The sun’s ultraviolet b (uvb) rays interact with a protein called 7-dhc in the skin, converting it into vitamin d3, the active form of vitamin d the problem is, too many people think that using sunscreen and other forms of sun protection leads to vitamin d deficiency, and that the best way to obtain enough of the vitamin is through unprotected sun exposure.
As you can see from the chart above people with fair skin may get sunburned faster that those with darker skin the time limit for unprotected sun exposure may vary between different skin types according to the fitzpatrick scale my skin type is 3, so my doctor recommends me spending 15 minutes out in the sun daily. With repeated sun damage, the skin starts to look dry, wrinkled, discolored, and leathery although the skin appears to be thicker, it actually has been weakened and, as a result, it will bruise more easily however, the sun's most serious threat is that it is the major cause of skin cancer, which is now the most common of all cancers doctors believe that most skin cancers can be avoided by preventing sun damage.
The problem is, too many people think that using sunscreen and other forms of sun protection leads to vitamin d deficiency, and that the best way to obtain enough of the vitamin is through unprotected sun exposure but that can lead to a whole other set of serious problems. Unprotected skin can be damaged by the sun’s uv rays in as little as 15 minutes yet it can take up to 12 hours for skin to show the full effect of sun exposure so, if your child’s skin looks “a little pink” today, it may be burned tomorrow morning. Unprotected exposure to sun for a very long amount of time is extremely dangerous to our health it doesn’t matter what color of skin you are, it will still harm you big time if you expose yourself too much to the sun. Be safe in the sun in this section you can learn about some of the damaging effects that too much ultraviolet (uv) radiation exposure can have on the skin you'll also find tips to help you protect yourself and your family from getting too much sun.
Some of the top dangers of unprotected exposure to the sun since elementary school, we have learned that the sun emits ultraviolet rays to the earth we have been taught time and again of how dangerous these ultraviolet rays can be to the human skin.
Tanning and unprotected sun exposure according to the skin cancer foundation, people who use a tanning bed before age 35 increase their risk of developing melanoma by 75% regular sun can hurt you too, so wearing protective clothing and sunscreen and finding shade are good ideas if you’re going to be out in the sunshine for more than 15 minutes. This skin cancer is also caused by exposure to the sun, but can also occur in burn scars (from either heat or radiation treatment) or from chronic ulcers of the skin in a small number of cases, scc can spread to the lymph nodes and (rarely) to other organs. 13 ways the sun affects your body: the good & the bad long-term, unprotected exposure to ultraviolet light from the sun can damage the retina, which is the back of the eye where the rods and cones make visual images, which are then sent to the visual centers in the brain much of the damage to our skin caused by sun exposure can be.
Cumulative sun exposure causes mainly basal cell and squamous cell skin cancer, while episodes of severe sunburns, usually before age 18, can raise the risk of developing melanoma other less common causes are repeated x-ray exposure and occupational exposure to certain chemicals. Staying out of the sun is the best way to avoid sun damage, but most of us go outdoors regularly so when you go outside, take these precautions: always wear sunscreen apply it on your skin every day make it a habit, as you do with brushing your teeth avoid sun in the middle of the day, from about 10 am to 3 pm.
In short, unprotected sun exposure puts you at risk for any number of conditions that can permanently damage your skin, disfigure you, sometimes even kill you and the regular use of sun protection can go a long way to keep any of that from happening.