Contacts

Phone

+ 385 1 46 96 111


Fax

+ 385 1 64 14 006


Epidemiologist

+ 385 91 46 96 444


E-mail

info@stampar.hr


Address

Dr. Andrija Štampar
Institute of Public Health

Mirogojska St. 16
HR-10000 Zagreb
Croatia


Bank account number
70010-019693
IBAN:
HR 3023400091100159915
SWIFT: PBZGHR2X
PBZ d.d. Zagreb, Croatia

VAT No. HR 33392005961

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Protection against high temperatures and solar ultraviolet radiation
A small amount of solar radiation is welcome, it is necessary for the synthesis of vitamin D, which promotes absorption of calcium - necessary for building bones. It is also known that seasonal changes (shorter days in winter) for a large number of people can cause fatigue despite sufficient quantity of sleep and loss of energy, lethargy, sadness and anxiety. A group of these symptoms (which may be of different intensity) is called a seasonal depressive disorder and affects about 10% of the population. It is believed that the development of this disorder causes the decrease of sunlight during winter months. The lack of sunlight affects biochemical balance in the brain by changing the mechanism of secretion of melatonin, a hormone important for healthy sleep, and serotonin, which regulates mood. But the last ten years, scientists warn of damage of the ozone layer in the atmosphere, causing an increasing amount of UV rays reaching the Earth's surface, thereby increasing the intensity of solar radiation, with all its negative consequences.

When it comes to protecting the health of high temperatures and protection from UV radiation that particularly vulnerable groups are:

  • children
  • elderly
  • chronic patients
  • people who work in open spaces

Recommendations:
 
During spring and summer temperatures are high, and still there is a lot of moisture in the air which can cause adverse health consequences (sunstroke, heat stroke, dehydration...) and it is therefore important to:

  • avoid staying outdoors during the hot summer days (stay in the shade or indoors in the colder area)
  • make sure that exit from the cold space heat is gradual
  • drink plenty of liquids
  • eat easily digestible food
  • wear transparent clothes, shoes, hat
  • enhance the intake of vitamin C
  • adjust the daily activities of the colder part of the day
  • avoid physical effort

Protection from UV radiation:
 
Preventing formation of malignant skin tumors is an important task of a doctor, skin self-examination is especially important for persons who work outdoors and those who have birthmarks. Risk of skin tumors begins in childhood and it's important to:

  • avoid staying outdoors from 10 a.m. to 5 p.m.
  • Wear protective clothing and glasses
  • use protective creams and other protective equipment
  • removed a suspicious skin lesion
  • measures to encourage acceptable behavior, and moderate exposure to natural and artificial UV radiation of the whole population, especially children, in order to: reduce the risk of skin cancer later in life, reduce visual impairment, reduce damage to the immune system, improve life quality, reduce treatment costs and to extend life expectancy.

According to scientists, each percentage of ozone damage causes thousands of additional cases of skin cancer annually, and blindness of hundreds of thousands of people around the world.
 
Melanoma is the skin and mucous membranes tumor, which originated in the malignant transformation of melanocytes of the basal layer of epidermis. The most relevant environmental factor is sun exposure (UVA and UVB) and is also one of the major contributors to the development of melanoma. Genetic and environmental aspects have to be considered. The risk of melanoma is not so much associated with cumulative, but with intermittent, exposure to strong sunlight. Malignant behavior manifests itself in early metastasis. In 50% of cases clinically unchanged skin develops and in 35-50% malignant transformation of mole occurs.
In recent decades, there was a significant increase in the incidence and mortality caused by malignant melanoma.
Exposure to UV rays, especially in lighter skinned people led to an increase in skin damage, which is manifested as premature aging of the skin or skin cancer. Attention is drawn to the harmful so-called recreational sun tanning - intense sun exposure in a short period of time, e.g. during a short vacation.

Author: Branislava Resanovic, MD, M.Sc.

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