6 facts you should know about vitamin D, according to Harvard

6 facts you should know about vitamin D, according to Harvard

Health experts in the United States indicate the new dose of vitamin D that the body needs daily, find out!

Deficiency of vitamin D in the body causes bone problems such as rickets, a disease that rarely attacks the US; as well as osteoporosis, softening and weakening of bones, say the specialists.

This vitamin, in addition to protecting bones, benefits the health of muscles and nerves and helps the immune system to function properly. 

Also known as the sunshine vitamin , the nutrient is made in the body when sunlight hits the skin and can be obtained from food or supplements. 

The production of this vitamin happens when the skin absorbs rays in the invisible ultraviolet b part of the light spectrum. 

There are several factors that influence the levels of vitamin D in our bodies. According to Harvard, these are six: 

Place where we live 

According to Harvard, people who live farther from Ecuador receive less UVB light, which produces vitamin D, especially during winter, when sunny days are short or there is no sun. 

Air quality

Carbon particles in the air from burning fossil fuels, wood and other materials scatter and absorb UVB rays making it difficult to reach our skin if it is exposed. 

Use of sunscreen 

The protectors are made to protect the skin from burns caused by UVB rays. People who use it frequently and in large quantities are more likely to be blocked from producing vitamin D naturally. 

Skin color 

The melanin , which darkens the skin element, is competing for UVB rays with skin substance that activates the production of vitamin D. 

According to experts, people with dark skin tend to need more exposure to rays than people with fair skin to generate the same amount of vitamin D. 

Body weight 

Body fat absorbs vitamin D, which is why the researchers suggest that it may be an effective method of storing vitamin for when days are cloudy, rainy, or in winter. 

For its part, obesity has been linked to a deficiency of this nutrient. 


Older people have lower levels of the substance that makes vitamin D with UVB exposure than younger people. 

How much vitamin D does the body need daily?

Following the investigation of vitamin D deficiency in recent years, the panel of the United States Division of Health and Medicine increased the recommended daily dose to 600 International Units (IU) for people up to 70 years and 800 IU for those over 70.

Previous doses were based on 200 IU per day for people 50 years of age, 400 for ages 51 to 70, and 600 IU for adults over 71 years, and increased the daily intake for older age groups from 2,000 to 4 thousand IU.

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Written by trendoversy


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