Latest / Morning Medical with Dr. Chow / Light Pollution and Alzheimer's, Sleep Health, and Trends in Sleep Aids

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Light Pollution and Alzheimer's, Sleep Health, and Trends in Sleep Aids · Morning Medical with Dr. Chow

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  Good morning and welcome to another episode of Morning Medical with Dr.
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  Chow.
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  I am your host, Dr.
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  Chi-Ming Chow, and today we have some fascinating updates in the world of health and
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  medicine.
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  In today's episode, we'll be discussing a new study that links light pollution to an
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  increased risk of Alzheimer's disease.
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  Let's dive right in.
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  Exposure to outdoor light at night could put people at a higher risk of developing
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  Alzheimer’s disease, according to a new study published in Frontiers in Neuroscience.
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  "We show that, in the United States, there is a positive association between Alzheimer's
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  disease prevalence and exposure to light at night, particularly in those under the age of
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  65," said first author Dr.
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  Robin Voigt-Zuwala, an associate professor at Rush University Medical Center in Chicago, in a
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  press release.
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  "Nightly light pollution, a modifiable environmental factor, may be an important risk
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  factor for Alzheimer's disease."
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  Some common sources of artificial light include streetlamps, vehicles, illuminated signs,
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  office buildings, and other lighted structures.
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  In the study, researchers analyzed light pollution maps across the country, ranking each
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  state’s nighttime intensity data.
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  They then looked at the corresponding levels of Alzheimer’s disease.
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  For people 65 and older, light pollution was a greater risk factor than obesity, depression,
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  alcohol abuse, and chronic kidney disease.
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  However, other risk factors such as high blood pressure, diabetes, and stroke outweighed the
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  risk of light pollution for that age group.
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  Those under 65 years old, however, appeared to be more sensitive to nighttime lighting
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  exposure, which increased their Alzheimer’s risk more than any other risk factor.
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  "Certain genotypes, which influence early-onset Alzheimer's disease, impact the response to
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  biological stressors, which could account for increased vulnerability to the effects of
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  nighttime light exposure," Voigt-Zuwala said in the release.
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  Previous studies have shown that light pollution is increasing by around ten percent
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  each year, causing the night sky to become brighter and reaching approximately eighty
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  percent of the global population.
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  Additionally, younger people are more likely to live in urban areas and have lifestyles that
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  may increase exposure to light at night.
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  Light pollution has been shown to disrupt the circadian rhythm and reduce the production of
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  the hormone melatonin, which can lead to sleep problems.
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  Insufficient sleep, in turn, is a proven risk factor for neurodegenerative diseases like
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  Alzheimer’s.
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  One recent study published in the American Journal of Preventive Medicine found that
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  getting only five hours of sleep per night can raise the risk of dementia by thirty percent
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  for people fifty and older.
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  Among adults who have sleep-related movement disorders, the likelihood of dementia is nearly
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  four times higher.
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  Dr.
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  Earnest Lee Murray, a board-certified neurologist at Jackson-Madison County General
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  Hospital in Jackson, Tennessee, was not involved in the study but spoke with Fox News
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  Digital about the environmental factors that can affect the prevalence of dementia like
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  Alzheimer's.
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  "We have known for some time that the lack of quality sleep has detrimental health effects,
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  and this includes an increased risk of developing cognitive difficulties later in
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  life," he said.
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  The brain relies on a circadian rhythm to restore itself during sleep, Murray added.
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  "Constant light exposure disrupts this circadian rhythm and limits the amount of time
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  the brain is in the deeper, restorative stages of sleep."
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  Based on the findings, the researchers recommend people take steps to reduce their
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  exposure to light pollution.
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  "Awareness of the association should empower people — particularly those with risk factors
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  for Alzheimer's disease — to make easy lifestyle changes," said Voigt-Zuwala.
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  "Easy-to-implement changes include using blackout curtains or sleeping with eye masks.
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  This is useful especially for those living in areas with high light pollution."
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  Although the study only examined outdoor light exposure, the researchers also suggested making
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  changes indoors, such as installing dimmers, using blue light filters, and swapping to warm
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  lightbulbs instead of cool.
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  Some have pushed for regulations to control outdoor lighting exposure.
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  Fabio Falchi, Ph.D., a researcher at the Light Pollution Science and Technology Institute in
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  Italy, told Fox News Digital, "The legislation against light pollution is usually very weak
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  and/or not well implemented.
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  It is time to start putting limits on this pollutant, too, as with the rest of the other
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  common pollutants."
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  The study did have some limitations, the researchers acknowledged.
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  The data was gathered from a subset of the U.S.
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  population, they stated, and individual outcomes may vary based on how long someone
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  lived in an area with high light exposure.
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  "The study only looked at outdoor light pollution and did not include any type of data
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  from indoor light pollution, such as from cellphones or televisions," Dr.
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  Murray noted.
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  "However, it can clearly be implied that exposure to constant light from devices can
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  lead to cognitive issues later in life, reinforcing the importance of limiting
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  nocturnal light exposure from cell phones and other devices."
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  The researchers called for more studies into the association between light pollution and
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  Alzheimer’s.
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  This is certainly an area that warrants further investigation, and we will keep you updated as
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  more information becomes available.
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  Now, let's shift gears to a topic that's been gaining quite a bit of attention lately: sleep.
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  Americans used to say we'd sleep when we were dead.
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  We viewed sleep as a waste of time — something prized by the lazy and minimized by the
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  industrious.
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  How times have changed.
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  These days, getting in bed early is cool.
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  People, especially those in younger generations, have come to better understand the
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  benefits of a good night's rest, and many now make sleep a central part of their personal
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  health routines.
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  Experts say this is a good thing: consistently solid sleep can benefit your heart, brain,
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  immune system, and mental health.
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  But our newfound love of sleep is also leading us to some strange places.
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  On social media, you can find people mixing concoctions meant to induce sleep — called
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  'sleepy girl mocktails' — and others trying on sleep aids like mouth tape, nose tape, and jaw
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  straps, sometimes all at once.
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  For many, sleep has become something to be optimized, even perfected.
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  Kate Lindsay has a fascinating new story in The New York Times that explores this growing
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  fixation — specifically, the large number of people for whom good sleep is not good enough.
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  They are sometimes called 'sleepmaxxers.'
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  Kate's story raises a question I've been wondering myself: After so many years of
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  worrying too little about sleep, is it possible some of us have started worrying too much?
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  In today's newsletter, I'll walk you through the science behind some popular methods for
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  improving sleep and the possible downsides of caring too much about it.
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  Let's start with 'sleepy girl mocktails.' These are non-alcoholic beverages that combine
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  ingredients like chamomile tea, tart cherry juice, and magnesium powder, all known for
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  their sleep-inducing properties.
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  While these drinks can be a fun and tasty way to wind down, experts caution that they are not
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  a magic bullet.
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  Consuming large quantities of any one ingredient can lead to other health issues, and
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  the placebo effect may play a significant role here.
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  Next, we have sleep aids like mouth tape, nose tape, and jaw straps.
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  These are designed to encourage nasal breathing and reduce snoring, which can improve sleep
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  quality for some people.
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  However, these methods are not universally effective and can be uncomfortable for many.
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  They should be used cautiously and ideally under the guidance of a healthcare
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  professional.
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  The rise of 'sleepmaxxing' — the idea of optimizing sleep to its fullest potential — is
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  not without its pitfalls.
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  For some, the quest for perfect sleep can become an obsession, leading to anxiety and
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  counterproductive sleep practices.
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  It's important to remember that sleep quality can vary from night to night and that stressing
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  over perfect sleep can actually make it harder to achieve.
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  So, what's the takeaway?
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  While it's great that more people are prioritizing sleep, it's crucial to approach it
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  with balance.
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  Simple, time-tested strategies like maintaining a regular sleep schedule, creating a
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  comfortable sleep environment, and limiting screen time before bed can be very effective.
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  If you're struggling with sleep, it may be best to consult a healthcare provider for
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  personalized advice.
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  That wraps up today's episode of Morning Medical with Dr.
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  Chow.
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  I hope you found our discussion on the links between light pollution and Alzheimer's
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  disease, effective interventions for smokers with COPD and asthma, and the growing obsession
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  with sleep both informative and thought-provoking.
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  Thank you for joining me, and until next time, stay healthy and take care.