Caregiving Archive

There's no mercury to worry about, and flaxseed oil  does contain omega-3 fats...but not the best kind.

Troll the medical literature, and you'll come up with study after study showing that fish and fish oil are good for us, especially for our hearts but maybe also for our moods and immune systems. Various epidemiologic investigations have found that people who eat fish regularly are less likely to have heart attacks, suffer strokes, or die from sudden cardiac arrest. The definition of "regularly" varies, but it usually means at least a couple of times a week, although eating fish even once a month has been shown to make a difference.

Fish, and especially fish oil, have also been the subject of dozens of randomized clinical trials, most involving people with existing heart conditions. In large amounts (several grams a day), fish oil has been shown to nudge various cardiac risk factors ("good" HDL cholesterol, triglycerides, blood pressure) in the right direction.

DNA testing kits can upend identity and spark a multitude of questions for some children conceived with donor sperm and parents who hadn’t shared origin stories.

What if someone you love doesn't have an advance directive? That's common, although the underlying reasons may differ. Basic barriers include thinking that an advance directive isn't needed, not wanting to think about death or serious illness, not wanting to burden people, not knowing enough about advance directives and health care choices, needing help to fill out the forms, and lack of time with the doctor to discuss the matter. A person's ethnic or cultural background can also be a barrier: minorities tend to be more suspicious of health care providers and resistant to talking about or completing advance directives. According to AARP, African Americans in home health care and nursing homes are half as likely as whites to have advance directives.

To deal with this situation, try asking your loved one two simple questions, even if you think you know the answers.

In the journals

Spending just 20 minutes connecting with nature can help lower stress hormone levels, according to a study in the April 4, 2019, Frontiers in Psychology. Previous research has shown that interacting with nature reduces stress, but it is not clear how long and how often the engagement needs to be, or even what kind of nature experience is best.

Here, researchers asked 36 people to spend 10 minutes or longer, three days a week for eight weeks, in an outdoor place where they could interact with nature. The settings varied from yards to public parks to green areas near their place of work. They also either walked or sat during their nature time.

In the journals

An adequate intake of certain nutrients from food, but not supplements, is linked with a lower rate of death, according to a study in the April 9, 2019, Annals of Internal Medicine.

Researchers looked at the relationship between food and supplements and death from all causes among more than 30,000 adults. The results shows that adequate intakes of vitamin K, vitamin A, magnesium, zinc, and copper were associated with a lower risk of death from cardiovascular disease—but only if they came from food and not supplements.

A new study supports the use of noninvasive brain stimulation in people with severe depression who haven't responded to medication.

If medication isn't helping to ease severe depression, nonsurgical brain stimulation may be an effective alternative to consider, according to a study published online March 27 by The BMJ. Specifically, the study found that evidence seems to back the use of repetitive transcranial magnetic stimulation (rTMS) and electroconvulsive therapy (ECT) over other, newer brain stimulation therapies.

"Many psychiatrists are unaware of these techniques, or at least don't think to recommend them for their patients," says Dr. Daniel Press, associate professor of neurology at Harvard Medical School and the clinical director for the Berenson-Allen Center for Noninvasive Brain Stimulation at Beth Israel Deaconess Medical Center. "So, studies like this are helpful in raising the banner and reminding people that these are very effective options for a large percentage of people."

Research we're watching

Is your smartphone reducing your sleep quality? The National Sleep Foundation's most recent Sleep Health Index found that people who used technology such as phones, tablets, or computers in bed before they went to sleep scored lower on measures of sleep quality than those who didn't. Nearly 50% of American adults polled said they used technology in bed at least once a week, and nearly 30% said they did so every day. Some 21% of adults even said if they woke up during the night they would check their devices before going back to sleep. The National Sleep Foundation says to ensure the best sleep quality, it's best to leave digital distractions for the daytime hours and keep them out of bed.

Image: © Sisoje/Getty Images

Research we're watching

If your diet is heavy on red and processed meat, it might be time to make some adjustments. A study of nearly 500,000 people published in the April 17 International Journal of Epidemiology found that people who ate red or processed meat four or more times a week had a 20% higher risk of colorectal cancer than those who indulged less than twice a week. Risk of colorectal cancer rose 19% for every daily 25-gram serving of processed meat, which is equivalent to a slice of ham. And for every 50-gram-a-day serving of red meat — equal to a thick piece of roast beef — risk of colorectal cancer rose by 18%. Alcohol was also linked to a higher risk of colon cancer: just a half pint of beer per day increased colon cancer risk by 8%.

But the study wasn't all bad news. A number of foods were associated with a lower risk of colon cancer, including high-fiber selections such as bread and breakfast cereals. But higher fiber intake from vegetables and fruits did not appear to reduce risk.