Showing posts with label JAMA. Show all posts
Showing posts with label JAMA. Show all posts

Tuesday, September 20

Walking Helps Dementia


As the global population ages, cases of dementia are also on the rise worldwide. The World Health Organization (WHO) states that some 55 million

Trusted Source people currently have dementia, and the number is set to rise to 139 million by 2050.

The Centers for Disease Control and Prevention (CDC) estimate that Alzheimer’s disease, the commonest form of dementia, affects around 5.8 millionTrusted Source people in the United States alone.

The greatest risk factors for dementia, according to the Alzheimer’s Society, are aging and genetics. Dementia is most common in those aged over 75, and having a close relative with dementia may increase a person’s riskTrusted Source of developing the disorder.

Other risk factors that we cannot control include sex — females are more at risk than males — and ethnicity. However, lifestyle changes, such as increasing physical exercise, controlling blood pressure, and keeping the brain stimulated, can decrease a person’s risk of dementia, even for those who have one or more risk factors.

Dr. Anton Porsteinsson, professor and director of the Alzheimer’s Disease Care, Research and Education Program (AD-CARE) at the University of Rochester Medical Center, told Medical News Today:


“A broad, healthy approach factoring in lifestyle, diet, exercise, cognitive stimulation, socialization, and sleep all make a difference. Many of them [can be effective] even if started later in life.”

And physical exercise need not mean sweating it out at the gym or taking up a new sport.

According to a study recently published in JAMA NeurologyTrusted Source, simply increasing the number of steps a person takes each day can decrease their dementia risk by as much as 50%.  READ MORE...

Saturday, April 2

Secondhand Marijuana Smoke

Secondhand cannabis smoke from a bong is more dangerous than cigarette smoking, according to researchers.

In a study published Wednesday in the journal JAMA Network Open, authors from the University of California, Berkeley School of Public Health wrote that bong smoking “is not safe.”

“Decades ago, many people thought [secondhand tobacco smoke (SHTS)] presented no health risk to nonsmokers. Scientific research since then changed this perception and led to smoke-free environments. Incorrect beliefs about [secondhand cannabis smoke (SHCS)] safety promote indoor cannabis smoking,” they said.

“Nonsmokers are exposed to even higher concentrations of SHCS materials during ‘hot-boxing,’ the popular practice in which cannabis smokers produce high volumes of smoke in an enclosed environment. This study’s findings suggest SHCS in the home is not safe and that public perceptions of SHCS safety must be addressed.”

The group found that concentrations of fine particulate matter (PM2.5) generated in a home during social cannabis bong smoking to which a nonsmoking resident might be exposed were greatly increased compared with background levels, and that PM2.5 decayed only gradually after smoking ceased.

Following 15 minutes of smoking, average PM2.5 was more than twice the Environmental Protection Agency (EPA) hazardous air quality threshold.

“If one assumes the exposure concentrations were at the mean levels observed, a single home smoking session with no other exposures would generate an estimated mean daily concentration that greatly exceeds the average in cigarette-smoking homes, nonsmoking homes and the U.S. EPA daily standard,” the researchers said.

In order to reach these conclusions, the Environmental Health Sciences Division members’ levels of PM2.5 were measured before, during and after eight cannabis social-smoking sessions in a household living room.

An aerosol monitor was placed where a nonsmoker might sit to record the levels.

Home cannabis bong smoking significantly increased PM2.5 from background levels by at least 100-fold to 1,000-fold for six of eight sessions. The other two sessions had high background levels and significantly increased PM2.5 more than 20-fold.  READ MORE...

Friday, September 3

Increase in Diabetes


Diabetes
surged among American children, teens and adolescents to 2017, according to new federally-funded research spanning nearly 20 years finding a 45% increase in type 1 diagnoses, and a 95% growth in type 2 diagnoses.

"Increases in diabetes are always troubling – especially in youth. Rising rates of diabetes, particularly type 2 diabetes, which is preventable, has the potential to create a cascade of poor health outcomes," Dr. Giuseppina Imperatore, chief of the Surveillance,

Epidemiology, Economics, and Statistics Branch in CDC’s Division of Diabetes Translation, said in a statement issued Tuesday. "Compared to people who develop diabetes in adulthood, youth are more likely to develop diabetes complications at an earlier age and are at higher risk of premature death."

Findings published in JAMA on Tuesday indicated that Type 1 diabetes persists as the most common type of diabetes among U.S. youth. Results stemmed from an average of 3.5 million Americans under age 20 studied on a yearly basis from 2001 to 2017 across areas of California, Colorado, Ohio, South Carolina, Washington State, Arizona and Mexico. 

Results indicated significant increases in type 1 diabetes among Americans 19 years or younger, from 1.48 per 1,000 young people to 2.15 per 1,000 by 2017, or a 45% increase over 16 years, whereas the prevalence of type 2 diabetes among kids aged 10-19 increased from 0.34 per 1,000 youths to 0.67 per 1,000 youths, or a 95.3% increase over 16 years.

Study authors noted no significant differences in the increases in diabetes prevalence across sexes.

The study found the largest increases in type 2 diabetes were among Black and Hispanic youth, with increases in the estimated prevalence of type 1 diabetes greatest among Black and White youths. Kids under age 9 with type 2 diabetes were excluded from the study due to small sample sizes.

Diabetes is a chronic health condition impacting how the body converts food into energy. According to the Centers for Disease Control and Prevention (CDC), "If you have diabetes, your body either doesn’t make enough insulin or can’t use the insulin it makes as well as it should. When there isn’t enough insulin or cells stop responding to insulin, too much blood sugar stays in your bloodstream. Over time, that can cause serious health problems, such as heart disease, vision loss, and kidney disease."  READ MORE