Author: Deborah Mitchell – December 12, 2009
The best way to get enough vitamin D is through food, right? No, according to the latest Harvard Heart Letter, which says supplements are the best way for Americans to raise their bodys level of vitamin D, which in most cases too low right this moment.
In fact, the Harvard report notes that at least one-third of Americans and 75 percent of people who have cardiovascular disease are vitamin D deficient. To make that determination, the report states that deficient is defined as less than 20 nanograms of 25-hydroxyvitamin D per milliliter of blood (ng/mL); insufficient is from 20 to 30 ng/mL, and sufficient as any level greater than 30 ng/mL. The Vitamin D Council, however, states that everyone should maintain a level of 50 to 80 ng/mL, which means that according to their standards, a great many more people would be classified as being vitamin D deficient.
Vitamin D deficiency is a serious problem, as this vitamin plays a critical role in bone strength (including osteoporosis and fractures associated with falls), coronary artery disease, high blood pressure, heart failure, muscle pain, infection, some types of cancer, type 2 diabetes, depression, asthma, and memory loss.
Consumers are used to hearing that the best way to get their vitamins is through the food they eat, and in nearly every case this is true. Eating a well-balanced diet that includes nutrient-rich foods such as fresh fruits and vegetables, whole grains and cereals, legumes and beans, and low-fat dairy foods can meet much of your nutritional needs.
But this scenario does not hold true for vitamin D for two reasons. One, it is difficult to get a sufficient amount of vitamin D through food alone. Only a few foods, such as salmon, fortified cereals, milk, and tuna, provide more than 100 IU per serving, and Harvard recommends people get at least eight times that amount daily. Two, the best way to get this vitaminexposure to sunlightis not practiced by most people enough of the time. Therefore, Harvard recommends supplementation as the best approach.