Health, Vitamins

Sunlight & Vitamin D

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Sunlight & Vitamin D


The amount of sunlight needed for sufficient vitamin D production depends on various factors, including skin type, geographical location, time of day, and the season. Vitamin D is produced in the skin when it is exposed to ultraviolet B (UVB) radiation from the sun. Here are some general guidelines:


  1. Duration of Sun Exposure:
    • The time needed for sufficient vitamin D synthesis varies, but it’s often recommended to get about 10–30 minutes of midday sunlight exposure at least twice a week. The duration depends on factors like skin tone, age, and location.
  2. Skin Type:
    • People with darker skin produce less vitamin D from sunlight compared to those with lighter skin because melanin, the pigment responsible for skin color, reduces the skin’s ability to produce vitamin D.
  3. Geographical Location:
    • Sunlight is more effective for vitamin D synthesis when closer to the equator. In higher latitudes, especially during the winter months, sunlight may be less effective for vitamin D production.
  4. Time of Day:
    • Sunlight exposure is most effective for vitamin D synthesis when the sun is higher in the sky. Midday sun (around noon) is generally more efficient for UVB exposure.
  5. Season:
    • Sunlight is more effective during the summer months due to the sun’s angle and increased UVB radiation.
  6. Clothing and Sunscreen:
    • The use of sunscreen, clothing that covers most of the body, or spending too much time indoors can limit the amount of UVB reaching the skin and, consequently, reduce vitamin D synthesis.
  7. Age:
    • Older individuals may have reduced skin production of vitamin D compared to younger individuals.


To enhance vitamin D absorption through sunlight, it’s important to expose a larger area of skin, such as the arms, legs, and back. However, it’s crucial to balance the benefits of sunlight exposure for vitamin D synthesis with the potential risks of excessive sun exposure, including skin damage and an increased risk of skin cancer.

If obtaining sufficient vitamin D from sunlight is challenging, dietary sources and supplements may be considered. It’s advisable to consult with healthcare professionals for personalized recommendations based on individual factors and health conditions.



We hope you found the information provided by Thera-Mineral valuable and insightful. At Thera-Mineral, we are dedicated to offering high-quality supplements to support your health and well-being.

If you have any further questions, need additional information, or would like to explore our range of supplements, please don’t hesitate to reach out. You can contact us at our office located at 25216 Grogan’s Park Dr. Suite A, The Woodlands, TX 77380. Our friendly team is ready to assist you by phone at 855-472-2569 or via email at

For your convenience, most supplements are available on our website, However, if you don’t find a specific product on the site, our dedicated staff can help you place an order, and we’ll ensure it’s delivered to your place of choice.

We appreciate your trust in Thera-Mineral, and we look forward to being a reliable partner on your journey to optimal health. Thank you again for being part of our community!