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 Faculty of Health Sciences - sbf@gelisim.edu.tr

Nutrition And Dietetics (English)








 November 2nd: World Vitamin D Day - A Time to Discover the Health Benefits of Sunshine!


Münevver Gaye Aybey, Lecturer at Istanbul Gelisim University’s Faculty of Health Sciences, Department of Nutrition and Dietetics, provided insights on the significance of Vitamin D and its impact on our health on this World Vitamin D Day.


Celebrated annually on November 2nd, World Vitamin D Day aims to raise awareness about vitamin D deficiency as we approach the winter months. This essential nutrient plays a crucial role in strengthening the immune system, supporting bone health, and enhancing our mood. Yet, a large part of the population does not get enough of this vital vitamin. Limited sunlight during the winter months makes vitamin D deficiency an even more prevalent issue.

Research in Türkiye shows that the prevalence of vitamin D deficiency ranges between 50% and 80%. This deficiency, identified through serum 25-hydroxyvitamin D levels, is typically measured at values below 20 ng/mL, affecting not only bone health but also weakening the immune system. Especially in the northern hemisphere, the lack of sufficient vitamin D intake during winter months can lower resistance to illnesses.

Vitamin D can be obtained through sunlight as well as from certain foods. While sources are limited, vitamin D can be found in cod liver oil, fatty fish, egg yolks, and certain plant-based foods. Supplements recommended by a doctor can also be taken when necessary. Exposing oneself to the sun for 10-15 minutes in the morning can naturally boost the body’s vitamin D production and help reduce the risk of deficiency.

This day serves as a reminder of the symptoms and health impacts of vitamin D deficiency. Persistent fatigue, muscle and bone pain, frequent infections, and depressive symptoms may indicate a lack of vitamin D. If these symptoms continue, checking vitamin D levels becomes essential.

World Vitamin D Day emphasizes the importance of getting sunlight, balanced nutrition, and taking precautions when necessary for a healthy life. Through this special day, we can take small yet impactful steps to increase our vitamin D awareness and move towards a healthier lifestyle.