People who walk more or walk faster live longer, study finds
Rosacea treatments: What works?
For sleep apnea, a dental device may be as effective as CPAP
Carb cycling: What is it, and does it work?
Understanding orthorexia: Have your healthy eating goals gone too far?
Melatonin or magnesium: Can either supplement help you sleep?
Salmonella, E. coli, Cyclospora, and other germs that cause food poisoning: What you need to know
Naturally gluten-free foods
Harvard study: Healthier fats linked to longer life after prostate cancer diagnosis
Shingrix shingles vaccine linked with lower heart disease risks
Diseases & Conditions Archive
Articles
Marijuana use linked to higher risk of stroke in younger adults
Research we're watching
Younger adults who use marijuana appear to face a higher risk of stroke compared with those who don't use the drug, according to a report published Nov. 11, 2019, in the journal Stroke.
Researchers pooled data from a nationally representative survey from the CDC that included nearly 44,000 participants ages 18 to 44. About 14% reported using marijuana within the past month. Young adults who recently used marijuana were 1.8 times more likely to experience a stroke compared with nonusers. The risk was 2.5 times higher among frequent users (more than 10 days a month). Frequent marijuana users who also smoked regular cigarettes had three times the risk for nonusers.
Don’t stress about heart health
Chronic stress is associated with an increased risk of heart disease, heart attacks, and strokes. These strategies can help you manage it.
People often complain about stress, but it's actually a natural reaction with an essential purpose.
When the body senses danger, it starts its fight-or-flight response. Your nervous system releases hormones like adrenaline and cortisol, which jolt the body into a protective mode. Your heart pounds faster, muscles tighten, blood pressure rises, breathing quickens, and your senses sharpen.
Ex-smokers are not free from long-term lung damage
In the journals
People who quit smoking decades ago are still at risk for lung diseases like chronic obstructive pulmonary disease (COPD), according to a study published online Oct. 9, 2019, by The Lancet Respiratory Medicine.
Researchers looked at lung capacity — the amount of air in your lungs after taking a deep breath — among more than 25,000 people and analyzed the results based on whether the individuals smoked, had quit smoking, or had never smoked. Previous research has suggested that the decline in lung capacity that occurs with smoking levels off within a few years after people quit.
Is nighttime the right time for blood pressure drugs?
Taking these medications at bedtime rather than in the morning may make them more effective.
Many people take their medications as part of their morning ritual, along with a cup of coffee and the daily newspaper. But for blood pressure drugs, evening may be a better option. Last year, a large study found that taking blood pressure drugs before bed may lower the risk of serious heart-related complications more than taking the drugs in the morning (see "Benefits of bedtime blood pressure dosing").
The concept of chronotherapy, or adjusting medication dosing to a specific time of day, isn't new. There's not a great deal of evidence to support the practice with cardiovascular drugs, but it makes sense, says Dr. Naomi Fisher, director of the Hypertension Specialty Clinic at Harvard-affiliated Brigham and Women's Hospital.
What’s causing bladder pain or burning?
Infections aren't the only conditions that can cause discomfort.
Certain urinary symptoms are quite common, particularly in women: painful burning with urination, an urgent need to urinate like you can't hold it (urinary urgency), and urinating frequently (urinary frequency).
These symptoms can be caused by any of the following conditions.
Harnessing CRISPR to stop viruses
News briefs
A research team from Harvard reports that it has harnessed the powerful gene editing tool called CRISPR to recognize and kill viruses. The findings were published online Oct. 2, 2019, by Molecular Cell. CRISPR can alter strands of both DNA and RNA (a molecule related to DNA), which are built like strings of beads. Each bead consists of one of four chemicals called bases. CRISPR can recognize a specific sequence of bases (such as one that is characteristic of a particular virus), latch on to that sequence and cut it, and change the sequence to a different one. This can scramble the genetic sequence of a virus in such a way that the virus no longer can make copies of itself. The Harvard team used this technique to kill several viruses that are made of RNA — including influenza virus — in a laboratory dish. The next step will be to see if the CRISPR technique can also be used to kill viruses in a living animal. That will be much harder. However, if it works, the technique might someday help humans fight viral infections.
Image: © Bill Oxford/Getty Images
FDA approves new migraine medication
Research we're watching
If you suffer from migraine headaches, there's a new option available to relieve your pain. In October 2019, the FDA approved lasmiditan (Reyvow) to treat migraine pain in adults. Taken as a pill, it works for migraines either with or without an aura (a visual disturbance within the hour before migraine pain starts). Lasmiditan is not designed to prevent migraines. Lasmiditan is the first migraine treatment in a class of drugs known as serotonin (5-HT) 1F receptor agonists. In studies, researchers found that it could relieve pain and other migraine symptoms within two hours.
Migraines affect an estimated 28 million women in the United States, according to the American Migraine Foundation, and the World Health Organization ranks them among the top 10 disabling conditions. Pain and other symptoms, which may include nausea, sensitivity to light and temporary vision changes, result in lost work days, reduced productivity, and diminished quality of life for many people.
How better blood pressure control may benefit the brain
Research we're watching
Treating high blood pressure may do more than prevent heart attacks and strokes. In older adults, intensive blood pressure lowering may also conserve brain function, according to a new study.
Published online Oct. 14, 2019, by the journal Circulation, the study included 199 adults ages 75 and older, all with a systolic blood pressure value (the first number in a reading) of 150 or higher. Their brain scans also showed lesions in the brain's white matter, which contains nerve fibers that send signals from one part of the brain to another. The lesions, which reflect damaged small blood vessels, have been linked to a propensity for thinking and memory problems. About two-thirds of people over age 75 have white matter lesions, as do most people over age 90.
Troubled by migraines? Cut back on your caffeine drinks
In the journals
Over-the-counter pain medicines that contain caffeine can be effective at stopping some headaches. But drinking a large amount of caffeinated beverages might actually trigger a headache for some people with migraines, according to a study published in the August 2019 issue of The American Journal of Medicine.
Researchers recruited almost 100 people with migraines who suffered from fewer than 15 headaches per month. For six weeks, they recorded the timing and characteristics of each migraine and their intake of caffeinated beverages.
Hot flashes and heart health
This symptom is common in menopause, but frequent or persistent episodes could be a sign of higher risk for heart attack or stroke.
Researchers have begun to pay more attention to cardiovascular risk factors that are unique to women, such as early menopause (before age 40) and certain pregnancy complications. Recently they turned their attention to a common menopausal symptom that affects up to 85% of women: hot flashes.
Study results presented in September 2019 to the North American Menopause Society from the Study of Women's Health Across the Nation (SWAN) found that women who experience frequent or persistent hot flashes may be more likely than women who don't to experience a heart attack or stroke or other serious cardiovascular problems. (Researchers defined "frequent" hot flashes as having them six or more days in the previous two-week period. Women with "persistent" hot flashes reported those frequent hot flashes at 25% or more of study visits.)
People who walk more or walk faster live longer, study finds
Rosacea treatments: What works?
For sleep apnea, a dental device may be as effective as CPAP
Carb cycling: What is it, and does it work?
Understanding orthorexia: Have your healthy eating goals gone too far?
Melatonin or magnesium: Can either supplement help you sleep?
Salmonella, E. coli, Cyclospora, and other germs that cause food poisoning: What you need to know
Naturally gluten-free foods
Harvard study: Healthier fats linked to longer life after prostate cancer diagnosis
Shingrix shingles vaccine linked with lower heart disease risks
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