Recent comments in /f/science

Nottheone1101 t1_j6onr94 wrote

Reply to comment by tgf2008 in Black and Hispanic hairdressers are exposed to a complex mixture of chemicals, many of them unknown, potentially hazardous, and undisclosed on product labels, researchers report. There are more than 700,000 hairdressers in the United States, more than 90% of whom are estimated to be women. by MistWeaver80

Look at OPs post history, OP tends only to post about minorities and birds. OP has a lot of time on their hands to post as much as they do

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AutoModerator t1_j6olqmf wrote

Reply to Male alcohol use has a significant negative influence on in vitro fertilization success rates, increasing patient financial burden and emotional stress. Study reveals that the more a male drinks before providing sperm for an IVF pregnancy, the less likely the pregnancy will be successful. by MistWeaver80

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sock-opera t1_j6oil3s wrote

Reply to comment by roo-ster in Researchers develop coating that prevents synthetic fabrics from shedding harmful microplastics in the wash by BlitzOrion

I don’t think it’s that simple because the alternatives have environmental issues as well. For example, cotton is very carbon and water intensive (organic even more so) for the amount of times you can use it before it breaks down (see: cotton vs plastic shopping bags). Presumably recycled plastic clothing is less carbon intensive than cotton.

Textile production accounts for about 10% of carbon emissions. I’m not sure we currently have a good way to compare the negative externalities of additional carbon footprint and micro plastic pollution.

I think the ideal solution likely involves consumers keeping their clothing for longer, purchasing more durable clothing and not participating in “fast fashion”.

Don’t get me wrong, I prefer cotton and wool. Synthetics also have their place in many speciality and sporting applications. I believe main issue is the sheer scale of consumption and waste that we encourage in a consumer economy.

If anyone knows about the carbon footprint of wool, hemp or alternative textiles I would be curious to hear.

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Liz600 t1_j6oi11c wrote

Reply to comment by Queasy-Bite-7514 in New study (n = 15,764) shows repeated concussions are linked to worse brain function in later life by unswsydney

No, I mean going 20+ mph across a slick and extremely hard surface, hurtling yourself into the air while spinning backwards, aiming to land perfectly balanced on one foot, all while while wearing leather boots with steel ankle plates, 1.5 inch heels, wheels of extremely sharp spikes on your toes that are attached to concave razor blades that glide across the top of the ice, and are designed not to cut into it like hockey skates. And doing all of that in only tights and what amounts to a stretchy velvet swimsuit; no padding or helmets in sight (or allowed). For 4+ hours a day, depending on what level you compete at. Unless you’re in a competition, you’re also doing that in the same space as 3-9 other skaters at the same time.

It’s a bit more involved than running.

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its_ean t1_j6o8q6i wrote

Reply to Depression, poor mental health in young adults linked to higher cardiovascular risks. The research also found people without established cardiovascular disease, those who reported depression had 1.8 times higher odds of suboptimal cardiovascular health than those without depression. by Wagamaga

paper:

Psychological Health, Well-Being, and the Mind-Heart-Body Connection: A Scientific Statement From the American Heart Association

https://doi.org/10.1161/CIR.0000000000000947

>However, specific emotional experiences have distinct neurobiological and behavioral features, and they uniquely contribute to [Cardio Vascular Disease] risk

I'm a little iffy on "uniquely," as mental health is physical health, and there are other connections. The endocrine system jumps out. The mind and body are, like, fundamentally the same thing.

Glad people have been investigating this. Glad the American Heart Association is issuing evidence-backed guidance that cardiovascular specialists can't ignore mental health.

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markatt83 t1_j6o6u1z wrote

Reply to Study finds that poor sleep quality increases aggression, possibly by affecting emotional cognition by chrisdh79

Every semester I have a conversation with my students. The conversation goes something like this…. “You have a prefrontal cortex and it helps regulate your emotions. It therefore keeps you in emotional control throughout your day. The prefrontal cortex is the only part of your brain that needs sleep during the night. Since it’s the goal keeper of your emotions this is why you have wild dreams that make little sense. Have you ever been falling asleep and you ate a twizzler earlier in the day, then all of the sudden right before you fall asleep, you have the thought that you’re driving a twizzler down the freeway and running over puppy dogs?” My students usually laugh. Then I say, “That’s because your prefrontal cortex is going to sleep and the rest of your brain decides to let all the regulated thoughts go at once.” My students begin to understand. Then I ask, “What about days where you don’t get enough sleep. Are you good at controlling your emotions those days? Do you cry more on those days?” They typically respond with a “Yes.” I then say, “This is why the iPad, iPhone, and tablet need to be in the kitchen when you go to bed. These devices over time will rob years from your life if they are constantly disrupting your sleep patterns. It could also cost you relationships overtime.” They are always understanding of what I’m saying. It’s a shock to me. Then I yell at them for not singing in tune but they still realize how much I care. Ha ha ha!

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