http___metro-portal.hr_folna-kiselina-i-vitamin-b-ne-sprjecavaju-rak_12880_1.xml
1.1 2.1 3.1 3.2 3.3 4.1 4.2 5.1 6.1 6.2 6.3 7.1 8.1
Better with age B vitamins may offer stronger cancer-preventing benefits for people over 65. According to a recent study published in the Journal of the American Heart Association (JAMA), B vitamins may help prevent cancer. While I wouldn’t exactly classify this as “news,” the study did uncover one detail that I hadn’t heard before. Apparently these vitamins offer more cancer-preventing benefits for people ages 65 and older. The researchers looked at the effects of folic acid and vitamins B6 and B12 on the rates of breast cancer and other invasive cancers in 5,442 women. They found that, overall, women in both the supplement group and the placebo group had similar rates of cancer. But when they looked specifically at age breakdowns, they discovered that women over the age of 65 in the supplement group has a 25 percent lower risk of invasive cancer and a 38 percent lower risk of breast cancer. This certainly isn’t to say that younger women shouldn’t be supplementing with these nutrients – they play a critical role in keeping DNA healthy in all ages. But it is a reminder to those people who do fall into the 65+ age bracket that it’s more important than ever to make sure you’re getting enough. Dr. Wright recommends 500 to 1,000 micrograms of vitamin B12, 50 to 100 milligrams of vitamin B6, and 5 to 10 milligrams of folic acid. Source: “B vitamins may protect over-65s from cancer, says study,” NutraIngredients.com (www.nutraingredients.com), 11/7/08
1.1 2.1 2.2 3.1 3.2 4.1 4.2 5.1 5.2 6.1 6.2
Folna kiselina i vitamin B ne sprječavaju rak Folna kiselina, vitamini B6 i B12 ne smanjuju rizik od raka u žena s povećanom sklonosti kardiovaskularnim bolestima, prema istraživanju objavljenom u utorak u časopisu Journal of the American Medical Association (JAMA). Znanstvenici su nekada mislili da folna kiselina, vitamini B6 i B12 imaju važnu ulogu u sprječavanju nastanka raka, ističu autori tog istraživanja. Od 1998. mnoge su se namirnice u Sjedinjenim Državama obogaćivale sintetskim dodatkom folne kiseline kako bi se smanjio rizik od poremećaja živčanog sustava. Oko trećine odraslih stanovnika SAD-a danas uzima dodatke prehrani s multivitaminima koji sadrže folnu kiselinu, vitamine B6 i B12, dodaju autori studije. Istraživanje se provodilo među 5.442 Amerikanke koje rade u zdravstvu, u dobi od 42 godine i više, s povećanom sklonosti kardiovaskularnim bolestima. Polovica ispitanica izabranih nasumce svakodnevno je uzimala folnu kiselinu (2,5 mg) i vitamine B6 (50 mg) i B12 (1 mg), a druga polovica placebo. Kliničko ispitivanje trajalo je 7,3 godine, od travnja 1998. do srpnja 2005. Ukupno 379 žena je oboljelo od raka, među kojima 187 u skupini koja je uzimala vitamine B i folnu kiselinu, a 192 u skupini koja je uzimala placebo. "Kod žena iz obiju skupina utvrđen je sličan rizik od nastanka raka dojke ili drugih vrsta raka sa smrtnim ishodom", zaključili su istraživači. (hina/metro-portal)