2200X more problems from no UVB than too much UVB - WHO 2006

World Health Organization report from 2006

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optimal = Not too much and not to little UVB

Summary: Daily Adjusted Life Years

If could get less UVB - 1.5 million DALYs could have been avoided

If get no UVB 3,304 million DALYs would have been lost due to vitamin D deficiency diseases – rickets, osteomalacia and osteoporosis.

= 2200X more disability if have no UVB than if have too much UVB

What the above chart should look like using the WHO data

Figure 2.1 Schematic diagram of the relation between ultraviolet radiation (UVR) exposure and the burden of disease

A = Vitamin D insufficiency

B = Optimal

C= Skin cancers, eye disease

Horizontal line = Personal exposure to UVR relative to skin type

Caption

Points A and C represent inappropriate UVR exposure. Fair-skinned populations in Australia with high outdoor UVR exposure typify point A.

Point C represents people with insufficient UVR exposure, whose dietary vitamin D intake will also be important in determining their vitamin D status.

Point B represents optimal UVR exposure: a person with careful titration of correct UVR dose for skin type.

    from: Lucas, RM and Ponsonby, AL. Ultraviolet radiation and health: friend and foe. MJA 177:594-598

Diseases with increasing incidence where UVR exposure/vitamin D is inadequate:

Autoimmune diseases : Multiple sclerosis Type 1 diabetes Rheumatoid arthritis

Cancers : Prostate Breast cancre Colorectal cancer Ovary cancer Non-Hodgkin lymphoma

Psychiatric disorders : Seasonal affective disorder Mood disorders Schizophrenia

Diseases with increasing incidence where UVR exposure is excessive

Acute macular degeneration

Posterior subcapsular cataract

Nuclear cataract

Ocular melanoma

Diseases CAUSED by UVB = too much

The WHO paper states that the 2200X did not even consider DALYs due to

cancers of the colon, breast, prostate, ovary, Hodgkin and non-Hodgkin lymphoma, etc.

autoimmune diseases such as type 1 diabetes and rheumatoid arthritis;

cardiovascular diseases such as hypertension, acute stroke and coronary artery disease;

endocrine disorders such as type 2 diabetes;

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See also Vitamin D Life

• Overview UV and Vitamin D

• Which Is Worse - Avoiding Sunlight or Vitamin D Deficiency – April 2019

• Low UVB (thus low Vitamin D) is linked to many diseases – Grant Jan 2016

• Less Solar Radiation was associated with more Cancer - 1941

• Is too much vitamin D bad – possible causes and cures

• Even if a J curve exists, it is 50X better to give vitamin D than not give it – May 2013

  •     Article Title: When Is a U-Curve Actually a J-Curve? Is It Really Too Much of a Good Thing?

• All items in UV and D category items

• UV overview at WHO -with infographic

Image from above reference

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