Hur påverkar D-vitamin brist oss som bor i Skandinavien?

Flera studier har publicerats nyligen som tittar närmare på hur brist på vitamin D gör oss känsligare för att utveckla allergi, astma eller atopiskt eksem. I Skandinavien är risk för D vitamin brist ovanligt hög på grund av främst latituden sedan den långa mörka vintern. Brist på D vitamin är också kopplat till en del autoimmuna sjukdomar som förekommer oftare i norden. Tillskott under vintern har rekommenderats för att minska risk för influensa samt andra kroniska sjukdomar. De som bor i Skandinavien behöver tillskott under höst, vinter och vår. Vitamin D Council forskar kring D vitamin och publicerar råd och information i ett brev alla har tillgång till via vitamindcouncil.org.

The Vitamin D Council is a nonprofit organization  founded by a Doctor of Medicine concerned about the increasing deficiency of vitamin D and the consequences associated with it. The goal is to educate patients, families, doctors and health professionals on vitamin D and safe, sensible sun exposure to improve the quality and longevity of their lives.

Vitamin D deficiency is closely linked to how your immune system handles allergies. While it may not create an allergy out of thin air, it acts like a volume knob—when your Vitamin D levels are low, the “volume” on your allergic responses is often turned way up.

Here is how Vitamin D deficiency affects the way you experience allergies:

1. It Weakens Your “Immune Brake”

Vitamin D is essential for the production of Regulatory T-cells (Tregs). Think of these as the peacekeepers of your immune system. Their job is to tell your body, “That’s just an apple, not a threat—calm down.”

  • When deficient: You have fewer of these peacekeepers, making your immune system more likely to overreact to harmless proteins (like birch pollen or oat avenin).

2. It Compromises Your Physical Barriers

Vitamin D helps maintain the “tight junctions” in your gut lining and skin.

  • When deficient: These barriers can become “leaky.” This allows allergens to pass through more easily and reach your immune cells, which can trigger or worsen food sensitivities.

3. Increased Severity of Symptoms

Research consistently shows a correlation between low Vitamin D and more intense allergy symptoms:

  • Seasonal Allergies: People with low Vitamin D often report more severe hay fever, congestion, and itchy eyes during pollen season.
  • Food Allergies: Studies have found that infants with Vitamin D deficiency are significantly more likely to have multiple food allergies (like peanut or egg) compared to those with adequate levels.
  • Eczema & Asthma: Deficiency is strongly linked to more frequent asthma attacks and harder-to-manage skin inflammation.

4. The “Latitude” Connection

Interestingly, researchers noticed that food allergies and hay fever are more common in regions further from the equator (where there is less intense sunlight). This “Vitamin D Hypothesis” suggests that lower UV exposure leads to lower Vitamin D, which in turn leads to higher rates of allergic sensitization.

Ni som inte tål mjölkprodukter har högre risk att drabbas av både D-vitamin och kalciumbrist, vilket gör det ännu viktigare för er med tillskott. Här är en länk till mjölkfri och soyfri alternativ Sammanfattning mjölk produkter och mjölkfria alternativ