While some sunlight is very beneficial to our bodies, too much exposure to the sun can cause serious burns and can even lead to skin cancer. Depending no the time of year and where you live, it can be very easy to get significantly more sun than your body needs.
The Good of Sunlight
Sunlight causes our skin to produce vitamin D. This is an essential vitamin that helps our immune system and can even affect our moods. Here are just a few of the benefits of getting safe amounts of sunlight.
- fights depression
- builds strong bones
- helps prevent Type II diabetes
- boosts your immune system
- increased energy levels.
While getting the right amount of sun is good for you, overexposure can have serious consequences.
Sunburns are inflammation and damage to the skin caused by UV exposure. Your skin type will determine how much sun you can handle before a burn begins to form. While any skin type is susceptible to burns, individuals with fair skin and those who live in cooler temperatures are generally more at risk.
Ultraviolet (UV) rays are most intense during the middle of the day between 10AM and 3PM, during the summer and if you live closer to the equator. Mild cases of sunburn will typically heal on its own. You can speed up the process with the help of topical ointments.
More severe cases can lead to permanent skin damage or even skin cancer. Prevention is key to stopping UV rays from penetrating the skin can causing long-lasting affliction. Anti-oxidants like vitamin C and vitamin E can help reduce absorption of UV rays.
Sunburn and Skin Cancer
Sunlight in moderation can be a healthy source of Vitamin D and can aid in the improvement of acne. Overexposure to sunlight can have the same effects as superficial thermal burns and puts the individual at risk for two types of skin cancer: Squamous cell carcinoma and basal-cell carcinoma.
According to the American Cancer Society, more than 26,000 women and 33,000 men are diagnosed with melanoma each year. Nearly 7,770 of these cases become fatal. Wearing topically-applied sunscreen and proper attire can prevent damage caused by sunburn and help prevent skin cancer.
Other Risk Factors
The correlation between melanoma and sunburn is due to UV radiation. UV radiation varies by latitude and with higher latitudes, the lower the UV ray intensity.
Sunburn can also be caused by pharmaceutical products, such as some oral contraceptives, antibiotics and tranquillizers, which can cause sensitivity in some skin types. Individuals with light skin and freckles are also at a greater risk.
Ozone depletion worldwide, especially in the southern hemisphere, has led to higher levels of UV radiation. Changes in the ozone layer have been thought to increase skin cancer cases.
Common Symptoms of Sunburn
Minor cases of sunburn can lead to tenderness of the affected area and slight redness. Itching, peeling skin, edema, nausea, rash, blistering and fever can be seen in more severe cases.
Extreme sunburns may require hospitalization in some individuals. Varying degrees of pain will depend on the type of sunburn: first or second degree. Sunburns can start in as little as 15 minutes while the symptoms may take 2 to 6 hours to appear. Burns generally continue to develop for up to 72 hours after the initial burn occurs.
Post-sunburn symptoms may continue for weeks thereafter. Individuals who develop asymmetrical, growing or color-changing skin lesions should consult with a dermatologist.
How to Protect Yourself
Individuals can reduce their risk of getting a sunburn or skin cancer by reducing their UV radiation exposure.
Sunscreen with an SPF of 10 will block up to 90 percent of UV rays while an SPF of 20 will block up to 95 percent of rays. Application of sunscreen should begin 15 to 30 minutes prior to going outdoors. A second application should be used 15 to 30 minutes after the initial exposure.
Proper attire, including hats and sunglasses, should be worn to block UV light. Protecting the eyes is especially important as clusters of melanin are found within the iris. Certain foods, such as beta-carotene and lycopene found in tomatoes, can increase the skin’s ability to fight off the harmful effects of UV rays.
Your Treatment Options
Further exposure to sunlight should be avoided while trying to heal any variation of sunburn. While certain topical steroids can be used to reduce the pain and swelling of sunburns, such as 1 percent hydrocortisone cream, time is required for proper healing.
Most types of sunburns heal completely within several weeks after the initial burn occurs. Home remedies, such as Aloe Vera lotions, wet clothes and frequent baths or showers can help to ease the discomfort of the burn. Pain and swelling of the afflicted area can be reduced with an over-the-counter acetaminophen, anti-inflammatory drug or Aspirin.
- Gardening and Your Health: Sunburn & Skin Cancer
- Safety and Emergency Preparedness: Sunburn and Skin Cancer – PDF
- Department of Occupational Health & Safety: Safety Alert on Melanoma
- Stony Brook University Medical Center: Sunburn Treatment and Prevention
- McKinley Health Center: Sun Damage
- University of Maryland Medical Center: Sunburn – Overview
- Children’s Hospital of Pittsburgh: Facts About Sunburn
- Ohio State University Medical Center: Sunburn
- Vanderbilt University: Effects of Tanning Beds
- Children’s Hospital of Philadelphia: Skin Cancer Health Information
- University of Wisconsin-Madison: Sunburn Prevention and Treatment
- Dermatology Online Journal: Sunburn Risk Factors for Beach-Going Children
- Texas A&M University: Bodily Defenses – Sunburn
- Environmental Effects of Ozone Depletion: Effects on the Skin
- Medline Plus: Sunburn
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- U.S. Food and Drug Administration: The Risks of Tanning
- Bureau of Disease Control: Sunburn
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- Sunscreen & Skin Self-Checks Frequently Asked Questions – PDF
- North Dakota Department of Health: Baby Fact Sheet – Sunburn – PDF
- New York State Department of Health: Skin Cancer
- U.S. Department of Health & Human Services: FDA Issues New Rules on Sunscreens
- Roanoke Fire Department: Sun Safety
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- Better Health Channel: Skin Cancer – Risk Factors
- Australasian College of Dermatologists: A-Z of Skin – Moles & Melanoma
- World Health Organization: Health Effects of UV Radiation
- Canadian Centre for Occupational Health and Safety: Skin Cancer and Sunlight
- Go Sun Smart: The Sun and Your Skin – Effects