Vitamin D is a vitamin that is synthesized by the body. After the skin is exposed to UVB rays from sunlight, especially sunlight between 7-10 a.m., vitamin D is important to the body in many different ways. Vitamin D is found naturally from UV sunlight (UV). and fatty foods from fish, cod liver oil, liver, oatmeal, mushrooms, egg yolks, and cheese, or taking dietary supplements that contain vitamin D as an ingredient.
90% percent of Thai people were found to be deficient in Vitamin D (Vitamin D), even though Thailand has sunshine in every season. But Thai people's behavior is to protect themselves from the sun by applying sunscreen. and avoid doing outdoor activities that will be exposed to the sun This is the reason why Thai people have vitamin D deficiency.
How important is Vitamin D?
- Helps the body absorb calcium better.
- Helps improve hormone synthesis
- Helps prevent autoimmune disease (SLE)
- Helps prevent osteoporosis
- Helps control blood sugar levels
What causes vitamin D deficiency?
Vegetarians and those who do not eat fish often do not get enough vitamin D each day.
Both from avoiding exposure to sunlight and from using sunscreen with ingredients (SPF) that help reduce the absorption of sunlight into the skin.
Diseases that reduce vitamin D absorption include celiac disease, Crohn's disease, etc. In addition, surgery to reduce the size of the stomach or small intestine can also reduce vitamin D absorption.
The skin's ability to produce vitamin D and the kidneys' ability to convert vitamin D to a usable form begin to decline.
Resulting in a decrease in the skin's ability to synthesize vitamin D from sunlight.
Preparation before blood draw
- It can be tested without fasting or refraining from food and water.
- If you have a chronic disease and take regular medication, please inform the staff for health advice.
- If taking birth control pills or using hormones Should report the history of the examination.
