Stroke Archive

Diverticular disease develops due to a lack of dietary fiber, and is most common in the elderly, but many people never realize they have it because there are few symptoms.

Ask the doctor

Q. Will we have a vaccine to prevent COVID-19 and, if so, when?

A. I'm optimistic because never in human history has so much scientific time and effort been spent trying to make a vaccine. But it won't it be easy. As fast as possible, the vaccine scientists need to prove, first, that a vaccine is safe (minimal side effects) and, second, that it works to reduce a person's risk of getting the disease. Then they need to produce enough of it to immunize most of the 7.6 billion people on earth. Doing all of this within two to three years of a new virus being discovered would be an unprecedented achievement.

Research we're watching

If you suffer from the common skin condition eczema, you may have a higher risk of breaking a bone compared with someone who doesn't have the condition, according to a study published in the February 2020 issue of The Journal of Allergy and Clinical Immunology. The study authors found that the 500,000 people in the study who had eczema, which causes itchy dry patches on the skin, were 7% to 18% more likely to break a bone in the wrist, hip, pelvis, or spine when compared with more than 2.5 million participants who didn't have the condition. Researchers said it's not clear if this elevated fracture risk was related to the eczema itself or whether other factors caused the association. For example, the increase in risk could have been related to medications people took to treat eczema. Even so, if you have eczema, the study authors say it may be worth asking your doctor whether you might be at increased risk for osteoporosis.

Image: © vadimguzhva/Getty Images

In the journals

Scientists continue to explore the health benefits versus risks of aspirin therapy. One new analysis suggests that taking aspirin may protect against several types of digestive tract cancers. The results were published online April 1, 2020, by Annals of Oncology.

Researchers examined 113 observational studies of cancer in the general population. They found that individuals who took aspirin regularly — at least one or two tablets a week — had significantly lower rates of cancers of the bowel, stomach, gallbladder, esophagus, pancreas, and liver, compared with people who did not take aspirin.

Lifestyle improvements, such as quitting smoking and exercising more, can reduce your risk of a stroke.

A stroke may seem like a sudden, uncontrollable event — a lightning strike out of the blue. But in reality, stroke risk often builds over time, and many strokes are preventable. A study published in the May 2020 issue of Stroke found not only that lifestyle changes can help you head off a potential stroke, but also that you can still reduce your risk even if you don't make these changes until later in life.

"What is novel about our study is that we found that even in middle-aged women, changing lifestyle has a large effect on preventing stroke," says Dr. Goodarz Danaei, senior author of the study and the Bernard Lown Associate Professor of Cardiovascular Health at the Harvard T.H. Chan School of Public Health. "Even in the sixth decade of life, lifestyle changes can still prevent up to a quarter of all strokes." The average age in women for a first stroke is 75.

It has been known for some time that air pollution causes heart and lung diseases. Now, results from three different studies on populations in different parts of the world show an association between higher levels of air pollution and greater risk of cognitive impairment, dementia, and Alzheimer’s disease.