Q: Is it true that pomegranate juice protects against prostate cancer?
A: Pomegranate juice may turn out to be very useful in the treatment of prostate cancer and, perhaps, its prevention, as well. Here's the story: in 2005, researchers at the University of Wisconsin tested various doses of pomegranate extract on human prostate cancer cells in the lab. The higher the dose of the extract, the more cancer cells died. Then, in tests with mice that were injected with human prostate cancer cells, the animals that received the highest concentration of pomegranate extract had the least progression of prostate cancer and declining levels of prostate specific antigen (PSA), a marker for prostate cancer in humans. In a comparison group of mice that received only water instead of pomegranate extract, tumors grew much faster. Read more...
Jumat, 26 Februari 2010
Sabtu, 20 Februari 2010
Prostate Cancer Screening: 50 Percent False Positives
As many as 50 percent of all prostate cancer (http://www.dreddyclinic.com/findinformation/cc/prostatecancer.htm) diagnoses may be cases of over-diagnosis, according to a study published in the British Medical Journal.
Over-diagnosis refers to the detection of a cancer that, if left untreated, would never have any negative effects on a person's life. This happens with cancers that grow slowly and do not spread to other organs, so that a patient dies of other causes before ever experiencing any symptoms.
Because prostate cancers tend to be very slow growing, the U.S. Preventive Services Task Force has recommended against screening men over the age of 74 for prostate cancer. Treatments for the disease can have severe side effects, including impotence and incontinence, and may even increase the risk of early death.
Another paper, published in the same issue of the journal, found that the prostate specific antigen (PSA) test commonly used to assess prostate cancer risk cannot reliably predict this risk in most cases.
The PSA is a marker of prostate inflammation, which in turn is believed to be a risk factor for prostate cancer. Yet in a study on 1,540 Swedish men, researchers found that PSA levels were not correlated with prostate cancer risk. The only exception was levels below 1 nanogram per mililiter, which suggest a prostate cancer risk of almost zero. Read more...
Over-diagnosis refers to the detection of a cancer that, if left untreated, would never have any negative effects on a person's life. This happens with cancers that grow slowly and do not spread to other organs, so that a patient dies of other causes before ever experiencing any symptoms.
Because prostate cancers tend to be very slow growing, the U.S. Preventive Services Task Force has recommended against screening men over the age of 74 for prostate cancer. Treatments for the disease can have severe side effects, including impotence and incontinence, and may even increase the risk of early death.
Another paper, published in the same issue of the journal, found that the prostate specific antigen (PSA) test commonly used to assess prostate cancer risk cannot reliably predict this risk in most cases.
The PSA is a marker of prostate inflammation, which in turn is believed to be a risk factor for prostate cancer. Yet in a study on 1,540 Swedish men, researchers found that PSA levels were not correlated with prostate cancer risk. The only exception was levels below 1 nanogram per mililiter, which suggest a prostate cancer risk of almost zero. Read more...
Senin, 15 Februari 2010
Prostate Cancer Stimulates Nerve Growth
(HealthDay News) -- Prostate cancer can promote the growth of new nerves that are associated with more aggressive tumors, U.S. researchers report.
It's been shown that prostate cancer follows the growth of nerves, but this is the first study to find that prostate tumors actually promote nerve growth, says a team at Baylor College of Medicine, Houston. The new finding is comparable to the discovery that tumors promote the growth of new blood vessels (angiogenesis) to nourish themselves, the team said.
"This is the first report of this phenomenon. It represents an important new target in prostate cancer treatment, as prostate cancers are more aggressive when neurogenesis is present," study first author Dr. Gustavo Ayala, a professor of pathology and urology, said in a college news release. Read more...
It's been shown that prostate cancer follows the growth of nerves, but this is the first study to find that prostate tumors actually promote nerve growth, says a team at Baylor College of Medicine, Houston. The new finding is comparable to the discovery that tumors promote the growth of new blood vessels (angiogenesis) to nourish themselves, the team said.
"This is the first report of this phenomenon. It represents an important new target in prostate cancer treatment, as prostate cancers are more aggressive when neurogenesis is present," study first author Dr. Gustavo Ayala, a professor of pathology and urology, said in a college news release. Read more...
Selasa, 09 Februari 2010
From Risky Health Status to a Better Life
(HealthDay News) -- It's easy to roll your eyes when a doctor prescribes diet and exercise as a cure for what ails you.
But it works. It worked for me.
In the past year, I used diet and exercise to lose more than 60 pounds, beat back pre-diabetes and lower my cholesterol. I did it armed with knowledge given to me by professionals and with a lot of thought and hard work.
My family physician, Dr. Paul Weaver of West Salem Family Practice in Oregon, ordered a blood test for me in February. The results weren't good.
My blood glucose had reached the pre-diabetic stage. My cholesterol was dangerously high. Liver enzymes were elevated. I had the beginnings of metabolic syndrome, a group of conditions that combine to greatly raise the risks for serious heart problems.
Weaver told me I had to take steps to save my health or I was going to develop diabetes.
"There's a point of irreversibility, where you've killed off enough insulin receptors that you can't go back to normal even through diet and exercise," he said. Read more...
But it works. It worked for me.
In the past year, I used diet and exercise to lose more than 60 pounds, beat back pre-diabetes and lower my cholesterol. I did it armed with knowledge given to me by professionals and with a lot of thought and hard work.
My family physician, Dr. Paul Weaver of West Salem Family Practice in Oregon, ordered a blood test for me in February. The results weren't good.
My blood glucose had reached the pre-diabetic stage. My cholesterol was dangerously high. Liver enzymes were elevated. I had the beginnings of metabolic syndrome, a group of conditions that combine to greatly raise the risks for serious heart problems.
Weaver told me I had to take steps to save my health or I was going to develop diabetes.
"There's a point of irreversibility, where you've killed off enough insulin receptors that you can't go back to normal even through diet and exercise," he said. Read more...
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Rabu, 03 Februari 2010
Goji: A Miracle Health Drink?
Are you familiar with Himalayan Goji Juice? I have heard many health claims, including strong anti-aging effects for goji berries.
Goji berries seem to be the continuing rage among those who think a single food can accomplish nutritional miracles. The health claims being made for them and their juice are wide-ranging: anti-aging effects; implied benefits in the prevention and treatment of cancer, diabetes, arthritis, digestive problems; and, of course, weight loss, always a sure-fire way to attract customers. Although promoters mention "studies" that supposedly support these effects, to my knowledge no scientific studies investigating specific actions against disease have been published in peer-reviewed journals. Read more...
Goji berries seem to be the continuing rage among those who think a single food can accomplish nutritional miracles. The health claims being made for them and their juice are wide-ranging: anti-aging effects; implied benefits in the prevention and treatment of cancer, diabetes, arthritis, digestive problems; and, of course, weight loss, always a sure-fire way to attract customers. Although promoters mention "studies" that supposedly support these effects, to my knowledge no scientific studies investigating specific actions against disease have been published in peer-reviewed journals. Read more...
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