Hello everyone today i will be discussing on ways in which the sun affect people with light and dark coloured skins.

The Good effects

Enhances Your Mind  

there are many sunlight importance, including that it is a free mood enhancer. When there is sun people feel better and have more energy, but it can also increase the levels of serotonin in the brain, which is associated with improved mood. Not surprisingly, serotonin levels are very high in the summer.

Treats Seasonal Depression (commonly referred to as Seasonal Affective Disorder)

When certain people lack sunlight in the winter they seem to trigger depression. The Symptoms include bad moods, difficulty making and keeping friends, overeating, tiredness and sleeping most of the time. Seasonal depression, usually known as Seasonal Affective Disorder, is rare in the warmer months.

Relieves Stress

It is like Everyone experiences stress for various factors, such as family, work and health issues.Stress can be relieved in a many ways, including exercise, having relaxing hobbies.

Improves Sleep

Sunlight exposure affect how much melatonin your brain produces and melatonin is what tells your brain when it is time to sleep. When there is  dark, you start producing melatonin so you are ready to sleep in about two hours. When there is more sunlight in the summer, you are likely to feel more awake. Modern technology has allowed people to change their light exposure artificially with lights, TV screens and computer screens (including tablets and cell phones). Consequently, the effect of insomnia is much higher now than it was before these devices were invented.

Vitamin D

It is a vitamin which is involved in maintaining healthy bone strength. One way you can get the suns vitamin is exposure to the ultraviolet light in sunlight. However,people don’t need much time in the sun to reap the benefits.15 minutes are enough of sun exposure to provide all the Vitamin D you need.

The Bad

Sun Damage to the Eyes

Long-term effects, unprotected exposure to ultraviolet light from the sun can destroy the retina, which is the back of the eye where the rods and cones make visual images, which are then delivered to the visual centers in the brain. Damage from exposure to sunlight can also led the development of cloudy bumps along the edge of the cornea, which can then grow over the cornea and prevent clear vision.

Heat Exhaustion

According to the Centers for Disease Control and Prevention (CDC), heat exhaustion is the body’s response to a lot of loss of water and salt, usually it is through sweating a lot. People who are working in a hot environment are at risk of heat exhaustion.

Symptoms of heat exhaustion include:

  • Headache
  • Nausea
  • Dizziness
  • Weakness
  • Irritability
  • Thirst
  • Heavy sweating
  • Elevated body temperature
  • Decreased urine output

Heat Stroke

If heat exhaustion is left untreated, it can lead to heat stroke. Heat stroke is the most serious heat-related illness and can be life-threatening.Heat stroke results to the body’s temperature to increase quickly and can reach up to 106 degree Fahrenheit within 10 to 15 minutes. Heat stroke need  immediate medical attention because if it is left untreated, it can result to death or permanent disability. If you may notice heat stroke, call 911 immediately.

Symptoms of heat stroke include:

  • Confusion, altered mental status, slurred speech
  • Loss of consciousness (coma)
  • Hot, dry skin or profuse sweating
  • Seizures


Sunburn is widely famous as one of the most common negative effects of too much sun exposure.The symptoms of sunburn do not usually appear until about four or five hours after the sun exposure happens. Ultraviolet light is the main cause of sunburn, which may come from the sun or tanning beds.

General symptoms of sunburn include:

  • Redness
  • Pain/tenderness
  • Swelling
  • Blisters
  • Flu-like symptoms, such as nausea, fever, chills or headache

If you notice a sunburn fever, it’s times to look for attention from a medical professional. Besides a fever, severe burns also involve significant pain and extensive fluid-filled blisters.

Skin Cancer

The worst  long-term exposure to the sun is the development of skin cancer. Because the sun destroys the skin develops over years, the older you are, the greater danger of developing skin cancer. After years of exposure to the sun providers look for three common types of skin cancer (in order of how often they occur): basal cell carcinoma, squamous cell carcinoma and malignant melanoma.

Protect Yourself



Original Post

Hi Dorcas,

Nice research! It's amazing how much the sun can affect us, both positively and negatively. It's also interesting how the sun increases levels serotonin in the brain - I wonder why? Why is it that we associate the sun with happy feelings, and the rain with sad ones? Especially since the sun can be so dangerous if we do not exercise caution and wear sunblock and sunglasses and stay hydrated.

For your next round of research, here is a website that talks about how the sun affects the Earth, if you want to have a look at that:


Good luck!

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