Breast Cancer Archive

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.

News briefs

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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Research we're watching

Move your body more and skip the alcohol to reduce your risk of cancer, says the American Cancer Society in its new cancer prevention guidelines. The updated recommendations, published online June 9, 2020, by CA: A Cancer Journal for Clinicians, also recommend cutting down on sugar and red meat, based on a review of the most recent scientific evidence.

Specifically, the new guidelines say that instead of exercising moderately for 150 minutes a week or doing 75 minutes of vigorous activity, adults should try to squeeze in 150 to 300 minutes of moderate activity or 75 to 150 minutes of vigorous activity — and that the higher number should be the target. As for diet, people interested in reducing their risk of cancer should aim to eat more plants, including whole (not refined) grains and at least two-and-a-half cups of colorful fruits and vegetables each day, and less sugar and meat (specifically limiting processed and red meat whenever possible). In the past, the ACS recommended moderate alcohol intake, but the new guideline says it's better to avoid alcohol altogether if possible. People who do drink should still stick to the previous recommended limits: no more than one drink a day for women and two drinks a day for men.

Blood testing to detect early cancer may be closer to reality than ever before.

When it comes to most cancers, the sooner they're found, the better. "Identifying cancer in its earlier stages offers improved chances for treating it before it can grow and spread," says Dr. Brian Wolpin, director of the Gastrointestinal Cancer Center at Harvard-affiliated Dana-Farber Cancer Institute.

Unfortunately, there are not reliable tools to screen for most cancers. Examples of effective screening tests that do exist now include colonoscopies that look for polyps and early colorectal cancers, as well as imaging tests like mammograms for early signs of breast cancer and chest CT scans for localized lung cancer among former or current smokers.