COLUMBUS, Ohio -- As Ohio's medical marijuana program embarks on its second year, health-care advocates are trying to better understand the prevalence of marijuana use, as well as its perceived safety.

Marijuana is the most commonly used illegal substance in the country, and the latest Ohio Health Issues Poll found nearly half of Ohio adults have a friend or family member who regularly uses the drug. Marcie Seidel, executive director of the Prevention Action Alliance, explained the polling also asked opinions on the risk of self-harm among regular marijuana users.

"As they know people more that are using marijuana regularly, the perception of harm seems to be going down. People don't think it's a very harmful or even somewhat harmful substance," Seidel said. "Those are very interesting and important takeaways that we need to be monitoring over time."

Of the Ohio adults who said they know someone who regularly uses marijuana, 30% said they perceive it as harmful, compared with 60% of those who do not know someone who regularly uses the drug. The polling also found 8-in-10 Ohio adults have not sought information about medical marijuana, and just 2% had a written recommendation from their doctor for its use.

Seidel said the polling will be helpful as the state tracks the impact of the medical marijuana program. She added people need accurate data and facts so they can make good decisions about their health, and cautioned there are many misconceptions about marijuana that are not based on research.

"Right now, marijuana is a booming business and it's a business that people think that they're going to become very rich and it's going to be very lucrative," she said. "So there will be information out there that might be designed to increase that business instead of giving good facts."

Marijuana is used by an estimated 44 million Americans age 12 and older each year, and more than 55,000 Ohioans purchased medical marijuana in 2019. Research and data is available online at PreventionActionAlliance.org/marijuana.



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Excessive screen time can cause a host of negative side effects in kids, but as some Indiana schools go virtual because of the omicron variant, prolonged interaction with technology can be unavoidable.

Dr. Derek Sprunger, a professor of clinical ophthalmology in the Indiana University School of Medicine's Ophthalmology Department, said parents still can still use several methods to moderate their kids' screen time. He advised limiting kids' exposure to non-education-related technology.

"I don't say eliminate, but cut back," he said, "and there's no exact amount of time that you should or shouldn't be doing this, but if you're doing a lot through school, more than typical, cut back on your outside-of-school time, like gaming and things like that."

Sprunger said excessive screen time can cause several short-term health effects, including eye fatigue, blurred vision and headaches. According to the Mayo Clinic, it also can lead to irregular sleep and impaired academic performance.

In addition to those side effects, Sprunger added that overusing technology also can advance long-term nearsightedness.

"This is a more permanent thing," he said. "The things we talked about earlier, if you cut usage of your screen time, that will reverse. Once you induce nearsightedness, that can be a more permanent problem."

Dr. Scott Edmonds, chief eye-care officer at United Healthcare, recommended the "20-20-20" rule, breaking up screen time to limit eye strain: For every 20 minutes folks spend staring at a computer, he said, they should take 20 minutes to observe something at least 20 feet away.

"That break takes you away from the blue light, lets your pupil go to its normal size, lets your muscles in your eye relax, lets your focusing muscle relax," he said. "All that, every 20 minutes, will really help you be more comfortable with screen time."

In a September report from the Pew Research Center, about 70% of parents said their children are spending more time in front of screens than they did pre-pandemic.

More than 2.5 million Americans stutter at some point in their lives, and a Michigan researcher is among those learning more about the genetics of stuttering.

There is no known cure for it, but experts say newly identified genes associated with stuttering can help them find out if there are links to other conditions or possible treatments.

Shelly Jo Kraft, who directs the Behavior, Speech and Genetics lab at Wayne State University, said the new genes are helping researchers learn more about the factors that contribute to stuttering, or protect people from risk.

"We've known stuttering is inherited for a long time," she said, "but there's been a lot of community misinformation about stuttering, a lot of stigma, a lot of misconception about why someone stutters."

She said having more information about how the genes operate that lead people to stutter can help push back against those misconceptions - to show that stuttering isn't a personality trait, or caused by a traumatic event.

In addition to learning more about the genetics of stuttering, Kraft said, the research is showing that the condition is much more prevalent than once thought. At least 5% to 6% of children and 1% of adults experience stuttering, but she said that may be an undercount.

"A lot of children do stutter for a transient amount of time during childhood," she said, "and with the help of therapy, with the help of their parents and natural things that parents do in response to stuttering, the stuttering goes away."

Kraft, who has collected DNA samples from roughly 1,800 people who stutter from 250 families globally, has partnered with a research lab at Vanderbilt University to expand their reach to a worldwide repository of DNA information.

Statistics show thanks to the pandemic, Americans are now glued to their digital devices an average of 13 hours a day, up from 7 or 8 hours a day before COVID.

Exposure to blue light from screens is taking a toll on our eyes. Blue light is part of the UV spectrum and can damage your retina.

Helen Macias, an optician at Dynamic Eye Care in North Las Vegas, said they are seeing a lot more customers who complain of eye pain in the past year.

"Right now, we're experiencing a lot of children, teachers and others who are now conducting business online," Macias explained. "People are now experiencing the strain on the eyes, staring at the screen. It can lead to macular degeneration."

People with light-colored eyes or a family history of macular degeneration are at higher risk. Blue light is present in sunlight but the bulk of people's exposure comes through their cell phones, tablets, certain smart TVs and high-end video games.

Dr. Scott Edmonds, chief eye care officer for United HealthCare, recommended people follow the 20-20-20 rule: For every 20 minutes of screen time, take 20 seconds to stare at something in the distance at least 20 feet away.

"That break takes you away from the blue light, lets your pupil go to its normal size, lets your muscles in your eye relax, lets your focusing muscle relax," Edmonds emphasized. "All that every 20 minutes will really help you be more comfortable with screen time."

People can purchase lenses for their eyeglasses or certain laptops to filter out blue light, and they can use the "night mode" feature on their cell phones to cut down on exposure.