Vitamin D Deficiency Questionnaire

Vitamin D may influence serotonin production by regulating the expression of the enzyme tryptophan hydroxylase 2 (TPH2) in the brain. When vitamin D binds to its receptor (VDR), it can promote transcription of the TPH2 gene, thereby increasing serotonin synthesis.

 

Vitamin D may influence serotonin production by regulating the expression of the enzyme tryptophan hydroxylase 2 (TPH2) in the brain. When vitamin D binds to its receptor (VDR), it can promote transcription of the TPH2 gene, thereby increasing serotonin synthesis.

 

1. Do you rarely get sun exposure? Yes or No

 

2. Do you use sunscreen? Yes or No

 

3. Do you have dark skin? Yes or No

The darker your skin, the less vitamin D you make from sunlight exposure.

 

4. Have you been diagnosed with Crohn's disease, ulcerative colitis or celiac disease? Yes or No

This is because the vitamin D you consume is absorbed in the intestine along with fat, so if your body has trouble absorbing fat, it will also have trouble absorbing vitamin D.

 

5. Do you have SNPs in the VDR genes? Yes or No

 

If you answered YES to most of the questions, ask your doctor or nutritionist to measure your vitamin D levels. 

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