Health/Fitness « Weekly Gravy

Doing some squats during commercial breaks or between YouTube videos can help couch potatoes keep their minds sharp, a new study suggests. Young volunteers who did short sets of squat exercises every now and then while relaxing performed better in brain games than when they simply sat around for hours, researchers report. Short bursts of exercise might help the brains of people who spend long periods on the couch or behind a desk, the study concluded. “Our half-squat intervention may be able to be used by individuals seeking to break up their sedentary behavior in an effort to preserve cognition during times, such as in the workplace,” the researchers wrote. For the study, a group of young adult volunteers participated in two scenarios: sitting without interruption for three hours; or sitting for three hours but performing a minute of half-squats every 20 minutes. In both settings, the researchers measured volunteers’ blood pressure, blood flow through the carotid artery — which accounts for 75% of total blood flow to the brain — and heart rate after 10 minutes, one hour, two hours and three hours. At the end of each trial, the volunteers completed three thinking tests. In one test, participants were asked to quickly identify if a word they were shown – “red,” “blue,” “yellow,” “green” or “black” – was printed in the same color… read on > read on >

The repeat head injuries suffered by football players, boxers and other athletes appear to affect brain health long after players have given up their sport. New research from Johns Hopkins University in Baltimore could explain why: The persistence in the brain of inflammation tied to the original injury or injuries. “The findings show that participating in repeated collision sports like football may have a direct link to long-term inflammation in the brain,” study senior author Dr. Jennifer Coughlin said in a university news release. She’s an associate professor of psychiatry and behavioral sciences at Hopkins. Key to the new findings is a brain “repair protein,” with the unwieldy name of 18 kDa translocator protein — shortened to TSPO. Whenever a brain sustains injury, TSPO levels quickly rise as the brain tries to heal. TSPO is closely associated with immune cells in the brain called microglia, Coughlin’s group noted. It was thought that spikes in TSPO were only temporary. However, prior studies revealed that levels of the pro-inflammatory protein can remain elevated for up to 17 years. In the new study, the Hopkins team examined PET and MRI brain scans of 27 former NFL players, taken between 2018 and early 2023. They used the scans to compare levels of TSPO in the football players’ brains to those seen in brain scans of 27 former pro college… read on > read on >

Migraine sufferers would do better to talk to their doctor about a prescription drug than reaching for a bottle of ibuprofen, a new study finds. Drugs like triptans, ergots and anti-emetics can be two to five times more effective for treating migraines than ibuprofen, according to a report published Nov. 30 in the journal Neurology. “These results confirm that triptans should be considered earlier for treating migraine, rather than reserving their use for severe attacks,” said researcher Dr. Chia-Chun Chiang, a neurologist with the Mayo Clinic in Rochester, Minn. People in the throes of a migraine experience intense throbbing head pain, sensitivity to light and sound, nausea or vomiting, and even thinking issues. There are many treatments available, but not much head-to-head data comparing their effectiveness, Chiang said. For this study, Chiang and her colleagues tracked more than 3 million migraines self-reported by nearly 300,000 people using a smartphone app. The app allows users to monitor the frequency of their migraines, the triggers that caused them, the symptoms they had and the effectiveness of the medication they took. Participants reported trying different medications for their migraines a total of 4.7 million times, and noted whether each helped or not. Researchers used that information to calculate the relative effectiveness of each drug, evaluating a total 25 meds across seven drug classes. The top three classes of… read on > read on >

WEDNESDAY, Nov. 29, 2023 (Healthday News) — The diabetes drug Mounjaro prompted more weight loss among overweight and obese adults than Ozempic did in a real-world setting, researchers report. Both Mounjaro (tirzepatide) and Ozempic (semaglutide) mimic the effects of the gut hormone GLP-1, which triggers insulin production, helps control appetite and slows the movement of food through the stomach. But Mounjaro also stimulates a second gut hormone known as GIP, which may explain the findings, the investigators said. Both medications treat type 2 diabetes, but they have become wildly popular because they also help people shed unwanted pounds. Because of that, the U.S. Food and Drug Administration has approved higher doses of both Mounjaro and Ozempic for weight loss under the brand names Zepbound and Wegovy, respectively. The new study was published recently on the preprint server MedRxiv and hasn’t yet undergone peer-review so should be considered preliminary. Many doctors have suspected Moinjaro might be more potent after seeing how their diabetes patients fared on both drugs, CNN reported. However, there haven’t been many studies that compared the drugs head-to-head, especially in people who don’t have diabetes. “Over 70% of American adults have overweight or obesity, and so there’s this huge potential for these medications to be used and [there’s] really a lack of information,” lead study author Dr. Patricia Rodriguez, a senior applied scientist at Truveta Research,… read on > read on >

It might seem that surfing the web could cause a person’s mental health to suffer, but a landmark new study has concluded that internet use poses no major threat to people’s psychological well-being. Researchers compared country-level internet and broadband use to the mental well-being of millions of people in dozens of countries, and came away with no evidence that the internet is causing widespread psychological harm. “We looked very hard for a ‘smoking gun’ linking technology and well-being and we didn’t find it,” said senior researcher Andrew Przybylski, a professor of human behavior and technology at the Oxford Internet Institute in the U.K. The team also looked more closely at specific age groups as well as gender and, again, came up empty-handed — refuting concerns that internet use might be harming the psychological health of younger people and women. “We meticulously tested whether there is anything special in terms of age or gender, but there is no evidence to support popular ideas that certain groups are more at risk,” Przybylski noted in an Oxford news release. In fact, average life satisfaction has increased more for females over the past two decades, researchers found. For the study, researchers compared data from two different reports on well-being and mental health against the amount of internet and smartphone use. They examined data on the mental health of 2… read on > read on >

Personal trainers can help people increase their strength and their fitness. Could a “brain coach” be just as useful in preventing Alzheimer’s’ disease? A new study suggests that personalized health and lifestyle changes can delay or even prevent memory loss for older adults at high risk of Alzheimer’s or dementia. People who received personal coaching experienced a 74% boost in their thinking and memory tests compared with those who didn’t receive such attention. “This is the first personalized intervention, focusing on multiple areas of cognition, in which risk factor targets are based on a participant’s risk profile, preferences and priorities, which we think may be more effective than a one-size-fits-all approach,” said co-lead researcher Dr. Kristine Yaffe, vice chair of research in psychiatry at the University of California, San Francisco (UCSF). For the study, researchers recruited 172 participants and assigned half to receive personal training in health and lifestyle areas believed to increase Alzheimer’s risk. The participants were between the ages of 70 and 89, and all had at least two of eight risk factors for dementia — physical inactivity, high blood pressure, uncontrolled diabetes, poor sleep, use of prescription medications associated with risk of cognitive decline, high depressive symptoms, social isolation and smoking. Patients met with a nurse and health coach and selected specific risk factors they wanted to address. They set personal goals… read on > read on >

Evidence that soccer heading — where players use their heads to strike a ball — is dangerous continues to mount. Research to be presented at the Radiological Society of North America (RSNA) annual meeting in Chicago on Tuesday points to a measurable decline in brain structure and function as a result of the practice. “There is enormous worldwide concern for brain injury in general and in the potential for soccer heading to cause long-term adverse brain effects in particular,” said senior study author Dr. Michael Lipton, a professor of radiology and an affiliate professor of biomedical engineering at Columbia University in New York City. “A large part of this concern relates to the potential for changes in young adulthood to confer risk for neuro-degeneration and dementia later in life.” Unlike other studies that have examined adverse effects at one point in time, Lipton’s team looked at brain changes over two years. They asked 148 amateur players (average age: 27) how often they play, practice and head the ball — and in what situations. Their exposure was ranked low, moderate or high. Just over a quarter of participants were women. Players’ verbal learning and memory were assessed and each had a specialized head scan known as diffusion tensor imaging (DTI). These advanced MRI techniques track the movement of water through brain tissue. The images were telling.… read on > read on >

Medical imaging for thinking and memory issues happens much later in Black patients than in their white and Hispanic counterparts, new research shows. A study to be presented Thursday at a meeting of radiologists also revealed that Black patients were less often tested with MRIs, a preferred way to identify brain abnormalities that can cause cognitive issues. Other research has found that Black people have a greater risk of Alzheimer’s disease and other types of dementia and they are more likely to be diagnosed later than white patients. “If disparity in obtaining access to neuroimaging is one possible barrier that delays diagnosis, it is important to identify this and figure out possible solutions to benefit these patients and prevent a delayed diagnosis,” said lead author Dr. Joshua Wibecan, a radiology resident at Boston Medical Center. Increasingly, imaging with MRI plays a big part in diagnosing thinking impairments. But it has been unclear how differences in access to imaging may lead to delayed diagnoses. Wibecan’s team studied four years of imaging data at Boston Medical Center. As a safety net medical center, it cares for people regardless of their ability to pay or insurance status. Researchers identified all outpatient CTs and CT angiographies of the head, as well as MRI brain exams done for mental impairment. Self-identified Black patients were older when they received imaging and… read on > read on >

In a disease cluster last year, one infected but asymptomatic man spread a rare form of syphilis that affects the eyes to five Michigan women, a new report finds. Since ocular syphilis remains very rare, researchers believe the strain of T. pallidum — the syphilis bacterium — that the man carried might have raised the risk for eye complications in his sex partners. The man and the five middle-aged white women he infected eventually all received penicillin treatment and were cured. So the researchers say it’s possible that the strain “ceased to circulate after these patients and their common partner were treated,” although no one can know that for sure. The study was led by Dr. William Nettleton of the Kalamazoo County Health and Community Services Department in Kalamazoo, Mich. His team reported the findings in the Nov. 24 issue of Morbidity and Mortality Weekly Report, a journal of the U.S. Centers for Disease Control and Prevention. Syphilis is making an unwelcome comeback among sexually active Americans everywhere. According to Nettleton’s group, in Michigan cases-per-100,000-people rose from 3.8 in 2016 to 9.7 by 2022. Most of the rise in cases was concentrated in southwest Michigan (the area around Kalamazoo). Syphilis is an insidious infection, because in many cases it does not cause symptoms although the bacterium can still be transmitted to others. Over time, syphilis… read on > read on >

Whole grains could be the key to Black people protecting their brains against aging and dementia, a new study reports. Black folks who ate more foods with whole grains appeared to have a slower rate of memory decline than those who ate fewer whole grains, according to findings published Nov. 23 in the journal Neurology. Among Black people, those who ate the most whole grains had brains about 8.5 years younger than those who ate the least. Whole grains only appeared to help Black people – researchers saw no similar trend in white participants. “With Alzheimer’s disease and dementia affecting millions of Americans, finding ways to prevent the disease is a high public health priority,” researcher Xiaoran Liu, an assistant professor of internal medicine at Rush University in Chicago, said in a journal news release. “It’s exciting to see that people could potentially lower their risk of dementia by increasing their diet of whole grains by a couple of servings a day,” Liu added. For the study, researchers followed more than 3,300 people without dementia (average age: 75). About 3 out of 5 participants were Black. Participants filled out a questionnaire every three years about the whole grains they ate, and they also completed brain games and memory tests. Researchers divided participants into five groups based on the amount of whole grains in their diet.… read on > read on >