Why Do We Need Vitamin D?

Why Do We Need Vitamin D?

Vitamin D, also known as the sunshine vitamin, can be produced in the body through sun exposure or consumed in food or supplements.

However, it is estimated that vitamin D produced by the sun has a half-life of only two weeks, meaning that stores can easily run low, especially in winter. Recent studies have suggested that up to 50% of adults and children worldwide are vitamin D deficient.

Adequate vitamin D intake is important for the regulation of calcium and phosphorus absorption, maintenance of healthy bones and teeth, and is suggested to supply a protective effect in connection with a number of today’s health issues. For example, if your body does not get enough vitamin D, you are at risk of developing bone abnormalities such as soft bones (osteomalacia) or fragile bones (osteoporosis).
Research has also shown that vitamin D may play an important role in regulating mood and supporting a sense of well-being. In some studies, scientists found that people with depression who received vitamin D supplements noticed an improvement in their symptoms. (1)(2)

How much vitamin D does a healthy adult typically require each day?

According to the Mayo Clinic and the Institute of Medicine, the recommended daily allowance (RDA) is 600 IU for those 1-70 years of age. The good news is that each and every delicious ounce of Trѐvo contains 400 IU of vitamin D. So by enjoying two ounces daily, you can rest assured that you are giving your body all the vitamin D it needs to function at its very optimum best.


  • Jorde, M. Sneve, Y. Figenschau, J. Svartberg, K. Waterloo; Effects of vitamin D supplementation on symptoms of depression in overweight and obese subjects: randomized double blind trial; Journal of Internal Medicine; 11 September 2008
  • Jong Hyun Jhee, Hyoungnae Kim, Seohyun Park, Hae-Ryong Yun, Su-Young Jung, Youn Kyung Kee, Chang-Yun Yoon, Jung Tak Park, Seung Hyeok Han, Shin-Wook Kang, Tae-Hyun Yoo, Abelardo I Aguilera, Vitamin D deficiency is significantly associated with depression in patients with chronic kidney disease, PLOS ONE, 2017, 12, 2, e0171009

Vitamin D has multiple roles in the body, helping to:

  • Maintain the health of bones and teeth
  • Support the health of the immune system, brain and nervous system
  • Regulate insulin levels and support healthy blood sugar levels
  • Support lung function and cardiovascular health


What other benefits might vitamin D offer?

According to a study presented at the American College of Cardiology 65th Annual Scientific Session & Expo in Chicago, IL, daily supplementation with vitamin D may improve heart function. According to Dr. Klaus Witte of the University of Leeds School of Medicine in the UK, and his colleagues, a daily vitamin D supplement could be beneficial for patients with heart health issues.