Sun Exposure Benefits:

Sun exposure has the potential for harm, yet there are also a number of sun exposure benefits. One must use care, understanding that the consequences of sun avoidance are potentially worse. 

Vitamin D and Longevity

A recent study assessed the estimated impact of increasing vitamin D levels from 54nmol to 110nmol/l and found a massive reduction in mortality levels. The reduced risk of cardiovascular disease, cancer and other infections achieved by increasing vitamin D levels resulted in an average life expansion of 2 years. The study concluded “Increasing serum 25(OH)D levels is the most cost-effective way to reduce global mortality rates, as the cost of vitamin D is very low and there are few adverse effects from oral intake and/or frequent moderate UVB irradiance with sufficient body surface area exposed.” [1]

Sun exposure and disease prevention

A review of 16 large international studies exposed a ‘strong inverse correlation’ between vitamin D/ solar UV-B. “ This review consistently found strong inverse correlations with solar UVB for 15 types of cancer: bladder, breast, cervical, colon, endometrial, esophageal, gastric, lung, ovarian, pancreatic, rectal, renal, and vulvar cancer; and Hodgkin’s and non-Hodgkin’s lymphoma. Weaker evidence exists for nine other types of cancer: brain, gallbladder, laryngeal, oral/pharyngeal, prostate, and thyroid cancer; leukemia; melanoma; and multiple myeloma.”2

sun exposure - benefits of vitamin d

Sunlight deficiency linked to depression and cognitive impairment

There is a strong link between sunlight deficiency and reduced cognitive function. One study compared the mental alertness of participants who had been exposed to either natural sunlight or artificial light. The group exposed to natural light performed superiorly compared to the individuals exposed to artificial light.3Another group of researchers assessed the impact of sunlight exposure on cognitive function of depressed individuals and concluded “ The study found an association between decreased sun exposure and increased probability of cognitive impairment”4

Sun exposure linked to fat loss

The institute of dermatological sciences in at Seoul National University found that sunlight exposure has a positive effect on fat metabolism.5
Sunlight exposure and reduced rates of Multiple Sclerosis
Sun exposure reduces the risk of developing multiple sclerosis. Researchers compared the lifestyles, environmental exposures and past medical history of 792 Iranians and found that lack of sunlight exposure was the biggest single risk factor associated with developing MS.6A study compared the sun exposure patterns of Australian mothers that gave birth in May-June to mothers that gave birth in Nov-Dec. They found that the children of mothers that had less sunlight exposure were more likely to develop multiple sclerosis.7
Peptide Clinics has a tanning peptide which will provide an effective way to increase your Melanin production. Melanin is the dark coloured pigment that protects cells from sun damage.
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References
1 An estimate of the global reduction in mortality rates through doubling vitamin D levels.
Grant WB.
Eur J Clin Nutr. 2011 Sep;65(9):1016-26. doi: 10.1038/ejcn.2011.68. Epub 2011 Jul 6. Review.

2Ecological studies of the UVB-vitamin D-cancer hypothesis.
Grant WB.
Anticancer Res. 2012 Jan;32(1):223-36. Review.

3Effect of sunlight exposure on cognitive function among depressed and non-depressed participants: a REGARDS cross-sectional study.
Kent ST, McClure LA, Crosson WL, Arnett DK, Wadley VG, Sathiakumar N.
Environ Health. 2009 Jul 28;8:34. doi: 10.1186/1476-069X-8-34.

4Effect of sunlight exposure on cognitive function among depressed and non-depressed participants: a REGARDS cross-sectional study.
Kent ST, McClure LA, Crosson WL, Arnett DK, Wadley VG, Sathiakumar N.
Environ Health. 2009 Jul 28;8:34. doi: 10.1186/1476-069X-8-34.

5UV modulation of subcutaneous fat metabolism.
Kim EJ, Kim YK, Kim JE, Kim S, Kim MK, Park CH, Chung JH.
J Invest Dermatol. 2011 Aug;131(8):1720-6. doi: 10.1038/jid.2011.106. Epub 2011 May 12.

6A case-control study of risk factors for multiple sclerosis in Iran.
Alonso A, Cook SD, Maghzi AH, Divani AA.
Mult Scler. 2011 May;17(5):550-5. doi: 10.1177/1352458510397685. Epub 2011 Feb 15.

7Low maternal exposure to ultraviolet radiation in pregnancy, month of birth, and risk of multiple sclerosis in offspring: longitudinal analysis.
Staples J, Ponsonby AL, Lim L.
BMJ. 2010 Apr 29;340:c1640. doi: 10.1136/bmj.c1640.