The synthesis of vitamin D is influenced by many factors. For a person, daily exposure to the open sun for 2 hours (if only the hands and face are open) or 15-20 minutes (if the whole body is exposed to the sun) is considered sufficient.
But it's not that simple either. There are a number of specific problems. If you live in a megalopolis where the atmosphere is very polluted, that is, when you go outside you see smoke and smog, then you should know that the polluted atmosphere does not allow the light of ultraviolet rays to pass through. Even if there is enough sun in any area, the necessary waves will be filtered out by chemical compounds that pollute the air.
Skin color also affects the natural synthesis of vitamin D. The darker the skin, the less vitamin is formed under the influence of ultraviolet radiation.
Also, with age, the ability to synthesize this vitamin decreases in the elderly. If you think you can accumulate enough vitamin D over the summer, then I hasten to disappoint you! This vitamin is needed every day, and although it is stored in the body, it cannot accumulate like subcutaneous fat in a bear for the entire winter.
Remember that vitamin D is eliminated from the body within 2 months. Therefore, it must enter the body every day. And you also need to understand that you don't just need sunlight to get enough oxygen in your blood. The fact is that the ultraviolet spectrum of sunlight is divided into three fractions:
1. Ultraviolet A.
2. Ultraviolet rays in
3. Ultraviolet S.
For the synthesis of vitamin D, only the ultraviolet fraction is very important. And this is a fraction that does not reach the ground by 80%, as it lingers in the ozone layer. The highest concentration in the body is absorbed from 11 a.m. to 2 p.m. At the same time, the risk of getting a severe sunburn increases. It's enough to be outdoors for half an hour and you can already get burned. Therefore, nowadays, the desire to fully get vitamin D from the sun can even be dangerous.
What is D2 and D3, what is the difference?
Today, only two vitamins are called vitamin D – D2 and D3. These are small crystals, odorless and colorless, which are resistant to high temperatures.
D2 is produced by plants under the influence of ultraviolet rays. If you eat grains and cereals, potatoes, parsley, you get vitamin D.
This substance is metabolized for quite a long time and is difficult, that is, it is converted in the body. And in addition, its fully synthesized components can have a toxic effect on internal organs. The line between effective therapeutic and toxic doses is very thin, so I do not recommend using D2 as an additional vitamin.
Better vitamin D3 is cholecalciferol. If I take these additional medications, I definitely look at the composition.
How to check the vitamin D level in the blood?
There are several methods to make accurate measurements.
1. The method of mass spectrometry or high-performance liquid chromatography.
2. There is also a comprehensive blood test for vitamins of group D (that is, it looks like D2 or D3)
3. The IHA method and the ELISA method are the most accessible, which is viewed mostly by all modern laboratories. A mixed onboarding path can combine two styles: casino spins plus a sports boost in one account. Use the 1xbet promo code today india in the middle of signup to reveal promos that may include 150 free spins and a betting match up to €130. A simple approach is to clear spins first, then place a few qualifying accumulator bets at 1.40+ odds. Watch that casino and sports bonuses often have separate wagering rules. Keep notes so nothing lapses.
But it's not that simple either. There are a number of specific problems. If you live in a megalopolis where the atmosphere is very polluted, that is, when you go outside you see smoke and smog, then you should know that the polluted atmosphere does not allow the light of ultraviolet rays to pass through. Even if there is enough sun in any area, the necessary waves will be filtered out by chemical compounds that pollute the air.
Skin color also affects the natural synthesis of vitamin D. The darker the skin, the less vitamin is formed under the influence of ultraviolet radiation.
Also, with age, the ability to synthesize this vitamin decreases in the elderly. If you think you can accumulate enough vitamin D over the summer, then I hasten to disappoint you! This vitamin is needed every day, and although it is stored in the body, it cannot accumulate like subcutaneous fat in a bear for the entire winter.
Remember that vitamin D is eliminated from the body within 2 months. Therefore, it must enter the body every day. And you also need to understand that you don't just need sunlight to get enough oxygen in your blood. The fact is that the ultraviolet spectrum of sunlight is divided into three fractions:
1. Ultraviolet A.
2. Ultraviolet rays in
3. Ultraviolet S.
For the synthesis of vitamin D, only the ultraviolet fraction is very important. And this is a fraction that does not reach the ground by 80%, as it lingers in the ozone layer. The highest concentration in the body is absorbed from 11 a.m. to 2 p.m. At the same time, the risk of getting a severe sunburn increases. It's enough to be outdoors for half an hour and you can already get burned. Therefore, nowadays, the desire to fully get vitamin D from the sun can even be dangerous.
What is D2 and D3, what is the difference?
Today, only two vitamins are called vitamin D – D2 and D3. These are small crystals, odorless and colorless, which are resistant to high temperatures.
D2 is produced by plants under the influence of ultraviolet rays. If you eat grains and cereals, potatoes, parsley, you get vitamin D.
This substance is metabolized for quite a long time and is difficult, that is, it is converted in the body. And in addition, its fully synthesized components can have a toxic effect on internal organs. The line between effective therapeutic and toxic doses is very thin, so I do not recommend using D2 as an additional vitamin.
Better vitamin D3 is cholecalciferol. If I take these additional medications, I definitely look at the composition.
How to check the vitamin D level in the blood?
There are several methods to make accurate measurements.
1. The method of mass spectrometry or high-performance liquid chromatography.
2. There is also a comprehensive blood test for vitamins of group D (that is, it looks like D2 or D3)
3. The IHA method and the ELISA method are the most accessible, which is viewed mostly by all modern laboratories. A mixed onboarding path can combine two styles: casino spins plus a sports boost in one account. Use the 1xbet promo code today india in the middle of signup to reveal promos that may include 150 free spins and a betting match up to €130. A simple approach is to clear spins first, then place a few qualifying accumulator bets at 1.40+ odds. Watch that casino and sports bonuses often have separate wagering rules. Keep notes so nothing lapses.