Excess heat
Some countries can be so hot and humid that it can affect your well-being, comfort and health in several ways. Obviously the energy sapping heat and humidity of tropical jungles will shock your system so you need a few days to acclimatise.
Even the moderate heat and humidity of a Caribbean island can shock the system of UK citizens more used to chilly winds and drizzle.
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Excess heat – countermeasures
Take your time getting used to the climate.
Pace yourself until you have acclimatised.
Drink plenty of water (not alcohol).
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Don’t forget that when perspiring you need to replenish your body salts, so don’t forget to eat some salty foods to balance the loss or drink something specially formulated to rebalance the body chemistry.
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Strong sunshine
Our UK skin is generally not used to coping with a 12-hour daily dose of extremely high UV rating sunshine.
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What is the UV rating that people talk about when discussing sunburn and the strength of the sun?
The sun emits three different types of ultraviolet (UV) radiation, which all damage the skin and can damage the eyes too. The three types are:
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• UVA
• UVB
• UVC.
UVA radiation penetrates deep into your skin, and causes damage such as apparent ageing, wrinkles and discoloration.
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UVB causes what is commonly known as sunburn. Surface blood vessels expand and leak fluids, producing the identifiable redness and pain of sunburn. Any sunburn can cause permanent and irreversible skin damage. UVB is associated with the most harmful effects of UV radiation, including ageing, wrinkles, cancer, cataracts, snow blindness, etc.
UVC should be absorbed and blocked by the ozone layer in the atmosphere. Global pollution and the depletion of the ozone layer have reduced the filtering etfect of the atmosphere, so we are in ever-greater danger of exposure to UVC radiation.
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In most people, when their skin is exposed to sunshine (UV radiation) their skin reacts to protect itself by producing melanin pigmentation, which darkens and protects the skin. That darkening is often called a ‘suntan’.
The melanin absorbs UV radiation, protecting skm cells from UV damage – for a while1
Experts say that fair-skinned people should gradually expose their skin to sunshine in stages for up to 7 days before their melanin production has reached a maximum. Unfortunately very fair-skinned people take longer, while darker-skinned people take a shorter time, so no fixed rule can be given.
Cumulative Danger. UV radiation has a cumulative effect. The more often you burn the worse the damage. If you burn often enough and badly enough, especially during childhood, your chances of developing skin cancer increase significantly.
