Cancer Archive

Advances in breast cancer research have led to more personalized treatments, based on subtyping and more sophisticated testing. A risk assessment test can predict that some women do not need chemotherapy but will benefit from hormone therapy, and who might benefit more from both treatments.

Can adopting a healthier diet help fight prostate cancer? That's a question men newly diagnosed with prostate cancer often ask their doctors.

Several studies have shown that in countries where men eat a typical "Western" diet containing a large amount of meat, the incidence of prostate cancer, especially aggressive prostate cancer, is higher than in countries where plant-based foods are a primary part of the diet. Unfortunately, these studies weren't designed to prove cause and effect. So for now, definitive answers about prostate cancer and diet aren't yet in — although researchers are actively studying this topic.

In the last decade, overall rates of colorectal cancer have been falling among the general population in the US. However, African Americans are more likely to develop colorectal cancer at younger ages, and to die from it. The reasons for this disparity are unclear, but they are rooted in socioeconomic and racial inequities.

News briefs

The pandemic may have you feeling reluctant to seek medical treatment. But when it comes to cancer care, even a short delay in treatment may lead to deadly outcomes, according to a review of 34 studies published online Nov. 4, 2020, by BMJ. Researchers evaluated treatment delay and survival in more than a million people who had cancer of the bladder, breast, colon, rectum, lung, cervix, or head and neck. Each four-week delay in treatment — whether surgery, radiation therapy, or medication (such as chemotherapy or immunotherapy) — was associated with an increase of 6% to 8% in the likelihood of dying during the study period. Scientists say delays of up to eight weeks and 12 weeks further increased the risk of death. For example, in women who delayed breast cancer surgery by eight weeks, there was a 17% increased death risk; women who delayed surgery by 12 weeks had a 26% increase. Keep in mind, there are lots of unavoidable reasons why cancer treatment might be delayed, such as not being strong enough to undergo procedures or scheduling issues at a treatment center. But if there isn't a good reason to delay, it's best to get treatment as soon as possible.

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Many studies have explored the relationship between hair dye use and risk of cancer or cancer-related death, with conflicting findings. In a recent study, researchers analyzed survey data from over 117,000 women collected over several decades regarding hair dye use and overall cancer risk.

Screening for colorectal cancer can lower mortality, but it varies in effectiveness and is not always possible to perform, so alternatives are needed. Researchers analyzing studies found evidence for regular use of low-dose aspirin, leading the US Preventive Services Task Force to recommend it for some people.

In the journals

Colon cancer prevention involves following a healthy lifestyle — for instance, exercising and not smoking — and periodically getting a screening test such as a colonoscopy. But what impact do diet and medications have? A recent review of 80 statistical analyses published over the last 40 years explored this question. The review was published online Oct. 1, 2020, by the journal Gut.

Over all, the results were disappointing in that no specific drug, food, or supplement stood out in the body of evidence. Yet some of the reviewed studies did show a link between a lower risk of colon cancer and use of nonsteroidal anti-inflammatory drugs (NSAIDs) — such as aspirin, ibuprofen (Advil, Motrin), and naproxen (Aleve) —and a higher intake of fruits, vegetables, and fiber. But other studies did not.

Drinking no more than four or five 8-ounce cups of coffee per day—equal to about 400 milligrams of caffeine—helps people get the drink's health benefits with a lower risk of caffeine side effects like anxiety and nervousness.

Bleeding indicates cancer only in a small percentage of cases, even though endometrial cancers are on the rise in American women.

You've gone through menopause and you thought your periods were a thing of the past — but suddenly, you're bleeding again, more than a year after your last period.

Should you be concerned?

The good news according to an analysis published in JAMA Internal Medicine, is that most likely your bleeding is caused by a noncancerous condition, such as vaginal atrophy, uterine fibroids, or polyps. But the study also reinforces the idea that postmenopausal bleeding should always be checked out by your doctor to rule out endometrial cancer, a cancer of the uterine lining, says Dr. Ross Berkowitz, William H. Baker Professor of Gynecology at Harvard Medical School.