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Prostate Cancer
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Definition of Prostate Cancer
Prostate cancer is a disease in which cells in the prostate gland become abnormal and start to grow uncontrollably, forming tumors.
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Low-Carb Diet May Slow Prostate Tumor Growth
TUESDAY, Nov. 13 (HealthDay News) -- In mice, a low-carbohydrate diet slowed prostate tumor growth, possibly because fewer carbohydrates leads to a drop in insulin production, U.S. researchers say.
"This study showed that cutting carbohydrates may slow tumor growth, at least in mice. If this is ultimately confirmed in human clinical trials, it has huge implications for prostate cancer therapy through something that all of us can controls, our diets," lead researcher Dr. Stephen Freedland, a urologist at Duke University Medical Center, said in a prepared statement.
Previous studies linked insulin and a related substance called insulin-like growth factor (IGF) with the growth of prostate tumors in mice. Freedland and his colleagues theorized that reducing levels of these substances might slow prostate tumor growth.
They compared tumor growth in mice eating either a low-carbohydrate diet; a low-fat but high-carbohydrate diet; or a Western diet high in fat and carbohydrates.
Mi
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Why Obese Men Post Lower PSA Levels
TUESDAY, Nov. 20 (HealthDay News) -- In recent years, doctors have learned that they need to adjust the results of blood tests to properly diagnose prostate cancer in obese men, but now researchers think they know why.
It turns out that larger men have more blood, which dilutes the levels of the protein called PSA -- a key indicator of prostate trouble.
The new study doesn't definitively prove why overweight and obese men with prostate cancer tend to score lower on the PSA (prostate specific antigen) test, but it does give doctors an idea about what may be going on, said study co-author Dr. Stephen Freedland, an assistant professor of urology and pathology at Duke University.
"PSA is not a bad test for obese men. We just need to know how to use it," he said. "If we use it correctly, it will be just as good as in normal-weight men."
Prostate cancer strikes one in six men, mostly those over the age of 65, according to the Prostate Cancer Foundation.
Older men often routine
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Prostate Cancer Treatments Often Compound Existing Health Problems
MONDAY, Nov. 26 (HealthDay News) -- More than a third of prostate cancer patients may receive treatments that are inappropriate because of problems they are already having with urinary, bowel or sexual function, a new study suggests.
These mismatches might occur, because patients don't give enough information to their doctor or because their doctor favors a particular type of treatment, according to the report in the Nov. 26 online edition of Cancer.
"We found an awful lot of patients whose treatment seemed to be contraindicated by urinary, bowel or sexual problems they had before they got treated," said lead researcher Dr. James Talcott, from the Center for Outcomes Research at Massachusetts General Hospital Cancer Center in Boston. "That's pretty good evidence that information wasn't transmitted or didn't factor in with the treatment decision."
Unlike other cancers, there are several treatment options for prostate cancer. The treatment that is best for an individual patient
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Night Shift Work May Heighten Risk for Cancer
WEDNESDAY, Dec. 5 (HealthDay News) -- Workers on the night shifts at bars, convenience stores, hospitals and other venues may be putting themselves at heightened risk for cancer.
That's the conclusion of an international group of experts who plan to add night shift work to the official list of "probable" carcinogens.
A team of scientists at the International Agency for Research on Cancer (IARC) pored over human epidemiological data, animal study results, and studies looking at possible mechanisms linking night work to tumor formation.
"All three of those things suggested that, yes, this might be something that could contribute to human cancer," said Aaron Blair, scientist emeritus at the U.S. National Cancer Institute and chairman of the IARC Working Group that evaluated the shift work-cancer link.
The IARC -- a branch of the World Health Organization -- was expected to publish its findings in the December issue of The Lancet Oncology.
Although numerous studies have sugg
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Green Tea, Fruit Extracts Touted as Potential Cancer Fighters
THURSDAY, Dec. 6 (HealthDay News) -- A gel derived from black raspberries, a fruit beverage and old-fashioned green tea all hold potential promise as ways to treat or prevent different types of cancer, preliminary research suggests.
"Until now, foods have not been considered good treatments for chronic illness, especially tackling tumors," Greg Jardine, a biochemist at Dr. Red Nutraceuticals in Australia, said at a teleconference Thursday. In fact, "foods can be medicine," added Jardine, co-author of a manufacturer-funded study of a "punch" that appeared to reduce the growth of prostate cancer in mice.
In addition to Jardine's study, two others -- one with people and one with rats -- suggest that a black raspberry gel can reduce oral cancer lesions and green tea can prevent colorectal cancer.
The studies, which are all small and need further confirmation, were presented at the American Association for Cancer Research's Sixth Annual International Conference on Frontiers in Can
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Obesity, Diabetes Linked to Cancers
FRIDAY, Dec. 7 (HealthDay News) -- Obesity and diabetes -- risk factors so often linked to heart disease -- can also affect the incidence and severity of cancer, a collection of four new studies suggests.
The findings, presented Friday at the American Association for Cancer Research's Sixth Annual International Conference on the Frontiers of Cancer Prevention Research in Philadelphia, link weight gain and diabetes to a number of malignancies, including breast, prostate and colorectal cancer.
"All of these are consistent with what we would expect with the occurrence of each of these cancers or cancer survival," said Elizabeth Platz, associate professor of epidemiology at the Johns Hopkins Bloomberg School of Public Health. "Metabolic perturbations enhance certain cancers. Insulin and other hormonal factors influence cell growth and make cells multiply."
Women with diabetes have a 50 percent increased risk of developing colorectal cancer, according to the first study, by researc
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Most Medicare Recipients Ignore Colorectal Cancer Screening
MONDAY, Dec. 10 (HealthDay News) -- The majority of Americans in Medicare aren't getting screened for colorectal cancer, a major killer, even though the screening is free, a new study finds.
In fact, the percentage of enrollees in Medicare, the federal health insurance program for older Americans, getting screening tests such as colonoscopies has declined since the program began paying for them, the study said.
An assessment of 153,469 Medicare members identified in 1998 found that 29.2 percent of them were screened for colorectal cancer between 1991 and 1997, when Medicare began paying for screening tests. Only 25.4 were screened between 1998 and 2004, after screening was covered by Medicare, the study found.
Failure to get those tests costs lives, said study author Dr. Gregory Cooper, interim chief of gastroenterology at University Hospitals Case Medical Center in Cleveland.
"We know that the survival curve is strongly related to the state at which the cancer is diagnosed
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High Meat Consumption Linked to Heightened Cancer Risk
A quarter-pound hamburger or a small pork chop eaten daily could put you at increased risk for a variety of cancers, U.S. government health researchers report. The more red meat and processed meat you eat, the greater your risk, the researchers from the National Cancer Institute concluded.
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Gene Variant Tied to More Aggressive Prostate Cancer
Men with a variant in the tumor suppressor gene DAB2IP may have an increased risk of aggressive prostate cancer, say researchers who examined genetic clues in Swedish and American men with and without the disease. The researchers identified a single nucleotide polymorphism (SNP) -- a single base change in DNA -- located in the DAB2IP gene that was associated with aggressive prostate cancer in European and African-American men.
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Close-up View of Robotic Surgery for Prostate Cancer61 min. 1 sec.
This prostate cancer surgery video shows how laparoscopic surgery offers potential advantages to patients, including less trauma through smaller incisions, faster recovery and less overall blood loss during surgery.
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