All Sauce from Weekly Gravy:

Jouncing along to school in a fume-spewing, rattletrap yellow bus is practically a rite of passage for most American students. But outdated buses actually wind up costing kids many days of education, thanks to the clouds of diesel exhaust left in their wake, a new study argues. School districts that upgrade to a “greener” bus fleet have higher attendance rates than those with older, dirtier-running buses, researchers report. Replacing all school buses built prior to 2000 could add more than 1.3 million additional student days of attendance each year in the United States, the study estimated. About 25 million children ride the bus to school every day, the researchers said. Older buses cough out higher levels of diesel exhaust, which can trigger asthma attacks in kids, said lead researcher Meredith Pedde, a research fellow in epidemiology with the University of Michigan. “Air pollution can even affect those without asthma,” Pedde added. “It has been linked to upper respiratory infections, pneumonia and other types of respiratory illness, so it might be impacting a larger student body than just asthmatic students.” To see whether cleaner buses cut down on student absences, Pedde and her colleagues examined data from the U.S. Environmental Protection Agency’s School Bus Rebate Program. The EPA program doled out more than $7 million annually to replace or retrofit old polluting buses between 2012 and…  read on >  read on >

(HealthDay News) – The U.S. Justice Department on Monday appealed a Texas court ruling that invalidates the U.S. Food and Drug Administration’s approval in 2020 of mifepristone, the first of two drugs taken during a medical abortion. The ruling by U.S. District Judge Matthew Kacsmaryk in Texas is “extraordinary and unprecedented,” the Justice Department said in its appeal. “If allowed to take effect, the court’s order would thwart FDA’s scientific judgment and severely harm women, particularly those for whom mifepristone is a medical or practical necessity.” Pharmaceutical executives have also weighed in on the ruling, signing a letter on Monday warning about the impact if the Texas order was to take effect. “If courts can overturn drug approvals without regard for science or evidence, or for the complexity required to fully vet the safety and efficacy of new drugs, any medicine is at risk for the same outcome as mifepristone,” stated the letter, according to the Associated Press. While Kacsmaryk’s ruling said the order would not take effect for seven days, within 20 minutes of the order a federal judge in Washington state issued a ruling directing the FDA to make no changes that would restrict access to the drug in 17 states where Democrats had sued, the AP reported. The Justice Department has asked for clarification on that ruling. The Texas lawsuit was filed…  read on >  read on >

Intermittent fasting is all the rage due to its laundry list of potential health benefits — from weight loss to longevity. Now, new research suggests that it may beat low-calorie diets when it comes to preventing type 2 diabetes in high-risk people. Folks who only ate between 8 a.m. and noon for three days a week and ate normally for the other four days showed greater improvements in blood sugar metabolism for at least six months when compared with people who followed a low-calorie diet. Interestingly, folks in both groups lost the same amount of weight during the study period. “Our study indicates that meal timing and fasting advice extends the health benefits of a restricted calorie diet, independently from weight loss, and this may be influential in clinical practice,” said study author Xiao Tong Teong, a postdoctoral researcher at the University of Adelaide in Australia. For the study, researchers compared a time-restricted intermittent fasting diet to a low-calorie diet in more than 200 people, to see which had a greater effect on the risk for developing type 2 diabetes. They looked at postprandial blood sugar, a measure of glucose in the bloodstream after eating. If these levels are too high, it suggests a greater risk of type 2 diabetes, the form of the disease most closely related to obesity. Previous studies suggested eating earlier…  read on >  read on >

ChatGPT, the AI chatbot everyone is talking about, can often give reliable answers to questions about breast cancer, a new study finds. But it’s not yet ready to replace your physician. The big caveat, researchers said, is that the information is not always trustworthy, or offers only a small part of the story. So at least for now, they said, take your medical questions to your human doctor. ChatGPT is a chatbot driven by artificial intelligence technology that allows it to have human-like conversations — instantly generating responses to just about any prompt a person can cook up. Those responses are based on the chatbot’s “pre-training” with a massive amount of data, including information gathered from the internet. The technology was launched last November, and within two months it had a record-setting 100 million monthly users, according to a report from the investment bank UBS. ChatGPT has also made headlines by reportedly acing the college SATs, and even passing the U.S. medical licensing exam. Despite that suggestion that the chatbot could be a doctor, it’s still far from clear whether it provides users with trustworthy medical information. The new study, published April 4 in the journal Radiology, tested the chatbot’s ability to answer some “fundamental” questions on breast cancer screening and prevention. Overall, it found, the technology provided appropriate answers 88% of the time. Whether…  read on >  read on >

A Texas federal judge has issued a preliminary ruling that invalidates the U.S. Food and Drug Administration approval in 2000 of mifepristone, the first of two drugs most commonly taken during a medical abortion. Judge Matthew Kacsmaryk added a seven-day stay to his order, issued Friday, to give the FDA time to mount an appeal. About an hour later, Washington state federal judge Thomas Rice issued a countering decision in a case filed there, ordering a halt to “any action to remove mifepristone from the market or otherwise cause the drug to become less available.” The two opposing rulings would suggest that any final decision on the availability of mifepristone, which is typically given alongside misoprostol to cause an abortion, may end up at the Supreme Court. The Washington state lawsuit originated with Democratic attorneys general who were challenging restrictions in place that made it difficult to obtain mifepristone. The Texas decision involves a lawsuit filed by a coalition made up of doctors and anti-abortion groups who sought an end to the use of mifepristone, claiming that the FDA’s decision 23 years ago to approve the drug was made hastily and without proper regard for its overall safety. In his decision, Kacsmaryk said that, ”The court does not second-guess [the] FDA’s decision-making lightly. But here, FDA acquiesced on its legitimate safety concerns — in violation…  read on >  read on >

Put out that cigarette for the health of your four-legged friend. When smokers search social media for anti-tobacco information, they tend to engage most with posts about the risk of secondhand smoke on their pets, a new study reveals. Posts with new information about harmful chemicals also receive high engagement, researchers found. “Our results show that people respond to messaging on how smoking negatively affects the lives of those they care about, including pets. Messages that are personally meaningful to smokers can help to generate positive behavioral changes among smokers,” said principal investigator Hong Xue, an associate professor of health administration at George Mason University in Fairfax, Va. “Anti-tobacco campaigns can use these findings to improve their campaigns, better engage the public, and more effectively promote reasons to stop smoking,” he said in a university news release. The researchers used machine learning and social media data to analyze factors that influence effective anti-smoking campaigns and user engagement. The study was led by Xue and GMU associate professor Gilbert Gimm. They described their work as the first large-scale social media data mining study that examined key anti-tobacco campaigns in the United States. Their research also found that large campaigns from government and nonprofit organizations had greater user engagement than smaller and local campaigns. Facebook users were much more likely to engage in messages with videos. About…  read on >  read on >

Dangerously low blood pressure is considered an “invisible” consequence of paralysis, adding to the woes of as many as 9 out of 10 people with spinal cord injuries. Now, a new implant has been developed that treats the problem by delivering electrical stimulation to a select group of spinal neurons. The device, called a neuroprosthetic baroflex, stimulates the lower part of the spine, which contains the most neurons involved in blood pressure control, researchers said. The findings were published April 6 as an essay in Science. Spinal cord injury often interferes with the brain’s ability to modulate blood pressure when a person changes posture, such as moving from a sitting to a standing position. This ability, called the baroreceptor reflex, involves a series of quick responses within the body to keep blood pressure in a normal range when someone abruptly changes position, the Cleveland Clinic says. The brain senses that artery walls are stretching due to a sudden increase in blood pressure. In response, the brain can order the body to compensate, though a series of reactions that take place within a couple of heartbeats. A person with a spinal cord injury can be rendered dizzy, nauseous or prone to fainting if their baroreceptor reflex fails and their blood pressure drops to very low levels as a result of trying to move. “Almost all of…  read on >  read on >

You may be struggling with stomach pain and digestive distress without understanding why, thinking it might be something you ate. Can stress cause stomach pain? Stress, especially chronic stress, can indeed increase your risk for gastrointestinal (GI) problems. “Stress and anxiety are common causes of stomach pain and other GI symptoms,” Dr. Nina Gupta, a gastroenterologist at University of Chicago Medicine, said recently in an article. Stress impacts the digestive system through the nervous system, and can affect food movement and the gut’s bacterial balance. Stress can also cause people to eat poorly, smoke and/or drink too much alcohol or caffeine — all habits that can trigger stomach pain. Outside the brain, the gut has the greatest area of nerves. This component of the autonomic nervous system — known as the enteric nervous system — is sometimes referred to as the “second brain.” According to Harvard Health, “neurons lining the digestive tract signal muscle cells to initiate a series of contractions that propel food farther along, breaking it down into nutrients and waste.” The enteric nervous system communicates with the central nervous system and is known as the “brain-gut axis.” This connection explains why stress may cause digestive problems. According to the American Psychological Association, stress may increase the risk for or exacerbate symptoms of the following gut diseases or dysfunction: Bloating, burping, gas Heartburn,…  read on >  read on >

For what they say is the first time, British researchers report that they have found the spread of COVID-19 in households is linked to the presence of the virus on hands and surfaces, not just in the air. The investigators collected data from households at the height of the pandemic, finding that people were much more likely to get COVID-19 from someone in their house if virus was present on hands or frequently touched places, like refrigerator door handles or sink faucets. “There’s no doubt that if you have COVID-19, you’re emitting the virus into the air as micro-aerosols as well as large droplets that land on your hands and the surfaces around you. What hasn’t been shown, until now, is that the presence of the virus on people’s hands or household surfaces predicts transmission to contacts,” said study author Ajit Lalvani. He is director of the National Institute of Health and Care Research (NIHR) Health Protection Research Unit (HPRU) in Respiratory Infections. The NIHR HPRU is a research partnership between Imperial College London and the UK Health Security Agency. Researchers from University of Oxford also worked on the study. “Our real-life study in London households provides the first empirical evidence to show that the presence of SARS-CoV-2 on people’s hands and surfaces contributes significantly to spread of COVID-19. Since we didn’t systematically sample household…  read on >  read on >

Four out of 10 people who have lingering health issues after COVID-19 infection can count bothersome sleep problems among them. About 41% of those with so-called long COVID have moderate to severe sleep issues, according to new research from the Cleveland Clinic in Ohio. Black patients are three times more likely to develop these sleep disturbances. “Sleep difficulties and fatigue are widely reported by people with long COVID, but little is known about the severity and factors associated with these symptoms,” said lead author Dr. Cinthya Pena Orbea, assistant professor of medicine at Cleveland Clinic’s Sleep Disorders Center. “Our findings not only emphasize the importance of identification of sleep disturbance in long COVID considering its impact on patients’ quality of life, daytime functioning and medical health status, but they also draw the attention to the persistent inequities seen throughout the COVID-19 pandemic,” Pena Orbea said in a clinic news release. Risk factors for these lingering sleep disturbances include race, hospitalization for COVID-19, and greater severity of anxiety and fatigue, she and her colleagues found. The researchers analyzed data collected from 962 long-COVID patients who were treated at Cleveland Clinic’s reCOVer Clinic between February 2021 and April 2022. The patients, all adults, completed sleep disturbance and fatigue questionnaires. Among the other findings: About 67% reported moderate to severe fatigue. About 22% reported severe fatigue. More than…  read on >  read on >