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Vitamin D is often referred to as the sunshine vitamin. When the skin is exposed to sunlight, this nutrient is synthesized in the body. Vitamin D can also be found in certain foods like oily fish, fortified breakfast cereals, beef, mushrooms, and eggs. Despite the fact that vitamin D can be found in so many places, a 2011 study found that 41.6 percent of adults in the U.S. are still lacking in this crucial vitamin. There are several risk factors for a vitamin D deficiency, including: • A limited exposure to sunlight. This is especially true for people who live in northern latitudes, wear protective clothing, or stay indoors often. • Dark skin. The skin darkening pigment melanin can reduce the body’s ability to turn sunlight into vitamin D. • Obesity. For reasons that are still unclear, those with a BMI of over 30 often have lower levels of vitamin D in their blood. • Digestive issues. People with Crohn’s disease, cystic fibrosis, and celiac disease have a difficult time absorbing vitamin D from food intake. There are many people who have a vitamin D deficiency and are completely unaware of it. Some of the signs of vitamin D deficiency are subtle and include: • Frequent colds or other illnesses • Fatigue • Pain in the bones or lower back • Hair loss • Depression • Muscle pain If left untreated, a long-term deficiency in vitamin D can lead to serious problems such as: • Breathing problems (such as asthma) • Seasonal Affective Disorder (SAD) • The weakening of bones and osteoporosis • Cognitive impairment in older adults • Increased risk of heart disease • Certain cancers Some of the most recent studies have found vitamin D to be effective in preventing liver, bowel, and breast cancer. Other studies show that it can reduce the buildup of scar tissue on the heart after a heart attack, reducing the risk for another. People with a deficiency can take private label vitamins to increase vitamin D levels in the blood and reduce the risk of long-term effects. With so much research showing the importance of having adequate amounts of vitamin D in the body, it stands to reason why this is one of the most common private label vitamins offered today.
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Studija naučnika s University of California iz San Diega pokazala je da kod žena sa potvrđenom visokom razinom vitamina D u organizmu, postoji i do 50% manji rizik obolijevanja od raka dojke. Čak je i blago povišena razina vitamina D bila povezana s 10%-tnim smanjenjem rizika za pojavu bolesti, utvrđeno je u istraživanju u kojem je sudjelovalo više od 120000 ispitanica. Vitamin D se u organizmu proizvodi nakon izloženosti sunčevoj svjetlosti, a prisutan je i u ribi, posebno onim vrstama koje obiluju uljem. Viši unos vitamina D se posebno preporučuje starijim osobama. Naučnici upozoravaju kako pretjerana izloženost suncu može imati negativan utjecaj na zdravlje te dodaju kako previsoka razina vitamina D u organizmu može dovesti do opasnog povećanja količine kalcija. Dakle pazite da ne pretjerujete, te održavajte optimalnu razinu vitamina D u organizmu.