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Based upon recent clinical investigation findings, Vitamin D is the only remaining vitamin that may well have significant cancer and cardiovascular disease prevention properties. Recent sizeable-scale prospective randomized clinical analysis trials have not only failed to identify a cancer prevention role (beyond a healthy balanced diet) for Vitamin E, Vitamin C, folate, and beta-carotene (a member of the Vitamin A family members) supplements, but information from these trials have strongly suggested an increased risk of adverse well being outcomes, at least in some sub-groups of patients, with supplements of a variety of of these vitamins.
Alas, as is generally the case with public wellness studies, the clinical data relating to Vitamin D is not without having inconsistency, and the information on Vitamin D and cancer incidence has not been uniformly positive, either. But, several current epidemiological and prospective clinical research studies have at least suggested that low levels of Vitamin D in our bodies might possibly, in reality, be related with a greater risk of developing specific cancers (look for a alot more comprehensive evaluation of the information on Vitamin D and cancer prevention in my forthcoming book, "A Cancer Prevention Guide for the Human Race"). Moreover, decreased blood levels of Vitamin D also seem to be linked to an elevated risk of cardiovascular illness as effectively.
Now, a newly published prospective clinical study trial suggests that decreased levels of Vitamin D in the blood appears to be related with an elevated risk of breast cancer recurrence, and death due to breast cancer, in females previously diagnosed with early stage breast cancer. In this study, which has just been published in the Journal of Clinical Oncology, 512 girls with early-stage breast cancer, diagnosed between 1989 and 1996, had been prospectively followed for an typical of nearly 12 years. Blood was routinely collected from all females following their diagnosis of breast cancer, as a component of this clinical research trial. The girls were then closely followed for recurrence of their breast cancer, and for death due to breast cancer and other causes.
As with other related studies, a surprisingly sizeable quantity of these otherwise wholesome females were discovered to have decreased levels of Vitamin D in their blood. In 38 percent of these ladies, Vitamin D levels were significantly below typical levels, whilst an additional 39 percent of these ladies had mildly decreased levels of circulating Vitamin D. Amongst these 512 females, 116 skilled metastatic recurrence of their breast cancer for the duration of the course of this prospective clinical study, when 87 women died with evidence of recurrent breast cancer.
The results of this prospective clinical study were rather compelling. The 10-year survival rates for these girls with early-stage breast cancer varied drastically according to the level of Vitamin D in their blood. Survival at 10 years following breast cancer diagnosis was 74 percent, 85 percent, and 85 percent for girls with significantly deficient, mildly deficient, and regular Vitamin D levels, respectively. Based upon the analysis of all of the data from this study, breast cancer patients with a significant deficiency of Vitamin D were observed to be almost twice as likely (71 percent elevated risk) to experience a recurrence of their breast cancer, and they had been 60 percent much more most likely to die, when compared to the patients who had normal levels of Vitamin D in their blood.
Although this clinical study included somewhat couple of patients, it does, nonetheless, raise the possibility that a substantial deficiency of Vitamin D may well be related with a worse prognosis in patients with early-stage breast cancer. One other related locating in this study was that rather low levels of Vitamin D also appeared to be related with breast tumors with additional aggressive features when examined under the microscope, which is consistent with other studies that have suggested a link in between "high grade" breast tumors and decreased blood levels of Vitamin D. At the very same time, as I have already mentioned, the offered information relating to Vitamin D levels (and the use of Vitamin D supplements) has not been consistent, and other clinical studies have failed to identify a link among Vitamin D and breast cancer risk. There is also some experimental information on the market suggesting that rather high levels of Vitamin D in the blood may perhaps also be associated with poorer outcomes in females with breast cancer (similar findings have also been reported for excessive Vitamin D levels and cardiovascular illness outcomes). Taken together, the data from these a number of studies strongly suggest that there might be a fairly narrow "optimal range" of Vitamin D levels in the blood that are related with a decreased risk of breast cancer, a decreased risk of breast cancer recurrence (and death), and a decreased risk of cardiovascular illness and that excessively high or low levels of this vitamin may have adverse well being effects in these locations.
The next obvious step is to conduct bigger prospective clinical study trials that secretly randomize patient volunteers to obtain different doses of Vitamin D, versus placebo (sugar) pills. There are a variety of such studies already underway (or about to commence), involving each cancer patients and patients without having cancers. Then again, it will likely take one other 10 years for mature data to emerge from these ongoing studies. Meanwhile, my suggestions is to eat a healthy and nicely-balanced diet. If you are a breast or prostate or colorectal cancer survivor, or if you have one or extra risk elements for these cancers (or for cardiovascular disease), then you might possibly also want to ask your physician to measure the level of active Vitamin D in your blood. If you are drastically deficient in Vitamin D, then your physician may give some thought to the possibility of Vitamin D supplementation in conjunction with cautious serial monitoring of your Vitamin D levels.
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Disclaimer: As always, my guidance to readers is to seek the guidance of your physician before producing any important adjustments in medications, diet plan, or level of physical activity.
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