Is the Sun a permanently UV for these rays also has many advantages in return damage remains the question whether the benefits of sun exposure outweighs the damage or vice versa and what are the means of prevention for the benefit of human and not prejudiced? Benefits of sunlight: · Scientific studies have shown that sunlight is necessary for vitamin d excretion from the body. This vitamin is responsible for the strength and integrity of bones – and vitamin d deficiency leads to rickets disease in children as in adults, vitamin d deficiency leads to osteoporosis, or are they causing recurrent fractures. · Recent studies have revealed that vitamin d plays a protective role in protection against heart disease and clots of blood pressure and found that exposure to sunlight and vitamin d reduce the rate of deaths from heart disease. · Vitamin d reduces incidence of some cancers such as breast, colon and prostate. · Extends the benefits of sunlight to include mental health, help to relax and rest and it is necessary to improve the quality of human life and preventing depression and schizophrenia by secreting alandrovine. · Sun helps in the treatment of some diseases such as psoriasis that affects about 2% of Europeans may also help in treating tuberculosis. · Sun contributes to formation of pigment melatonin necessary to the health and safety of the skin. · Prevent appropriate doses of sunlight immune system disorders – may also help alleviate chronic pain. How to produce vitamin d from sunlight in healthy ways: Vary the amount of vitamin d that results from sunlight from one person to another but generally light-skinned people produce more vitamin d when exposed to sunlight. Just 15 minutes of exposure to sunlight on the face, arms and legs without using sunscreen to produce 1500-3000 unit vitamin d from cholesterol. This quantity is sufficient for a period of one to three days. In General, exposure to the Sun for 10-15 minutes several times a week is safe and does not cause damage to the skin and sufficient to provide healthy amounts of vitamin d for our bodies.