Breast Cancer Archive

Research we're watching

While cesarean delivery may mean longer recovery time after your baby is born, it may make it less likely that someday you'll need to cross your legs when you cough or sneeze.

A study in the Dec. 18, 2018, issue of JAMA found that women who delivered their first baby by cesarean had half the risk of developing stress urinary incontinence (which causes urine to leak when you cough or sneeze) or overactive bladder, compared with first-time moms who had a spontaneous vaginal birth.

With summer's approach come plans for travel, including flying long distances. But the prospect of a long flight often raises health concerns. Especially in passengers who are older or have certain conditions, air travel and the related stress can have an impact on health. Here are a few trouble areas and some precautions you can take.

Deep-vein thrombosis (DVT). Not all experts agree on an association between DVT (blood clots in the legs) and air travel. Symptoms may not occur for several days, so it's difficult to establish a cause-and-effect relationship. If there is one, it's likely due to prolonged inactivity. Limited airline space can discourage moving about. Dry cabin air may also increase the risk of DVT.

This ancient practice, which consists of sequences of fluid movements, can improve your balance and help you prevent falls.

Tai chi is a form of gentle exercise that experts say can help improve your mood, reduce your stress level, and help keep your heart healthy. It can also benefit your bones.

"There's very strong evidence that tai chi is one of the best weight-bearing exercises to reduce the risk for falls," says Peter Wayne, faculty editor of the Harvard Special Health Report An Introduction to Tai Chi and director of the Osher Center for Integrative Medicine.

Research we're watching

Need another reason to make your oral health a priority? Researchers at Harvard's T.H. Chan School of Public Health found that people with a history of gum disease also have a higher risk of stomach and esophageal cancers. They outlined their work in a letter published online in July 2020 by the journal Gut.

The researchers looked at two large studies involving a total of nearly 150,000 men and women. They found that during the studies' follow-up periods, which ranged from 22 to 28 years, people who had gum disease had a 43% higher risk of developing esophageal cancer and a 52% higher risk of developing stomach cancer compared with people whose gums were healthier. The authors proposed some ideas as to what was driving increased risk, such as greater exposure to oral bacteria or harmful substances produced by those bacteria. The authors said more study is needed to confirm their results.

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Having gum disease increases your risk for many health problems other than tooth loss, such as heart disease. To add to the list, a study from Harvard summarized in a letter published online July 20, 2020, by the journal Gut suggests that the microbes camping out between your teeth and gums may affect your risk for cancers of the stomach and esophagus. Harvard scientists analyzed health data from two large studies that included almost 150,000 men and women. In up to 28 years of follow-up, people with a history of periodontal (gum) disease were 43% more likely to develop esophageal cancer and 52% more likely to develop gastric (stomach) cancer compared with people whose gums were healthier. The risk was even higher in those with gum disease severe enough to cause tooth loss. The study is observational and doesn't prove that gum disease causes cancer, but it could mean that someday doctors will include a look at your gum health when assessing your overall risk. Fortunately, it's easy to prevent gum disease. The American Dental Association recommends that you brush your teeth twice per day, floss at least once per day, and get a dental exam and cleaning regularly.

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In the journals

Greater amounts of physical activity during the day are associated with lower risk of dying from cancer, according to a study published online June 18, 2020, by JAMA Oncology.

The study involved about 8,000 people, average age 70, who did not have a cancer diagnosis. Each wore an accelerometer on the hip during waking hours for a week to collect movement data.

The US Preventive Services Task Force has updated its lung cancer screening guidelines, to open up the screening to a wider range of people based on their age and smoking history, with the goal of detecting more cancers and reducing deaths.

Could a closer look at your mammogram help guide efforts to prevent heart disease?

Your mammogram could offer a glimpse at more than just the health of your breasts. It may also provide important clues about your heart.

When a radiologist reads a mammogram, she or he sometimes sees little white streaks that look like lines of chalk inside the arteries of your breast. These lines are actually deposits of calcium called arterial calcifications. If you have them, it could mean that you have similar deposits in other arteries inside your body, including those that bring blood to your heart muscle — a known risk factor for heart disease.

Research we're watching

If you've ever experienced a bout of bacterial vaginosis, a vaginal infection that affects anywhere from 15% to 50% of reproductive-age women, a study published May 14, 2020, in The New England Journal of Medicine may be of interest. It found that women who inserted a type of probiotic called Lactobacillus crispatus (Lactin-V) in their vagina twice per week were less likely to have a recurrence of bacterial vaginosis than women who did not. Experts don't fully understand what causes bacterial vaginosis, but it is associated with an overgrowth of some microorganisms (such as Gardnerella vaginalis or Prevotella), which outnumber healthier types of vaginal bacteria, including a common one called Lactobacillus. In many cases, the condition will recur after treatment. All of the 228 women in the study were initially treated for bacterial vaginosis with the standard topical antibiotic metronidazole (MetroGel Vaginal). But after that treatment, 152 of the women were assigned to use Lactin-V for an additional 11 weeks. The remainder of the group got a placebo treatment. Researchers found that only 30% of the Lactin-V group had a recurrence of bacterial vaginosis by week 12, compared with 45% of the placebo group.

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Research we're watching

A national coalition of women's health organizations recommends screening all adolescent girls (ages 13 and older) and adult women for anxiety. The goal is to improve detection and treatment for this common condition. The Women's Preventive Services Initiative (WPSI) recommends screening to look for all types of anxiety disorders, such as panic disorder, social anxiety disorder, and generalized anxiety disorder, in addition to depression screenings, which are already recommended for adults, says the WPSI. It would be up to individual clinicians to determine how often to do the screenings and to refer women and girls for follow-up examinations and screening.

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