A large survey conducted by an international team on adults in Japan found that maintaining high levels of vitamin D in the body may help to reduce the risk of many types of cancer including liver cancer.
Exposure to sunlight helps the body produce vitamin D
This important vitamin is recognized as having many health benefits, such as helping the body maintain calcium levels to ensure the health of bones, teeth and muscles.
In recent years, there are many evidences in the field of medical research that recognizes that vitamin D may also help to fight some chronic diseases, including some cancers.
But before that, most of these studies were conducted among people in Europe and America, and similar surveys targeting Asians were very limited.
The research team published in British Medical Journal recently revealed that they analyzed data from a large public health survey in Japan, involving a group of people from 40 years old to 69 years old, specifically about 33,700 people both male and female.
At the beginning of the survey, these people provided personal information such as medical treatment history, eating habits, lifestyle, and blood samples to measure vitamin D levels in the body.
The survey conducted a summary of the data over a period of 16 years, resulting in a total of 3301 new cases of cancer found in the survey population.
When analyzing the findings, after eliminating the factors that are known to have known carcinogenic risks such as age, smoking, alcohol consumption, and obesity, the survey results also show that people with vitamin levels D in the body is high, the risk of cancer has decreased about 20%, especially the risk of liver cancer has a particularly clear relationship (reduced from 30 to 50%).
However, the study results show that the risk of lung cancer and prostate cancer is not related to high levels of vitamin D.
The researchers added, the argument “vitamin D may help to prevent cancer” that other research groups previously published have once proven in the target populations of the study in Asia with a large scale.
However, their research also showed that beyond a certain level, there is no additional benefit.
Researchers say more research is needed to determine the ideal vitamin D distance to help to achieve optimal anticancer effects.
Vitamin D intake needs to be absorbed every day
- Healthy adults aged 19-50 need 200 IU of vitamin D/day.
- Older people need higher amounts of vitamin D to protect their bones.
- People aged 51-70 need 400 IU, people over the age of 70 need 600 IU of vitamin D.
Foods rich in Vitamin D
Fish, mushrooms, raw whole milk, cod liver oil, tofu, cheese, eggs, caviar, soy milk, oysters, orange juice, oats, pork loin, cereals, beef liver, butter, yogurt…
Vitamin D is a group of fat-soluble secosteroid, which enhances the intestinal absorption of calcium and phosphate. In humans, the most important compounds in this group are vitamin D3 (also known as cholecalciferol) and vitamin D2 (ergocalciferol).
Cholecalciferol and ergocalciferol can be supplied into the body through diet and additional measures. The body can also synthesize vitamin D (especially cholecalciferol) in the skin, from cholesterol, when the skin is fully exposed to the sunlight (so it is also called the “sunshine vitamin”).