Vitamin D linked to lower risk of cancer: study

Higher levels of Vitamin D in the blood may be linked to a lower risk of developing certain cancers, a study in Japanese adults reported Thursday.

“These findings support the hypothesis that Vitamin D has protective effects against cancers at many sites,” researchers reported in a study published in The BMJ medical journal.

Vitamin D is made by the skin in response to sunlight. By maintaining calcium levels in the body, it helps keep bones, teeth and muscles healthy.

While the benefits of Vitamin D on bone health are well known, there is some evidence that it may protect against chronic diseases as well, including some cancers.

Studies to date, however, have been carried out mainly in European and North American people.

As natural Vitamin D concentrations can vary by ethnicity, researchers from half-a-dozen Japanese medical schools and institutes set out to determine the potential for lowering cancer risk in Asians.

They analysed the public health records of 33,736 men and women aged 40 to 69.

At the start of the study, participants provided detailed information on their medical history, diet and lifestyle. Blood samples were taken to measure Vitamin D levels.

The researchers did not specify whether the trial participants used vitamin supplements or not.

Taking into account seasonal variations, the group was divided into four groups, ranging from the lowest to highest concentration of Vitamin D.

Participants were then monitored for 16 years on average, during which time 3,301 new cases of cancer were recorded.

After adjusting for well-known cancer risk factors — age, weight, smoking, and alcohol intake, for example — the researchers found that, overall, higher Vitamin D levels was associated with a 20 percent lower cancer risk for both genders.

The risk of liver cancer dropped even more, by up to 50 percent, especially for men.

Vitamin D did not appear have any impact in warding off lung or prostate cancer, however.

None of the cancers examined showed an increased risk associated with higher Vitamin D levels.

Previous studies have shown that low levels of Vitamin D increase the risk of bone fractures, heart disease, colorectal cancer, diabetes, depression, Alzheimer’s disease and death.

But others have found no evidence of a link to disease risk.

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  1. Avatar Lukati May 17th, 2013 at 5:01 pm

    Masanga pliz focus on what is happening in your country. KONYI is your right hand man and he is on the loose ,you have no reason to comment on kenyan issues

  2. Avatar Walter Okoth May 17th, 2013 at 6:30 pm

    Which one is this meddling in Kenyan issues?

  3. Avatar MUTANGWA...DR MUTONGIO May 18th, 2013 at 12:36 pm

    we need to appricate the work done by DR MASANGA .. infact he deserves to be given an ward by the kenyan goverment for his efforts to advice them and also fight for justice.. GO go DR AND CRUSH THAT OOTP AND LET THEM BE INVESTIGATED

  4. Avatar Mazzdark May 18th, 2013 at 3:07 pm

    By a charlatan who himself faces ICC charges of interfering with witnesses

    1. Avatar Natty Dread November 4th, 2013 at 11:15 pm

      Update yourself. Due to Matsanga’s efforts, the key witness against Uhuru, James Maina Kabutu, was dropped by the OTP after admitting that his testimony was false. The Prosecutor tried to instigate charges against Matsanga for alleged witness tampering but had to withdraw because there was no evidence.

      If you have evidence of tampering, why don’t you volunteer it to the OTP and help them get this persistent monkey off their back?

  5. Avatar Jambo May 18th, 2013 at 8:20 pm

    Dr. Matsanga, Do you know that people died during the post election violence? Who is standing for the displaced? It seems you don’t know much about what happened? Our president and his deputy are upto cooperating with the ICC to prove themselves. If you want ICC to investigate its prosecutors, its like telling our government to investigate its prosecutors in crime cases and others.

    1. Avatar Natty Dread November 4th, 2013 at 11:17 pm

      “Dr. Matsanga, Do you know that people died during the post election violence?”

      What a silly question!

  6. Avatar Devobserver February 19th, 2014 at 9:57 pm

    Following Ocampo’s disclosure, the Bensuda’s, Judges and all ICC must each come out publicly and DECLARE none of them is pressured by foreign governments’ envoys to some ends. Even if Ocampo was strong to resist pressure, Bensuda and the three saints may not be and I don’t believe that the envoys gave up thereafter. Why then try to torture, yes torture, witnesses who’ve seen no point of lying to testify?


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