Vitamin D actual is not a vitamin but prohormone. There are 2 forms of vitamin D, vitamin D2 & vitamin D3. Vitamin D3 also known as Cholecalciferol which is synthesized when UV-B rays from the sun hits the skin and from a very few animal based food sources. On the other hand, Vitamin D2 also known as Ergocalciferol is plant based and is produced my mushroom that are irradiated with UV-B.
The recent research has shown that vitamin D3 is more potent vitamin D2. Its effects stays longer in our body.
In this video, I’ll be discussing:
1. How Vitamin D is used in the Body?
2. 7 Possible Signs of vitamin D deficiency
3. Diseases associated with vitamin D deficiency
4. How much vitamin D to take
5. Vitamin D Source
6. Factors that adversely affect the absorption of vitamin D
Bone related diseases are Rickets and Osteomalacia
To learn more about rickets and osteomalacia, visit:
Extra skeletal diseases associated with vitamin d deficiency:
1. Cancer such as Bladder, breast, colon, etc.
2. Autoimmune disease such as MS
3. Neurologic & Psychiatric disease such as dementia, depression & schizophrenia
4. Infertility
5. Cardiovascular Disease
6. TB (the photo for healing TB patients outside the hospital) that they were taking patience on their beds outdoor for sunlight and fresh.
7. Dermatologic disease such as Eczema
Respiratory disease such as Asthma & Influenza
Factors that adversely affect the absorption of vitamin D are:
1. Sunscreen. It block the UVB radiations that are essential for the production of vitamin D by the skin.
2. Melanin Content of your skin.
3. Age.
4. Your Body Fat Percentage.
References for vitamin D sources.
National Institutes of Health
Health.gov
Endocrine society
Vitamin D intake detailed table
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• “salmon” by Andrea Pokrzywinski is licensed with CC BY 2.0. To view a copy of this license, visit
• “Minami-maguro (Southern Bluefin tuna) – Tsukiji market, Tokyo” by Dimitry B is licensed with CC BY 2.0. To view a copy of this license, visit
• “Venus Approaching the Sun” by NASA Goddard Photo and Video is licensed with CC BY 2.0. To view a copy of this license, visit
• “File:Blausen 0533 Parathyroid adenoma.png” by BruceBlaus. When using this image in external sources it can be cited as: Blausen.com staff (2014). ‘Medical gallery of Blausen Medical 2014’. WikiJournal of Medicine 1 (2). DOI:10.15347/wjm/2014.010. ISSN 2002-4436. is licensed with CC BY 3.0. To view a copy of this license, visit
• “File:Great deformity of the legs due to rickets Wellcome L0062562.jpg” is licensed with CC BY 4.0. To view a copy of this license, visit
• “New Orleans Milk Cart Esplanade Ave” by Infrogmation is licensed with CC BY 2.0. To view a copy of this license, visit
• “File:Severe Osteomalacia Related to Long-Term Intravenous Drug Abuse P04 radiograph of distal femurs.jpg” by Leslie Gamache, Mark R. Burge is licensed with CC BY 3.0. To view a copy of this license, visit
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• “Internal Organs of the Human Body from The Household Physician, 1905” by crackdog is licensed with CC BY 2.0. To view a copy of this license, visit
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