Breaking News
December 17, 2018 - CTF along with NTAP and Sage announce first-ever open data portal for neurofibromatosis
December 17, 2018 - Intimacy: The Elusive Fountain of Youth?
December 17, 2018 - Will saliva translate to a real diagnostic tool?
December 17, 2018 - DFG establishes nine new Research Units and one new Clinical Research Unit
December 17, 2018 - Assisted living’s breakneck growth leaves patient safety behind
December 17, 2018 - America’s teens report dramatic increase in their use of vaping devices in just one year
December 17, 2018 - Enlarged heart linked to a higher risk of dementia
December 17, 2018 - Prostate cancer detection using MRI now first-line investigation tool
December 17, 2018 - Loughborough academics part of new project investigating effectiveness of personalized breast cancer screening
December 17, 2018 - Adolescents who use cognitive reappraisal had better metabolic measures, shows study
December 17, 2018 - Probiotics may offer therapeutic benefits for biopolar patients
December 17, 2018 - Stealth BioTherapeutics Granted Fast Track Designation for Elamipretide for the Treatment of Dry Age-Related Macular Degeneration with Geographic Atrophy
December 17, 2018 - Studies reveal role of red meat in gut bacteria, heart disease development
December 17, 2018 - Eisai enters into agreement with Eurofarma for its anti-obesity agent lorcaserin
December 17, 2018 - Researchers use brain connectome to reassess neuroimaging findings of Alzheimer’s disease
December 17, 2018 - “Miracle” baby survives Ebola in Congo and rapid a new Ebola detection device
December 17, 2018 - Mechanisms behind neonatal diabetes uncovered
December 17, 2018 - AHF urges the WHO to expedite approval process for vaccine effective against Ebola
December 17, 2018 - Study finds misuse of benzodiazepines to be highest among young adults
December 17, 2018 - TGen receives PayPal grant to underwrite costs of genetic tests for children with rare disorders
December 17, 2018 - New research highlights why HIV-infected patients suffer higher rates of cancer
December 17, 2018 - Antibiotic-resistant bacteria could soon be targeted with Alzheimer’s drug
December 17, 2018 - Rutgers scientists take an important step in making diseased hearts heal themselves
December 17, 2018 - Tailored Feedback at CRC Screen Improves Lifestyle Behaviors
December 17, 2018 - Loss of two genes drives a deadly form of colorectal cancer, reveals a potential treatment
December 17, 2018 - How the Mediterranean Diet Can Help Women’s Hearts
December 17, 2018 - Sustained connections associated with symptoms of autism
December 17, 2018 - Concussion rates among young football players were higher than previously reported
December 17, 2018 - Cresco Labs granted approval to operate marijuana dispensary in Ohio
December 17, 2018 - Study provides insight into health risks facing new mothers
December 17, 2018 - AMSBIO expands Wnt signaling pathway product range to aid research
December 16, 2018 - Surgical treatment unnecessary for many prostate cancer patients
December 16, 2018 - Excess weight responsible for cancers globally finds report
December 16, 2018 - Regular sex associated with greater enjoyment of life in seniors
December 16, 2018 - Social stigma contributes to poor mental health in the autistic community
December 16, 2018 - Multidisciplinary team successfully performs complex surgery on patient suffering from enlarged skull
December 16, 2018 - Experts analyze data that can guide antidepressant discontinuation
December 16, 2018 - Menlo Therapeutics’ Successful Phase 2 Clinical Trial of Serlopitant Demonstrates Reduction of Pruritus Associated with Psoriasis
December 16, 2018 - Siblings of children with autism or ADHD are at elevated risk for both disorders
December 16, 2018 - New project aims to understand why and how metabolic disorders develop in patients
December 16, 2018 - Diets containing GM maize have no harmful effects on health or metabolism of rats
December 16, 2018 - Are doctors and teachers confusing immaturity and attention deficit?
December 16, 2018 - Hearing loss linked with increased risk for premature death
December 16, 2018 - Chromatrap buffer reagents for lysing cells offer many benefits
December 16, 2018 - Young Breast Cancer Patients Face Higher Risk for Osteoporosis
December 16, 2018 - 3-D printing offers helping hand to people with arthritis
December 16, 2018 - Community Health Choice helps manage complex and chronic care conditions
December 16, 2018 - Regular trips out could dramatically reduce depression in older age
December 16, 2018 - CWRU to use VivaLNK’s Vital Scout device for stress study in student athletes
December 16, 2018 - ‘Easy Way Out’? Stigma May Keep Many From Weight Loss Surgery
December 16, 2018 - Gout drug may protect against chronic kidney disease
December 16, 2018 - Talking about memories enhances the wellbeing of older and younger people
December 16, 2018 - Occupational exposure to pesticides increases risk for cardiovascular disease among Latinos
December 16, 2018 - A biomarker in the brain’s circulation system may be Alzheimer’s earliest warning
December 16, 2018 - Magnesium may play important role in optimizing vitamin D levels, study shows
December 16, 2018 - The effect of probiotics on intestinal flora of premature babies
December 16, 2018 - Parents spend more time talking with kids about mechanics of using mobile devices
December 16, 2018 - Biohaven Announces Positive Results from Ongoing Rimegepant Long-Term Safety Study
December 16, 2018 - Arterial stiffness may predict dementia risk
December 16, 2018 - Study explores link between work stress and increased cancer risk
December 16, 2018 - Sex work criminalization linked to incidences of violence finds study
December 16, 2018 - Johns Hopkins researchers discover swarming behavior in fish-dwelling parasite
December 16, 2018 - Schistosomiasis prevention and treatment could help control HIV
December 16, 2018 - Early postpartum opioids linked with persistent usage
December 16, 2018 - Johns Hopkins researchers identify molecular causes of necrotizing enterocolitis in preemies
December 16, 2018 - Advanced illumination expands capabilities of light-sheet microscopy
December 16, 2018 - Alzheimer’s could possibly be spread via contaminated neurosurgery
December 16, 2018 - Unraveling the complexity of cancer biology can prompt new avenues for drug development
December 16, 2018 - Inflammatory Bowel Disease, Prostate Cancer Linked
December 16, 2018 - Cannabis youth prevention strategy should target mental wellbeing
December 15, 2018 - Recent developments and challenges in hMAT inhibitors
December 15, 2018 - Sewage bacteria found lurking in Hudson River sediments
December 15, 2018 - CDC selects UMass Amherst biostatistician model that helps predict influenza outbreaks
December 15, 2018 - Researchers reveal brain mechanism that drives itch-evoked scratching behavior
December 15, 2018 - New computer model helps predict course of the disease in prostate cancer patients
December 15, 2018 - Obesity to Blame for Almost 1 in 25 Cancers Worldwide
December 15, 2018 - How the brain tells you to scratch that itch
December 15, 2018 - New findings could help develop new immunotherapies against cancer
December 15, 2018 - World’s largest AI-powered medical research network launched by OWKIN
December 15, 2018 - Young people suffering chronic pain battle isolation and stigma as they struggle to forge their identities
Protect your heart and health during ‘dog days’ of summer

Protect your heart and health during ‘dog days’ of summer

image_pdfDownload PDFimage_print

Summer is a time for barbecues and other outdoor fun, but it’s also a time for sweltering heat. And experts say everyone, especially the elderly and very young, need to know how to limit the potentially deadly effects of high temperatures.

The ancient Greeks and Romans called the sultriest days of summer the “dog days.” The Old Farmer’s Almanac marks the time as 40 days from July 3 to Aug. 11, coinciding with the rising of the star Sirius, also called the Dog Star.

Already this year, the dog days have proved dangerous.

Heat warnings and advisories have been issued over a large swath of the country, with heat waves smothering the Northeast and shifting into the South and West. In Quebec, at least 70 people reportedly have died from a heat wave hitting eastern and central Canada.

More than 600 people die every year in the United States from heat-related illnesses that are preventable, according to the U.S. Centers for Disease Control and Prevention. The agency estimates more than 65,000 Americans visit an emergency room for acute heat illness each summer.

“I think people underestimate how quickly it happens. And when it starts to happen, if someone is progressing to heat exhaustion or heat stroke, you lose your self-awareness,” said Dr. Robert O’Connor, chair of emergency medicine at the University of Virginia. “It’s important to keep an eye on those around you for heat-related problems. If someone is flushed, dizzy or uncoordinated, it can be an early sign.”

Dehydration can begin within just a few hours of extreme heat, so drinking extra fluids is important, especially when taking certain medications. Fatigue, headaches, muscle cramps, dizziness, sleepiness and dry mouth can all be signs of dehydration.

Dehydration causes the heart to work harder, putting it at risk. Hydration helps the heart more easily pump blood through the blood vessels to the muscles. And, it helps the muscles work efficiently.

A 2016 Environmental Protection Agency analysis of heat-related deaths said high temperatures could be a factor in many more deaths than officials realize—or count.

“By studying how daily death rates vary with temperature in selected cities, scientists have found that extreme heat contributes to far more deaths than the official death certificates might suggest,” the report said. “This is because the stress of a hot day can increase the chance of dying from a heart attack, other heart conditions, or respiratory diseases such as pneumonia.”

While infants and the elderly are more vulnerable to problems from heat, O’Connor said sometimes medicines can make someone more sensitive to heat and dehydration.

“They should talk to their doctor and look up their medications to see if it predisposes them,” he said.

Heat exhaustion and heat stroke are serious medical emergencies that require treatment. Both can cause headaches, nausea or vomiting. Heat stroke also can cause a high fever, warm skin with no sweating, and confusion or unconsciousness.

Heat stroke is not the same as a stroke. Stroke happens when a blood vessel to the brain either bursts or is blocked by a clot, causing a decrease in oxygen flow to the brain.

Beyond some of the obvious and sometimes extreme physical symptoms brought on by sweltering temperatures, a recent study showed it could affect how you think. And it doesn’t just affect the most vulnerable.

A group of researchers at Harvard University in Boston published an observational study last week showing students who lived in dormitories without air conditioning during a heat wave performed worse on a series of cognitive tests compared with students who lived in air-conditioned dorms.

The study was conducted over 12 consecutive days in the summer of 2016. Students living in buildings without AC experienced 13.4 percent longer reaction times on color-word tests, and 13.3 percent lower scores on addition/subtraction tests compared with students in air-conditioned rooms. The research showed students in rooms with AC were not just faster in their responses, but also more accurate.

Hot summers and heat waves won’t be going away any time soon, according to federal research. In fact, unusually high temperatures have become more common in recent decades, and heat waves are expected to become longer, more frequent and more intense in the future, according to the EPA and the CDC.

O’Connor said thinking ahead and being prepared in the heat will help prevent trouble.

“Drink plenty of fluids and limit the amount of time you are in the heat. Even if someone comes into a cooler environment for a few minutes every hour, that can prevent a heat-related illness,” he said.

“Limit outdoor activity to early morning or late evening, and stay in the shade,” O’Connor said. “t might be tough if you are working outside or on the golf course. Soak a towel in cold water and put it around your neck. Evaporative cooling, dousing in cold water and letting it evaporate, is the best way to eliminate heat.”


Explore further:
Beat the heat on your summer vacation

Tagged with:

About author

Related Articles