1. Health effects of ultraviolet
radiation
There are many
health risks that
are facing
humanity.
Few of them are :
 Skin damage
 Eye damage
 Weakened
immune
system

2. Skin damage
A tan is visible proof
that your skin has been
damaged by UV rays.
Tanning is your skin's
response to
overexposure to UV
rays. Sunburn is also
caused by too many UV
rays Overexposure to UV
rays also causes
premature aging effects,
like:
 skin wrinkling and
hardening
(leathery skin)
 blotchiness
 loss of elasticity
 dark patches ("age
spots" or "liver
spots")
 precancerous skin
changes (called
actinic keratoses)

3. Eye damage
Too much exposure to UV rays may
cause painful temporary injuries to
your eye & it can prematurely age your
eye lenses, causing clouding causing
clouding of the lens (cataracts), non-
cancerous growths of tissue
(pterygium), loss of vision (macular
degeneration), and cancer of the
eyelid.

4. Weakened immune system
The Immune System, witch is your
body's natural defense against
disease, can loss its ability to resist
bacteria, which increases your risk of
infection.

5. On the other
hand, there are
some benefits of
UV radiation
 Vitamin D
production
 Treatment of
skin conditions

6. Vitamin D production
Vitamin D helps your body absorb calcium
and phosphorus which plays a big role in
bone development. The UVB part of sunlight
is what creates vitamin D in your skin.
However, season, time of day, cloud cover,
smog, skin pigmentation, and sunscreen use
are all factors that can affect the amount of
UV rays you receive.

7. Treatment of skin conditions
UV rays have been used to successfully treat
a number of diseases, including rickets,
psoriasis, eczema and vitiligo