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Vitamin D

What is Vitamin D? ⁣

– There are 2 sources of Vitamin D – Sun and Dietary ( this also includes supplementation ) ⁣
– There are 2 forms of Vitamin D, cholecalciferol (D3) and ergocalciferol (D2). ⁣

Cholecalciferol (vitamin D3) is formed through the action of ultraviolet B (UVB) radiation (wavelength, 290–315 nm) on 7-dehydrocholesterol in the skin. This is the main determinant of vitamin D status, as most adults are unlikely to obtain more than 5%–10% of their vitamin D requirement from dietary sources. ⁣

Both forms of vitamin D are transported to the liver and metabolised to 25-OHD. This is the major circulating form and the metabolite routinely used to assess overall vitamin D status. ⁣

What are your vitamin D levels? ⁣

I personally like to see clients levels above 80nmol/L. Even higher in the lead up to winter! ⁣

Why we need Vitamin D? ⁣

Vitamin D has multiple functions in the body and make it very very important. There has been a huge increase in the amount of people deficient and this is also why so many functional practitioners like to see good levels year round. ⁣

Some of these functions are:⁣

☀️ Bone Health⁣
☀️ Immune Health ⁣
☀️ Cardiovascular Health ⁣
☀️ Helps Insulin secretion ⁣
☀️ Regulation of cell cycle⁣


⁣Sunlight and Vitamin D ⁣

A major source of vitamin D for most humans is synthesized from the exposure of the skin to sunlight typically between 10am and 3pm in the spring, summer, and Autumn. ⁣

Vitamin D produced in the skin may last at least twice as long in the blood compared with ingested vitamin D.⁣

When an adult wearing a bathing suit is exposed to one minimal erythemal dose (MED) of UV radiation which is a slight pinkness to the skin 24 h after exposure, the amount of vitamin D produced is equivalent to ingesting between 10,000 and 25,000 IU.⁣

So what’s this mean? ⁣
Skip the chemical laden sunscreen and opt for a more natural one or limit your exposure to your 1 MED, keep your body’s optimal nutrition and low toxin level and inflammation low to protect you from sun damage and optimise vitamin absorption. ⁣

What effects absorption of Vitamin D from both Sun and Supplement? ⁣

☀️Skin colour and density of melanocytes and melanin ( these inhibit D3 biosynthesis) ⁣
☀️Age⁣
☀️Sunscreen ⁣
☀️Time in the sun, time of day and season.⁣
☀️The latitude you live at.⁣
☀️Conditions such as Crohns, Celiac, Chronic Pancreatitis and general poor gut function and absorption. ⁣
☀️Adequate fat intake and fat soluble vitamin consumption and absorption. ⁣

What can help your response to the sun? ⁣
☀️Safe exposure over time – Not too much too soon.⁣
☀️Healthy diet and good nutrient and mineral levels. ⁣
☀️Safe amount of time in the Sun. Smart Exposure. ⁣
☀️Astaxanthin is a red carotenoid found in shrimp, crab, salmon and microalgae. It has been shown to have an impact on the epidermis acting as a antioxidant to protect the skin. ⁣

Sun and grounding are the most basic and essential things for good health. ⁣

Perth based Functional Naturopath and Lecturer, Jodi Duval discusses health tips and tricks for you and your family. Giving you the latest information to get you to your optimal health and empower you with the knowledge and passion to do so. Jodi will also be featuring guests from a variety of different areas of the health and wellness industry. Stay tuned and have fun!

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