Dr. Rachel Morris Jones, a dermatologist at King's College, uses her long experience to remove myths about our skin. And offers some tips and treatments to keep the skin at its best, the Daily Mail reported.
It is known that avoiding sunburn is very important, but the sun is also important to our health, Dr. Jones said. Most of us know that vitamin D is vital to our bones and immune systems and is made in the skin when exposed to sunlight. But the question remains: "How long do we need?"
Who are the people at risk of vitamin D deficiency?
The general consensus is that our bodies need about 20 to 25 micrograms of vitamin D daily. But to obtain this amount, we must realize the required time, which is related to the intensity of the sun and clouds, and the type of skin.
Scientists at the Norwegian Institute of Aeronautics have developed a calculator that takes all these factors into account and therefore estimates what we need from the sun's rays. For example, depending on the diversity of London's population and weather on different days of the year, Caucasian blonds should be exposed to eight minutes of sunshine on 1 April, five minutes on 1 August and two and 20 minutes on 1 December.
Damage and risk of vitamin D deficiency
Those arriving from the Mediterranean region need 13 minutes on 1 April, 7 minutes on August 1, 4 hours and 8 minutes at the beginning of December, while black people need up to 44 minutes in April, 24 Minutes in August and more than 24 hours in December.