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Stroke Archive
Articles
Low LDL and stroke: A closer look
When it comes to understanding this link, the devil is in the details.
When we talk about LDL cholesterol, it's always described as bad or harmful — and with good reason. High blood levels of this artery-clogging substance boost the risk of heart disease, the nation's leading cause of death. The more you can lower your LDL cholesterol (through diet, exercise, or medications), the lower your risk of a heart attack. For heart attack survivors, national guidelines recommend aiming for an LDL cholesterol level of less than 70 milligrams per deciliter to prevent a second heart attack.
In the past year, however, two studies in the journal Neurology reported a higher risk of hemorrhagic (bleeding) stroke in people with LDL levels of 70 and lower. While that sounds worrisome, a closer look at the findings can put these results into perspective.
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.
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.
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.
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.)
Who needs aspirin?
Age, family history, and other risk factors determine if daily aspirin can help prevent a heart attack or stroke.
For many of us, aspirin was the go-to medicine of our youth. Everything from headaches, colds, and general aches and pains were treated with two aspirin and a glass of water.
For decades, aspirin was widely believed to be a safe way to protect healthy adults from heart attacks and strokes. But over the past couple years, new research has questioned this premise and many doctors have already stopped prescribing aspirin for adults at low risk of cardiovascular disease.
Flu shot may lower risk of early death in people with high blood pressure
In the journals
Need another reason to get your annual flu shot? It could protect you from a fatal heart attack or stroke if you suffer from high blood pressure, according to research presented at a 2019 joint conference of the European Society of Cardiology Congress and the World Congress of Cardiology.
Previous research has found that the inflammation from a flu infection can trigger a heart attack or stroke, and people with high blood pressure are especially at high risk.
A major change for daily aspirin therapy
New recommendations could affect millions of people.
You may remember a time when taking a daily baby aspirin was almost a rite of passage for generally healthy older adults. The idea was that, for people with a low to moderate risk for heart disease, aspirin therapy was a simple and cost-effective way to help prevent a heart attack or stroke.
But taking aspirin increases the risk for bleeding in the stomach and brain (see "How aspirin affects the body").
Ultra-processed foods linked to poor heart health
Research we're watching
Eating ultra-processed foods — such as packaged snacks, sugary cereals and drinks, chicken nuggets, and instant soup — may leave people more prone to heart disease and an early death, two new studies suggest. Both were published May 29 in The BMJ.
One study followed more than 105,000 adults for just over five years. Researchers found that for every 10% increase in the amount of ultra-processed foods people ate, their risk of a heart attack, stroke, or other serious cardiovascular event was 12% higher. The other study tracked nearly 20,000 people over an average of 10 years. People who ate more than four servings of ultra-processed foods daily had a 62% higher risk of dying from all causes compared with those who ate only two servings per day.
Recent Blog Articles
Harvard Health Ad Watch: Got side effects? There's a medicine for that
Packing your hurricane go bag? Make provisions for your health
Does your child need to bathe every day?
Evoking calm: Practicing mindfulness in daily life helps
How well do you worry about your health?
Do parasocial relationships fill a loneliness gap?
Feel like you should be drinking less? Start here
How to help your preschooler sleep alone
Is the portfolio diet the best diet ever?
Which skin creams are most effective for eczema?
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