Vitamin D

Routine blood work can show a deficiency in vitamin D, which is a very common problem. Often times, we lack adequate exposure to natural sunlight which plays a crucial role in maintaining proper vitamin D levels. Another cause of deficiency is an abnormal digestive process, like malabsorption caused by CF.

Deficiency of vitamin D can cause  hyperparathyroidism, osteoporosis, and osteomalacia. It can also negatively impact cell growth, bone growth, hormone regulation, affect the nervous and immune systems.

Sunlight is important in maintaining normal  levels because the sun synthesizes vitamin D from natural UV rays. It's converted to an active form by the kidneys and liver. About 10-15 minutes of sunlight is enough to absorb a daily dose.

Vitamin D enhances the immune system's functioning, aids in strengthening muscles, teeth, and bones, and facilitates the absorption of other vitamins.

The CF Clinic in Dallas requests labs (blood work) every visit. My vitamin D levels have always been low, despite taking a supplement daily.

Vitamin D enriched foods include:
(IU- International Units)

1 lg egg- 44 IU
raw white mushrooms- 164IU
1/2 fillet sockeye salmon- 1,400IU
camembert cheese- 44IU
1c of whole milk 124 IU 
 4 pieces of sushi 14 IU 
1 serving of tofu 157 IU 
1 serving of canned salmon 547 IU
1 packet of oatmeal 154 IU
1 serving canned tuna 234 IU 
1 c vanilla yogurt 122 IU
1 serving swordfish 566 IU

Always check with your doctor before you make any changes in your diet or the vitamins you take. While you don't want to be deficient, you don't want to have an overload either.


NIH

Always,

B.