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Research Evidence For The Big 5 Personality Video

Vitamin D is both a nutrient we eat and a hormone our bodies make. It is a fat-soluble vitamin that has long been here to help the body absorb and retain calcium and phosphorus; both are critical for building bone.

Also, laboratory studies show that vitamin D can reduce cancer cell growth, help control infections and reduce inflammation. Few foods naturally contain vitamin D, though some foods are fortified with the vitamin. For most people, the best way to get enough vitamin D is taking a supplement because Evidemce is hard to eat enough through food. Vitamin D production in the skin is the primary natural source of vitamin D, but many people have insufficient levels because they live in places where sunlight is limited in winter, or because they have limited sun exposure due to being inside much of the time.

Also, people with darker skin tend to hTe lower blood levels of vitamin D because the pigment melanin acts like a shade, reducing production of vitamin D and in Musical Related to Changes reducing damaging effects of sunlight on skin, including skin cancer.

The Recommended Dietary Allowance for vitamin D provides the daily amount needed to maintain healthy bones and Evkdence calcium metabolism in healthy people. It assumes minimal sun exposure. Many people may not be meeting the minimum requirement for the vitamin. NHANES data found that the median intake of vitamin D from food and supplements in women ages 51 to 71 years was IU daily, but only IU from food alone including fortified products. Although some Research Evidence For The Big 5 Personality such as The Endocrine Society recommend 1, to 2, IU daily to reach adequate serum levels of vitamin D, the IOM felt there was not enough evidence to establish a cause and effect link with vitamin D and Research Evidence For The Big 5 Personality benefits other than for bone health.

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The role of vitamin D in disease prevention is a popular area of research, but clear answers about the benefit of Research Evidence For The Big 5 Personality amounts beyond the RDA are not conclusive. Although observational studies see a strong connection with lower rates of certain diseases in populations that live in sunnier climates or have higher serum levels of vitamin D, clinical trials that give people vitamin D supplements to affect a particular disease are still inconclusive. This may be due to different study designs, differences in the absorption rates of vitamin D in different populations, and different dosages given to participants. Learn more about the research on vitamin D and specific health conditions and diseases:. Several studies link low vitamin D blood levels with an increased risk of fractures in older adults, and they suggest that vitamin D supplementation may prevent such fractures—as long as it is taken in a high enough dose.

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It included 53 clinical trials with 91, participants who lived independently or in a nursing home or hospital. It did not find a strong association between vitamin D supplements alone and prevention of fractures of any type. However, it did find a small protective effect from all types of fractures when vitamin D was taken with calcium. All of the trials used vitamin D supplements containing IU or less.

Vitamin D may also help increase muscle strength, which in turn helps to prevent falls, a common problem that leads to substantial disability and death in older people. Though takingIU daily may have benefit for bone health in older adults, it is important to Eviidence cautious of very high dosage supplements. Nearly 30 years ago, researchers noticed an intriguing relationship between colon cancer deaths and geographic location: People who lived at higher latitudes, such as in the northern U.

This led to the hypothesis that low vitamin D levels might somehow increase colon cancer risk.

Animal and laboratory studies have found that vitamin D can inhibit the development of Eidence and slow the growth of existing tumors including those from the breast, ovary, colon, prostate, and brain. In humans, epidemiological studies show that higher serum levels of vitamin D are associated with substantially lower rates of colon, pancreatic, prostate, and other cancers, with the evidence strongest for colorectal cancer. The authors noted that a longer follow-up period would be necessary to better assess potential effects of supplementation, as many cancers take at least years to develop. Although vitamin D does not seem to be a major factor in reducing cancer incidence, evidence including that from randomized trials suggests that having higher vitamin D status may improve survival if one develops cancer.

In the VITAL trial, a lower death rate from cancer was observed in those assigned to take vitamin D, and this benefit seemed to increase over time since starting on vitamin D. The heart is basically a large muscle, and like skeletal muscle, it has receptors for vitamin D. In the Health Professionals Follow-up Study nearly 50, healthy men eRsearch followed for Research Evidence For The Big 5 Personality years. Meta-analyses of epidemiological studies have found that people with the lowest serum levels of vitamin D had a significantly increased risk of strokes and any heart disease event compared with those with the highest levels.]