Sunbathing can promote the synthesis of vitamin D and prevent osteoporosis, plus many men and women believe that wheat color is a healthy skin tone, so many people are very enthusiastic about sunbathing. However, it is a dangerous act to let your skin be overexposed to the hot sun for a long time, did you know that?
induce cardiovascular disease
A survey of cardiovascular diseases in Beijing found that hot and muggy weather is a risky weather for ischemic strokes.
Patients with hypertension and cardiovascular disease are under cardiovascular stress in a hot and sunny environment with increasing body heat and increased myocardial oxygen consumption. Since stifling heat causes blood vessels to dilate and blood viscosity to increase, cerebral hemorrhage, cerebral infarction and myocardial infarction can easily occur and may lead to death in severe cases.
Heat stroke
Body temperature will rise when sunbathing, the body regulates body temperature through sweating, but if the lost water is not replenished in time, the discharge of sweat will be reduced, the body heat does not dissipate, it is easy to close sweat, causing heat stroke.
People in heatstroke will have dizziness, confusion, nausea and vomiting phenomenon, serious will be coma or even death.
Causes UV skin allergy
Ultraviolet allergy is an abnormal photodegenerative reaction caused by the action of sunlight. The sun has two types of penetrating ultraviolet rays, UVA and UVB, which reach the dermis of the skin and cause redness, burning and painful sensations in the skin exposed to the sun for a long time.
Melanin Deposition
The human epidermis is distributed with a layer of basal cells, which contain "melanogen", a complexine substance, under the action of ultraviolet light, "melanogen" will become black, deposited in the surface layer of the skin, so that the skin appears dark brown. This is a big no-no for women who advocate "a white cover up".
Melanin deposition is also the culprit of skin problems such as freckles and sun spots, so women who love beauty must pay attention to sun protection.
Increase the incidence of skin cancer
Occasional exposure to the sun can cause peeling, redness and swelling, however, if exposed to the hot sun for a long time, it can increase the chance of developing skin cancer.
Accelerated skin aging
Prolonged exposure to the sun can damage the skin structure and accelerate the aging and decay of skin cells, causing the skin to lose elasticity and develop folds.
Makes people tired and sleepy
When the temperature rises, the skin pores are stretched and the blood supply increases, while the oxygen supply to the brain decreases accordingly, slowing down the work of the brain, making it easy to produce fatigue and weakness of the limbs, which naturally makes you sleepy.
Warm tips
Prolonged exposure to the sun will indeed have great harm to the body, but in winter avoid the midday sun, occasionally a sun can promote the body's absorption of calcium, so that people's body and mind a warm Oh!
