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Sunburned with Dark Skin

Image result for sunscreen on dark skin

Photo from Simply SunSafe

Many believe that people with a dark complexion do not have to wear sunscreen. While it is true that people with darker skin have more protection against ultraviolet radiation (UVR), it is still recommended to wear sunscreen. 

Melanocytes produce melanin, a molecule that protects your skin by absorbing or deflecting UV rays. Melanocytes produce more melanin after exposure to the sun, in particular after skin damage in the form of a sunburn. Sunburn occurs when skin is exposed to excessive UVR from the sun or in a tanning bed. 

People with light skin are more prone to sunburn because they have less melanin. But dark skinned individuals can also get sunburned because dark pigments do not block out 100% of UV rays. 

No matter your skin color, it is recommended that you wear sunscreen for prolonged sun exposure because damaging sun exposure increases your chance of developing skin cancer.

https://www.uptodate.com/contents/sunburn-beyond-the-basics

https://www.besthealthmag.ca/best-you/health/summer-health-myths/

https://qsun.co/should-i-wear-sunscreen-if-i-have-dark-skin/

https://www.sciencedirect.com/topics/chemistry/eumelanin

https://www.verywellhealth.com/what-is-melanocyte-1069513

https://medium.com/getsundots/how-does-our-skin-protect-us-b93bdd4e00e2

Butter for Burns

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Photo from Jamaica Hospital Medical Center

Madison McGuire

The butter-for-a-burn remedy has become widely accepted, because it is believed that the greasy substance can be cool and soothing. However, there are no clinical studies that support the use of butter to limit the burn or to aid healing or comfort. While butter may afford some temporary relief from the sting of a recent burn, it has no known antiseptic, antibiotic, or long-term pain-relieving properties.

Since burns are the result of tissue injury caused by excessive exposure to heat, it is helpful to immediately cool the skin in order to stop the damage from the burning process. Butter and other oily products may actually worsen the effects of the burn, because the grease slows the release of heat from the skin. Butter may also contain bacteria that could lead to an infection, and the thick, greasy substance makes it more difficult to properly clean the area. 

The best way to treat a burn is with cool water, which gently removes heat from the area and may alleviate pain. Contrary to popular opinion, ice and ice water should be avoided, because extreme cold and extreme heat can both damage skin. 

https://uamshealth.com/healthlibrary2/medicalmyths/butterforburns/

https://hcahealthcare.com/hl/?/156971/True-or-False–Applying-Butter-to-a-Burn-Aids-Healing-and-Relieves-Pain

https://www.abc.net.au/health/talkinghealth/factbuster/stories/2012/04/17/3459237.htm

 

Do Sit-Ups and Crunches Give You a Six-Pack?

Image result for sit ups

Image from PopSugar

Nicole Kell

Many people’s dream body involves having visibly defined abdominal muscles, commonly referred to as a “six pack”. There are many misconceptions about how to achieve this goal. Doing hundreds of sit-ups daily is not enough. It is said that, “abs are made in the kitchen.” With a healthy layer of body fat it may not be possible to see abs even when they are toned. You need very low body fat to be able to see definition of the abdominal muscles.  

Science says that you should eat less calories than you burn to lose fat. In order to do so, some recommend specific changes such as cutting back on sugar, simple carbs (breads, pastries, soft drinks), fried food, and alcohol while increasing consumption of vegetables, whole grains, healthy fats (nuts, avocado, eggs, salamon), and lean proteins.  No particular diet is demonstrated to be more effect than simply eating fewer calories than you burn. 

It is estimated that men must get body fat down to 6-9% for men and 16-19% for women of total body weight to be able to see abdominal muscle definition.  That’s a difficult level to reach, and dropping much lower than that can be unhealthy.  

In addition to very low body fat, theories state that it helps to strengthen the core muscles such as the transverse abdominal, the internal obliques, and the erector spinae. These muscles lie deep within your core and–so the theory goes–must be strong in order to see that six-pack. The best exercises for your core are compound exercises that engage every muscle in your core such as planks, deadlifts, overhead presses, and squats. Sit-ups and crunches only target a few muscle groups. Whether or not you can see definition in your abs, core muscles limit back pain and improve  balance and flexibility.