Science AMA Series: I’m Michael Siegel, a professor of community health sciences at Boston University’s School of Public Health. I do research on firearm violence. AMA!
Half the Coral in the Great Barrier Reef Has Died Since 2016 (paper sourced in article)
Doctors who prescribe homeopathy ignore other medical guidelines, finds new study which looked at all the 7618 primary care practices in England.
MIT engineers have developed a continuous manufacturing process that produces long strips of high-quality graphene. The team’s results are the first demonstration of an industrial, scalable method for manufacturing high-quality graphene.
New drug uses antibodies to stop chronic migraines by blocking the neural pathway that sends pain signals to the brain during a migraine. Phase III trials on about 1,000 subjects are complete now and there are already plans for it to be approved by the FDA.
Due to climate change the niche of giant trees is projected to increase by ~4 million km2 globally - "Our results imply that strategic management could in principle facilitate the expansion of giant forests, securing critically endangered biodiversity as well as carbon storage."
Alzheimer’s Disease Starts in Childhood, with Symptoms Found in Babies Less Than a Year Old study in Metropolitan Mexico City finds . APOE4 carriers have higher suicide risk and higher odds of reaching NFT stage V at ? 40 years of age
A rare mutation among the Bajau people lets them stay underwater longer: natural selection at the PDE10A gene has increased spleen size in the Bajau, providing them with a larger reservoir of oxygenated red blood cells.
Oil spills could be soaked up by a new floating substance that combines waste from the petroleum industry and cooking oil. The new polymer acted like a sponge to remove crude oil and diesel from seawater. The polymer can be squeezed to remove the oil and then reused.
Americans waste 150,000 tons of food each day – equal to a pound per person. USDA research shows people with healthy diets rich in fruit and vegetables are the most wasteful.
Researchers found that simply being told that a performer is a professional or a student changes the way the brain responds to music. They also found that overcoming this bias took a deliberate effort.
Cold Temp Exposure Causes Epigenetic Changes in Fat Cells
Superionic ice has been created in the lab for the first time. The ultra-conductive version of ice, which accounts for 60% of Uranus and Neptune, was formed by compressing ice to 25,000 times the atmospheric pressure felt at sea level. The resulting ice was sixty times denser than regular water.
Bold and Aggressive Behavior Means Birds Thrive in Cities
A stunning cure for one of the world's most devastating blood diseases: A pioneering gene therapy vanquishes beta thalassemia in a pivotal clinical trial.
A prototype early warning system for the four most common types of cancer makes a visible mole appear on the skin when calcium levels indicate a tumor has developed.
Strong carbon fiber artificial muscles can lift 12,600 times their own weight - The new muscles are made from carbon fiber-reinforced siloxane rubber and have coiled geometry, supporting up to 60 MPa of mechanical stress, providing tensile strokes higher than 25% and specific work of up to 758 J/kg.
Male fruit flies enjoy ejaculation. Fly brains showed increased signs of a rewarding experience after ejaculating, even with no females present.
Mars' tiny moons (Phobos and Deimos) formed after proto-Mars collided with a dwarf-planet-sized object, finds new study.
Marijuana's effects on young brains diminish 72 hours after use, research says. Findings could be an indication that some of the negative cognitive effects found in previous studies may be due to the residual effects of cannabis or potentially from withdrawal effects in heavy cannabis users.
'Exploding Ant' Rips Itself Apart To Protect Its Own
New microscope creates 3D movies of cells in living organisms. "It's like Star Trek" say Harvard researchers.
In an example of recent human evolution, scientists find free divers from Southeast Asia evolved bigger spleens, thought to give them greater endurance when holding their breaths.
Machine Learning algorithm can predict evolution of chaotic models without knowing the equations. This may improve weather prediction some day.
Fluorescent silk can kill harmful bacteria as biomedical and environmental remedy
Prehistoric humans may have practiced brain surgery on cows
Researchers who found that /r/depression helped redditors improve their emotional state released a new study on long-term effects. They found that members of reddit's mental health communities faced communication challenges, but the subreddits helped them advance their writing.
Drowning caused 80% of deaths from Hurricane Harvey. Study finds 78% of those deaths occurred outside zones designated as being at higher risk for flooding. US authorities outline floodplains for 100 and 500 year floods that had a 1% and 0.2% probability respectively of occurring in any given year.
'Mono' virus linked to 7 serious diseases, including lupus, multiple sclerosis, arthritis, inflammatory bowel disease, celiac disease, and type 1 diabetes. Combined, these diseases affect nearly 8 million people in the U.S.
Enlarged spleen key to diving endurance of ‘sea nomads’
Using human stem cells, researchers create 3-D model of the brain to study a mutation tied to schizophrenia, bipolar disorder, and depression
A new imaging technique called Adaptive Optical Lattice Light-Sheet Microscopy has captured cellular dynamics in living organisms with unprecedented detail.
New Study Says Ancient Humans Hunted Big Mammals To Extinction
A new study has confirmed that Hans Asperger, the Austrian pediatrician for whom a form of autism is named, collaborated with the Nazis and actively assisted in the killing of disabled children
In a series of experiments, researchers found people at higher elevations in an office building were more willing to take financial risks. This effect vanished when participants were informed that floor level influences behavior, and when people could not see that they were on a higher floor level.
A randomized trial shows the critical impact of a face-to-face doctor visit for patient perception of compassion, communication, professionalism.
Scientists (EPFL) have examined a slice from a meteorite that contains large diamonds formed at high pressure. The study shows that the parent body from which the meteorite came was a planetary embryo of a size between Mercury to Mars. The discovery is published in Nature Communications.
Religiosity is generally tied to reduced suicide risk, but the opposite may be true for LGBT adults. Faith-based partners in suicide prevention and intervention services “should be willing and equipped to assist all people who seek their services, regardless of sexual orientation,” the authors write
When threatened by other insects, minor workers ants of species Colobopsis explodens can actively rupture their body wall. Apart from leading to the ants' imminent death, the "explosion" releases a sticky, toxic liquid from their enlarged glands, in order to either kill or hold off the enemy.
This new microscope makes movies from inside living cells (paper sourced in article)
Fertility preservation in testicular cancer – predictors of spermatogenesis
2786 prince_harming *Edit: I really appreciate everyone's comments and questions, but I'd like to encourage you to direct them to a qualified professional. Even with a degree under my belt, I'm just a guy, and I don't want anyone basing their decisions on anything I might seem to have suggested. If you decide one thing from all of this, it's that you should talk to a dietitian about whatever questions you have, and use them as your main resource for reliable nutrition information. It's what they're trained for, and believe me, they worked hard to get there.* They keep hitting this "alcohol is good/bad" ball back and forth, it's gotta be confusing to a lot of people. I'm inclined to believe that people shouldn't be drinking with the aim of harnessing any potential health benefits, and instead should just understand that, for most people, the occasional drink isn't necessarily going to do them much *harm.* It seems like a lot of people use the "daily drinking is healthy, right??" excuse to indulge more than might be wise for them. Either way, it's too early for giving sweeping recommendations like that, in either direction. Honestly, as an Applied Human Nutrition grad, this is one of the more frustrating things that both nutrition professionals and people in general have to deal with. There are just far too many generalized statements about things which, I think, don't take into account individual factors. When you're dealing with something as regular and lifelong as, well, *eating*, those differences can pile up over time, leading to vastly varied outcomes. This can lead to a lot of inconclusive science for nutrition professionals to try to sort through, and a lot of misunderstood information for everyone else. Just taking into account differences in activity level and lifestyle, saying that "X is good, Y is bad," is often misleading. "Good" or "bad" *for whom* is often either not stated or conclusively definable in the research, not specified--or contexualized--in the reporting, or is totally misunderstood by the layman. As a result, we get people treating population-subset-specific findings as if they can be generalized across an entire population. It just leads to so much confusion and contradiction in the general discourse. This is why people need dietitians more than they appreciate, to navigate this labyrinth of information. (And I say this as someone who, degree notwithstanding, currently has no plans to become one.) With all that going on, it's no wonder so many people can't take Nutrition seriously as a science.
1888 Sir_Wemblesworth The NHMRC of Australia has already done away with the sex difference of alcohol consumption. It's a solid no more than two standard drinks a day, no more than four on any one occasion, and ideally none when pregnant or breastfeeding. This is all regardless of sex. Edit: updated some words.
217 FrogTrainer I could see something up to 25% more consumption for Men vs Women, men being heavier on average. But double? How did that ever happen?
301 BobADemon I thought that US guideline had to do with body weight differences, and less on gender, being that women on average are smaller than men. Meaning that for the average citizen the guideline is a good guide. Edit: More about intoxication and less longterm health.
73 john22544 So there is a comparison of life expectancy between those that drink less than 100 grams per week, between 100 and 200, between 200 and 350, and more than 350. What about the life expectancy of total abstainers? The headline claims that the study found no overall health benefits from moderate drinking, but the article at least doesn't even address the outcome differences between moderate drinkers and total abstainers. When I have tried to find studies on this issue in the past every study I have found saw a higher life expectancy in moderate drinkers than total abstainers even when controlling for past alcohol use, gender, income, etc. edit: Thank you to OP for posting the study. "Our aim was to characterise risk thresholds for all-cause mortality and cardiovascular disease subtypes **in current drinkers of alcohol**." This study didn't even look at drinking versus non-drinking. The first claim in the headline is not supported by the study, it is not something that the study looked at.