Why should we control the UV doses received and what are the major issues?
Prolonged exposure to ultraviolet radiation can cause significant damage to living organisms.
Fortunately, in most cases, the organisms are able to overcome these attacks with natural self-correcting mechanisms to control the risks associated with such an exposure. For instance, most of us are able to tan.
However, at higher doses, the human species can develop certain photo-allergies, undergo accelerated aging of the skin, suffer from eye cataracts or develop certain types of skin cancer such as melanoma, in the most serious cases.
Risks of UV exposure for each human being is not equal
In conclusion, the risks incurred by people who expose themselves to UV, voluntarily or not, are mainly related to:
Thus, the risks of UV exposure for each human being is not equal. It is a function of skin type or phototype (more or less dark) and there are four different skin types that determine the type of sunscreen you need to apply in each case (SPF values). Similarly, the plant world is also very sensitive to the UV dose absorbed as growth yields slow down with abnormal exposure to UV rays.