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20Sep
2023

Wildfire Smoke Is Reversing Recent Clean-Air Gains Across the U.S.

Wildfire Smoke Is Reversing Recent Clean-Air Gains Across the U.S.WEDNESDAY, Sept. 20, 2023 (HealthDay News) -- When Canadian wildfire smoke shrouded the New York City skyline and spread to parts of New England this summer, millions of East Coast residents saw firsthand just how pervasive it can be.Now, a new study quantifies exactly what wildfire smoke is doing to hard-fought gains in cleaning up the air, even in Eastern states not typically affected by wildfires.“Since 2000, there's been enormous progress on improving air quality throughout much of the contiguous U.S., however around 2016 those declines in PM2.5 began to stagnate or even reverse in some states,” said study author Marissa Childs, a postdoctoral fellow at the Harvard University Center for the Environment. Wildfires release fine particulate matter, or PM2.5, into the air, driving...

Could Artificial Sweeteners in Processed Food Raise...

20 September 2023
Could Artificial Sweeteners in Processed Food Raise Depression Risk?THURSDAY, Sept. 21, 2023 (HealthDay News) -- Highly processed packaged foods and drinks may be quick, cheap and tasty, but new research suggests they’re also likely to up your risk for depression.Among big consumers of ultra-processed foods, depression risk may rise by as much as 50%, the new study found, particularly when those foods are artificially sweetened.“Given what we know about these foods and the important role of diet in mood, we were not surprised to find this association,” said study author Dr. Andrew Chan, vice chair of gastroenterology at Massachusetts General Hospital, and a professor of medicine at Harvard Medical School.At issue, he said, are foods that are “highly altered, often through industrial processes such as hydrogenation.”Hydrogenation is a chemical...

FDA Wants More Data on First Needle-Free Antidote for...

20 September 2023
FDA Wants More Data on First Needle-Free Antidote for Severe Allergic ReactionsWEDNESDAY, Sept. 20, 2023 (HealthDay News) -- In a surprising move, the U.S. Food and Drug Administration (FDA) has opted not to approve a needle-free alternative to the EpiPen for emergency treatment of severe allergic reactions.Approval of the Neffy nasal spray was widely anticipated. An FDA advisory panel voted to recommend approval of the drug for children and adults in May. While the FDA is not obligated to follow the advice of their advisory panels, it usually does. Instead, the FDA told the drug’s maker, ARS Pharmaceuticals, that it needed to conduct another study on the drug before it is approved, the company said in a statement late Tuesday night."We are deeply disappointed that this action further delays the availability of Neffy for the millions of people who are at risk...

Rat-Borne Parasite That Can Cause Brain Disease...

20 September 2023
Rat-Borne Parasite That Can Cause Brain Disease Spreading in Southern U.S.WEDNESDAY, Sept. 20, 2023 (HealthDay News) -- Brown rats found and analyzed near Atlanta now carry rat lungworm, researchers report.It's a parasite that can trigger a dangerous brain encephalitis in both people and pets, and which now threatens a wide area of the U.S. Southeast.Researchers in Georgia say the microscopic rat lungworm, known scientifically as Angiostrongylus cantonensis, typically begins its life cycle in native and exotic snails — rats probably contract the parasite after eating snails.A. cantonensis was first identified in Asia and was for many years not endemic to the United States. It first appeared in Hawaii before being spotted in Texas, Louisiana, Alabama and Florida, "likely introduced by infected rats and gastropods [snails] through trade routes, such as on...

A Baby Cries & Mom's Breast Milk Releases: New Study Could Explain Why

20 September 2023
A Baby Cries & Mom`s Breast Milk Releases: New Study Could Explain WhyWEDNESDAY, Sept. 20, 2023 (HealthDay News) -- Many a new mom knows that when her newborn cries, her milk releases. Now, animal research reveals a newly discovered brain circuit that may explain why that happens.This new study showed that when a mouse pup starts crying, sound information travels to an area of its mother’s brain called the posterior intralaminar nucleus of the thalamus (PIL). This then sends signals to oxytocin-releasing brain cells (neurons) in another region called the hypothalamus, which is a control center for hormone activity.While most of the time, these hypothalamus neurons are kept in check by proteins acting as gatekeepers to prevent wasted milk, after 30 seconds of continuous crying, signals from the PIL were found to build up and overpower these inhibitory...
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