Health
Common vision issue linked to type of lighting used in Americans’ homes
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Nearsightedness (myopia) is skyrocketing globally, with nearly half of the world’s population expected to be myopic by 2050, according to the World Health Organization.
Heavy use of smartphones and other devices is associated with an 80% higher risk of myopia when combined with excessive computer use, but a new study suggests that dim indoor lighting could also be a factor.
For years, scientists have been puzzled by the different ways myopia is triggered. In lab settings, it can be induced by blurring vision or using different lenses. Conversely, it can be slowed by something as simple as spending time outdoors, research suggests.
Nearsightedness occurs when the eyeball grows too long from front to back, according to the American Optometric Association (AOA). This physical elongation causes light to focus in front of the retina rather than directly on it, making distant objects appear blurry.
The study suggests that myopia isn’t caused by the digital devices themselves, but by the low-light environments where they are typically used. (iStock)
Researchers at the State University of New York (SUNY) College of Optometry identified a potential specific trigger for this growth. When someone looks at a phone or a book up close, the pupil naturally constricts.
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“In bright outdoor light, the pupil constricts to protect the eye while still allowing ample light to reach the retina,” Urusha Maharjan, a SUNY Optometry doctoral student who conducted the study, said in a press release.
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“When people focus on close objects indoors, such as phones, tablets or books, the pupil can also constrict — not because of brightness, but to sharpen the image,” she went on. “In dim lighting, this combination may significantly reduce retinal illumination.”
High-intensity natural light prevents myopia because it provides enough retinal stimulation to override the “stop growing” signal, even when pupils are constricted. (iStock)
The hypothesis suggests that when the retina is deprived of light during extended close-up work, it sends a signal for the eye to grow.
In a dim environment, the narrowed pupil allows so little light through that the retinal activity isn’t strong enough to signal the eye to stop growing, the researchers found.
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In contrast, being outdoors provides light levels much brighter than indoors. This ensures that even when the pupil narrows to focus on a nearby object, the retina still receives a strong signal, maintaining healthy eye development.
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The team noted some limitations of the study, including the small subject group and the inability to directly measure internal lens changes, as the bright backgrounds used to mimic the outdoors made pupils too small for standard equipment.
Researchers believe that increasing indoor brightness during close-up work could be a simple, testable way to slow the global nearsightedness epidemic. (iStock)
“This is not a final answer,” Jose-Manuel Alonso, MD, PhD, SUNY distinguished professor and senior author of the study, said in the release.
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“But the study offers a testable hypothesis that reframes how visual habits, lighting and eye focusing interact.”
The study was published in the journal Cell Reports.
Health
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Health
Just 5 minutes of prayer could have surprising health benefits, study finds
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Adult patients experienced significant relief from pain and anxiety after just five minutes of in-person prayer, as found in a randomized controlled trial.
The study, led by researchers at the University of Maryland School of Medicine’s Department of Family and Community Medicine, compared the effects of direct prayer to the effects of listening to music, revealing that prayer provided greater and more sustained relief for both symptoms.
“Prayer is powerful and beneficial on many levels,” Jesse Bradley, pastor of Grace Community Church in Washington, told Fox News Digital.
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According to statistics cited in the study, prayer is the most used form of complementary medicine in the United States, relied on by 43% of Americans.
The researchers focused on a practice known as proximal intercessory prayer (PIP), which is defined as in-person, face-to-face prayer directed toward another individual’s well-being.
The researchers tracked changes in the participants’ self-reported pain and anxiety levels at multiple intervals: immediately after the five-minute session, at two weeks and at six weeks. (iStock)
The research team recruited 180 adult patients from a family medicine waiting room, according to a press release. All participants had previously reported experiencing moderate to severe pain, anxiety or both.
Following their standard medical appointments, the patients were randomly assigned to one of two groups: the prayer group, in which participants received five minutes of in-person Christian prayer delivered by a trained volunteer, and the music group, where they spent five minutes listening to music.
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The researchers then tracked changes in the participants’ self-reported pain and anxiety levels at multiple intervals: immediately after the five-minute session, at two weeks and at six weeks.
“It was very well-received,” Katherine Jacobson, MD, assistant professor of family and community medicine at the University of Maryland School of Medicine, told Fox News Digital. She noted that 97% of participants said they were “neutral or supportive” when asked about having this kind of prayer available as part of their medical visits.
An expert described the transformative power of prayer through “healing and comfort,” and shared that he himself once went through a long, painful recovery process. (iStock)
The study, which was published in The Annals of Family Medicine, revealed that while patients in both groups showed improvements, those in the prayer group reported substantially greater relief.
Bradley, who was not involved in the study, described the transformative power of prayer through “healing and comfort,” and shared that he himself once went through a long, painful recovery process.
“Daily prayer was essential in my healing journey,” he shared.
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For pain reduction, the individuals who received in-person prayer experienced greater drops in pain intensity immediately following the session. This superior level of relief remained evident during the two-week follow-up compared to the music group, the researchers found.
For anxiety reduction, the benefits of prayer were even longer-lasting. The prayer recipients reported significantly greater reductions in anxiety immediately after the session, and these positive effects remained statistically significant at both the two-week and six-week checkpoints.
The prayer recipients reported significantly greater reductions in anxiety immediately after the session, and these positive effects remained statistically significant at both the two-week and six-week checkpoints. (iStock)
“We expected that patients who expected prayer to work would benefit more, but that wasn’t what we found,” Jacobson said.
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“Religious affiliation, religious intensity and expectancy of healing did not predict who improved,” he went on. “Benefits appeared across a wide range of patients, including those not of the Christian faith and those who did not expect the intervention to help them.”
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The study had some limitations, the researchers acknowledged, primarily that it could not prove that prayer itself caused the improvements.
The team also noted that patients receiving prayer had human contact, while the music control group did not. The eye contact and gentle laying of hands from the prayer volunteers may have had an impact, as that type of contact is known to reduce pain.
The researchers suggested that PIP could serve as a low-cost, non-pharmacologic and effective complement to standard medical care. (iStock)
The authors hope to conduct future studies with a control group that receives interpersonal contact but no prayer.
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“For physicians and health systems, the study supports continuing to ask patients about spiritual care preferences as part of whole-person care, and considering whether trained Christian volunteer prayer practitioners could be integrated into outpatient settings for interested patients,” Jacobson said.
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The researchers suggest that PIP could serve as a low-cost, non-pharmacologic and effective complement to standard medical care.
Rather than replacing traditional treatments, the authors indicate that this type of brief, faith-based intervention could be integrated into primary care settings to help manage pain and anxiety.
Health
Cancer survivors may see surprising benefits from one specific exercise, study says
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For many, surviving cancer comes with an automatic new lease on life but other survivors continue to experience physical and emotional challenges long after treatment ends.
Yoga may significantly reduce the insomnia, fatigue and mood disturbances many survivors endure after remission, a recent clinical trial found.
Mood disturbance and insomnia are “two of the most pervasive and troubling side effects experienced by cancer survivors for years after completing adjuvant treatments,” the researchers reported in the Journal of Clinical Oncology.
SIMPLE DAILY HABIT MAY HELP EASE DEPRESSION MORE THAN MEDICATION, RESEARCHERS SAY
They noted that both symptoms can substantially inhibit survivors’ ability to perform everyday activities.
The study, funded by the National Cancer Institute, compared 204 cancer survivors receiving standard survivorship care alone with 206 survivors who paired standard care with the Yoga for Cancer Survivors (YOCAS) program. Most of the participants were female breast-cancer survivors.
A clinical trial showed that yoga may help ease symptoms cancer survivors experience after treatments. (iStock)
YOCAS is a four-week intervention that incorporates two types of yoga – hatha, which is traditional and more active, and restorative, which is more passive. Both forms involve slow, gentle movements, breathing exercises and mindfulness, according to the American Society of Clinical Oncology (ASCO), which published a news release on the study’s findings.
Participants in the YOCAS group practiced yoga, on average, for 180 minutes each week over the course of three sessions.
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At the end of the trial, the YOCAS participants reported overall improvements to mood, anxiety and fatigue, while the standard care group did not.
“Additionally, improvements in insomnia stemming from YOCAS yoga may be mediated by changes in overall [mood disturbance] and fatigue,” the researchers wrote.
“[The study is] an important advance because it offers survivors, who are likely already managing multiple medications, a non-pharmaceutical solution for reducing four different side effects at once,” Fumiko Chino, MD, a cancer researcher and associate professor in breast radiation oncology at MD Anderson Cancer Center, told ASCO.
Cancer survivors often continue to struggle with physical and mental-health challenges after the disease has been successfully treated. (iStock)
Timothy Pearman, Ph.D., director of supportive oncology at the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, told Fox News Digital he was not surprised by the results of the study.
“Yoga is one of the most widely studied and validated interventions for managing cancer-related fatigue, mood disturbance and overall physical health,” Pearman said.
Pearman said his wife, Jenny Finkel, is a yoga teacher and received her continuing education at Duke University’s integrative medicine program, which focuses on yoga for cancer patients.
“There are now a number of cancer-specific yoga teacher training programs nationwide,” Pearman said. “Yoga is a wonderful thing because it is very modifiable, meaning that even for people who have significant physical impairment, the exercises can be modified so that anyone can participate.”
He added that yoga is affordable, too, because “all you need is a mat and someone to show you how to do it.”
Osteoporosis, an increased risk of cardiac problems and issues with balance and stamina are other physical symptoms related to cancer treatment that yoga can help mitigate, Pearman said.
Cancer survivors who took part in an average of three yoga classes a week for four weeks reported reduced anxiety and fatigue, according to a recent study. (iStock)
Shari Botwin, a licensed clinical social worker based in Pennsylvania, is a thyroid-cancer survivor who specializes in working with victims of trauma, including cancer. She turned to yoga months after her diagnosis and told Fox News Digital the practice has been “transformative.”
According to Botwin, cancer survivors she’s worked with have dealt with emotional challenges that affect their healing process, including depression and survivor’s guilt. In addition to the physical relief yoga can provide, she said it can also offer “a supportive environment of peers, some of which are cancer thrivers.”
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Botwin added that yoga can help survivors who have lost parts of their body reframe their thinking.
“It supports us into moving into a place of self-compassion rather than shame and self-hatred,” she said.
Yoga can help cancer survivors who struggle with guilt or shame to find a community of understanding peers, according to some experts. (iStock)
Almost any type of exercise can be beneficial for cancer survivors, Pearman said. He advises his patients to stick to the type of exercise they enjoyed prior to cancer.
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He also noted that free yoga classes geared toward cancer survivors are widely available through various non-profit organizations.
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