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.

An Indiana licensing board has fined a local physician $3,000 and handed her a letter of reprimand after she went public about a 10-year-old Ohio patient forced to travel across state lines for an abortion.

Indiana Attorney General Todd Rokita brought the case against obstetrician/gynecologist Dr. Caitlin Bernard, for comments she made last July to the Indianapolis Star about a young rape victim who could not legally receive an abortion in Ohio because she was just over six weeks pregnant.

Bernard testified she did not feel she would have ever been brought before the board - where she risked losing her license - if Rokita had not chosen to make the case a political stunt.

"I feel an obligation as a physician to share information that is relevant to public health," said Bernard, "as well as potentially in light of certain legislation, ensuring that it is clear that those are contrary to the best interest of my patients."

The AG's office had argued Bernard made the decision to speak about her patient to the largest newspaper in Indiana, which resulted in national publicity for the case.

Indiana University Health, where Bernard works, issued a statement after the decision maintaining its findings that Bernard did properly follow privacy laws.

After the story broke, Rokita appeared on Fox News to discuss it. Other Republican leaders, including Ohio U.S. Rep. Jim Jordan - R-Urbana - suggested Bernard fabricated the story.

Bernard acknowledged that politics made the case more challenging.

"Certainly, there was a lot of media frenzy," said Bernard. "I was receiving significant harassment, particularly after Fox News picked up on the story and began featuring the story in their news segments. I was quite surprised by all of the attention."

Bernard told the licensing board she was surprised that people think young girls are not, unfortunately, frequently raped and become pregnant.




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As Lyme disease Awareness Month draws to a close, levels of some tick-borne illnesses in Missouri are on the rise.

While Lyme infections in Missouri are not as dramatic as they are in northeastern states, officials said there is still cause for concern. Ticks cause a higher number of human diseases than any other insect in the U.S.

The most common tick related diseases in Missouri are Rocky Mountain spotted fever, ehrlichiosis, tularemia, and Lyme, along with newer viruses such as Heartland and Bourbon. Studies show the frequency of infections are increasing.

Dr. Ram Raghavan, associate professor of veterinary pathobiology at the University of Missouri Veterinary Medical School, said there are several reasons why.

"Some of these suburban areas are built around wooded backyards, and people are interacting with the wild more than they used to be in the past," Raghavan explained. "We are also getting very clever and very accurate in the way we detect diseases, there is increased awareness, not only among practitioners, but also patients."

He pointed out climate change is also making winters warmer and extending tick season. When outdoors experts recommend hikers stay in the center of trails and avoid tall grass and brush. Recommendations also include wearing clothing treated with permethrin or insect repellent containing at least 20% DEET, to check clothing for ticks, showering after being outdoors, then conducting a thorough tick check.

Raghavan noted in addition to the many bacterial pathogens transmitted by ticks, there are also threats from emerging viruses.

"Recently, in the past 10 years or so, a couple of new tick-borne viruses emerged in our area here in the central Midwest," Raghavan outlined. "One of them is called Heartland virus, and another one is Bourbon virus. Heartland and Bourbon viruses can actually kill somebody and there have been a few fatalities that have occurred over the years."

The Missouri Department of Health reports the majority of Heartland virus patients required hospitalization to recover. Bourbon virus is named after Bourbon County, Kansas, where the first U.S. incidence of the disease occurred.

A relatively new condition associated with tick-borne illness is Alpha-Gal Syndrome, when people become allergic to red meat. Raghavan said it is transmitted by the most common tick in the state.

"Meat allergy is a significant problem, and it is transmitted by the tick called the Lone Star tick, which is actually the most abundant tick in our region," Raghavan stressed. "Chances are, if someone is ever going to see a tick on them, it's most likely going to be a Lone Star tick. So we need to be watching out for that."

Ticks cannot fly or jump, nor do they drop from trees. They stay relatively close to the ground where they can access soil moisture which they need to stay alive. After rain, the wet conditions and higher humidity will bring ticks out in greater numbers.


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Extreme heat kills about 700 people in the United States each year, but a new toolkit and weather alerts can protect folks in Texas and beyond.

According to an analysis by Climate Central, the annual number of risky heat days has increased in 232 U.S. locations since 1970.

Saqi Maleque Cho, president of the health and development nonprofit Americares, said the new Heat.gov pilot project will help frontline clinics and the patients they serve better prepare for and respond to climate shocks.

"For example, our hurricane resources remind patients to refill their medications before a major storm," she said. "For diabetic patients who depend on insulin, we remind them to keep icepacks and a cooler in the event of a power outage."

From 1970 to 2022, Reno, Nevada, reported the highest number of what Climate Central called "minimum-mortality temperature" days. However, three Texas cities - Austin, Houston and McAllen - were in the top ten for hottest temps.

The toolkit is available at Americares.org.

Kimberlyn Clarkson, chief advancement officer at Texas' San Jose Clinic, said doctors already are seeing health impacts to patients from high heat, including life-threatening dehydration. Those are often people, she said, who work in the agribusiness industry or construction.

"They don't have the option of not going in when it's a 99-degree day, or not reporting for work if there's some sort of inclement weather," she said. "They need the work. They don't have PTO; if they don't go to work, they don't earn income."

To create the Climate Resilience for Frontline Clinics Toolkit, said Caleb Dresser, a physician and director of Harvard University's climate program, a needs assessment was conducted of 450 physicians and clinicians to learn what would help them better respond to their patients affected by heatwaves, hurricanes, floods or wildfires.

"As we look both short-term, medium-term and long-term at what climate change is," he said, "it means greater exposure to climate-responsive hazards for a whole lot of people, all over the country."


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