With the rise in digital device use, more people are expressing concern about exposure to blue light.

While blue light is around us daily as part of sunlight, artificial sources of blue light from device screens are often adding hours of exposure after dusk. Experts recommend heavy users take periodic breaks from device screens by using the 20-20-20 rule, which is a 20-second break, every 20 minutes to look at something 20 feet away.

Dr. Bryce St. Clair, instructor in the Department of Ophthalmology at Johns Hopkins University, said the concern over blue light is exaggerated, but it can affect sleep in some people.

"Blue light, we know will signal your brain to stay more stimulated," St. Clair pointed out. "Some people will say when they are on a phone or on a laptop before bed, that they stay awake longer than usual. And we know there's evidence to suggest that it affects circadian rhythms mildly."

He added people who experience difficulty falling asleep should use the blue light blocker or night mode on their devices.

Some people experience symptoms of eye strain with long periods of screen time. St. Clair explained with device use there is some evidence of reduced blinking.

"There's anecdotal evidence to suggest that if you are somehow involved with blue light devices, that you blink less often than those who don't use blue light devices," St. Clair noted.

He used the example of a physical book, emphasizing readers will blink significantly more often compared to those reading on a device, which may cause irritation for people who already have dry eyes.

St. Clair stressed ultraviolet radiation from the sun is a primary concern. He advised the single best thing you can do for your eyes is to wear sunglasses outdoors.

"Why are sunglasses fantastic? One, anytime you're squinting because it's too bright outside. That is your eye's way of telling you that's too much light. Number two, it prevents UV radiation and UV damage to the lens of your eye which can cause cataracts, to the retina which can cause macular degeneration," St. Clair outlined.

He also stated sunglasses help protect the eyelids against skin cancer. He recommended polarized sunglasses with UVA and UVB protection.

Most people probably never give a second thought to their visits to the dentist, but not everyone can navigate this process with ease. People with intellectual or developmental disabilities may face challenges in finding quality dental care.

Dr. Bill Milner founded Access Dental Care with those patients in mind. It's a mobile dental service that makes care more accessible by visiting places such as nursing homes, group-home day centers, PACE programs and retirement communities.

Milner said the goal is to provide a dental home for a population that is too often overlooked.

"We've had to develop our own delivery system," he explained. "It has to be rolled in, five days a week, into different facilities. We treat 15 to 18 patients a day, and then we gather everything up at the end of the day, roll it back out, put it in the truck and go home."

Sponsored by the North Carolina Dental Society, Access Dental Care serves 60 counties in the state, and visits about 160 facilities. Milner has also won this year's American Dental Association Humanitarian Award.

Milner acknowledged that efforts are being made to improve access, but said barriers still exist -- from navigating behaviors to having few providers trained to give specialized care. He said even small changes within the profession can lead to improvements.

"We're having folks roll in, in wheelchairs, into offices -- and they don't know how to transfer folks into dental chairs," he said, "and it's as simple as getting a physical therapist in to train their staff."

Another significant challenge is Medicaid funding for providers, which Milner said typically only reimburses 38 cents for every dollar of the dental bill. Nonetheless, he said, his team will continue to advocate for special-care services, with plans to open more clinics.

Milner sees it as a priority to raise awareness and encourage more dentists to work with these patients.

"We need them to speak up and continue to be advocates for oral health," he noted, "and for them to understand that infection in the mouth is infection in the body."

There is movement on this issue at the state level. In the North Carolina Legislature, Senate Bill 382 would give students the chance to work in the community at nursing homes and group homes. The bill is now in a conference committee and has bipartisan support.

The holiday season is filled with recipes passed down from years before, and feasting with family and friends. But think again before you have seconds.

The top three days for heart-related deaths are Dec. 25-26 and Jan. 1, according to a study in Circulation, a publication of the American Heart Association. Missouri dietitians and the Heart Association are reminding people to mind their heart health and overcome excuses.

Registered dietitian Ariel Johnston at The Tasty Balance in St. Louis said it's fine to enjoy favorite holiday foods - but add something, to help keep it balanced.

"Maybe you have your favorite recipes that was handed down from Grandma, and maybe it's not the most 'heart healthy.' You can still have that, but let's add some greens or salad, or your appetizers that include some fruits and veggies," she said. "You don't want to deprive yourself of those favorite things."

Winter weather can be another trigger for increased heart-attack risk, with cold temperatures restricting blood flow through already constricted blood vessels. But the research says even in a mild climate, about one-third more heart attack deaths occur in December and January than in June through September.

If it's willpower you need to keep from overindulging, the Heart Association offers tips online at heart.org.

Johnston added that so-called "yo-yo" dieting or crash diets, which are often popular following the holiday season, can be detrimental to heart health.

"A lot of the rhetoric that we hear at this time of year, as far as, like, 'This is how many pounds people gain during the holidays,' and then, you're going to start seeing all the advertising for the new diets coming up," she said. "Yes, people might lose weight and maybe improve lipid profiles a little bit. But really, they aren't sustainable."

The Heart Association also has recipes online that can help with healthier substitutions or additions to holiday meals.

Research in Georgia is getting a boost to help enhance the lives of people living with Alzheimer's disease and provide better support.

In Georgia, more than 150,000 people age 65 and older are living with Alzheimer's, and the number is only expected to rise.

Leslie Tripp Holland, senior director of marketing and communications for the Alzheimer's Association, said the state has received an additional $600,000 to advance research efforts.

"For instance, we have one researcher at Emory University," Holland explained. "Her research brings dementia awareness into the Black American churches and she is creating dementia-friendly congregations."

Right now, 19 projects are active in such areas as Atlanta, Athens and Kennesaw. Holland noted in addition to the search for a cure, many of the projects are assisting in risk mitigation, creating opportunities to spread awareness and allowing people to participate in clinical trials, ultimately helping provide increased representation in research.

Breaking down the stigmas surrounding brain health, dementia, and Alzheimer's is another significant aspect of the research being conducted in Georgia. Holland emphasized by investing in research, the state is advancing its understanding of the diseases while working toward developing effective treatments.

"We now have two FDA-approved treatments that are also approved by Medicare that clinically changed the course of the disease," Holland stressed. "We have never had that in the past."

The funding was part of a $100 million investment into research around the country by the Alzheimer's Association, the largest investment since 1980. Data show more than 6 million people in the U.S. are living with Alzheimer's, and by 2050, this number is projected to rise to nearly 13 million.


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