processing. Prior to the fortification law, only 44% had optimal vitamin D levels ( 7, 10). Studies in Finland, where vitamin D milk has been mandatory since 2003, found that 91% of milk drinkers had vitamin D levels at or above 20 ng/ml, which is considered sufficient according to the Institute of Medicine ( 7, 10). The Food and Drug Administration (FDA) allows manufacturers to add up to 84 IU per 3.5 ounces (100 grams) of vitamin D3 to cow’s milk and 84 IU per 3.5 ounces (100 grams) of vitamin D2 to plant-based milk alternatives ( 9).ĭrinking vitamin D milk increases the amount of vitamin D people get and improves levels of vitamin D in the blood ( 5). The combination of calcium and vitamin D also helps prevent and treat osteomalacia, or soft bones, which accompanies rickets and can affect older adults ( 7, 8). ![]() These two nutrients work well together, as vitamin D aids calcium absorption into your bones, thus helping strengthen them. While milk doesn’t naturally contain vitamin D, it’s a good source of calcium. It has been added to cow’s milk since the 1930s when the practice was implemented as a public health initiative to reduce rickets, which causes poor bone development and deformities in children ( 6). In the United States, it’s not mandated, but most milk manufacturers add it voluntarily during milk processing ( 5). In some countries, including Canada and Sweden, vitamin D is added to cow’s milk by law. Taking a supplement and using fortified foods like vitamin D milk are good ways to increase your intake and blood levels of vitamin D. Other factors, such as having obesity or underweight, being physically inactive, and having certain genetic mutations, can also put you at risk of having lower vitamin D levels ( 4). People who live in northern latitudes where sunshine is limited in the winter, as well as those who don’t spend much time in the sun, often have lower blood levels of vitamin D ( 2, 3). In fact, one study found that 25% of Canadians don’t meet their needs through diet alone ( 3). Many people don’t meet the recommendations for vitamin D. Instead, most vitamin D is made in your body when your skin is exposed to the sun ( 2). With the exception of fatty fish like salmon, which contains 447 IU in a 3-ounce (85-gram) serving, very few foods are good sources of vitamin D. For children aged 1–3, it’s 600 IU or 15 mcg per day ( 1). The recommended Daily Value (DV) for vitamin D is 800 international units (IU), or 20 mcg per day for all adults and children over 4 years old. ![]()
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