Medical Science

https://www.npr.org/sections/goatsandsoda/2022/03/03/1083751272/striking-new-evidence-points-to-seafood-market-in-wuhan-as-pandemic-origin-point Given how intertwined this is with stats, I was almost considering posting this in the math subforum. But since there were other elements to it, I figured I'd post it here. I'm open to re-evaluating my views on the lab leak theory, but there are still a few questions lingering in my mind. A: They don't name the specific studies by name, and claim that said studies are just "preliminary"; does this mean they've yet to be published? If so, how will we know where to find them once they are published? Until th…

Hello, is it true that chyme (the liquid result of hydrochloric acid in the stomach breaking down our food) can solidify again into feces? I was under the impression that we don't have a freezer in our stomach, so there's no way it would solidify again right?

I would like to know the name of the device used to examine the eyes and the retina such as used to check a diabetics eyes for changes. Photos/pictures can be taken. I will describe what they look like. They have a chin rest and eye piece which focuses on the eye and they have a lens to magnify. A person will sit in front of it and put their chin on the chin rest so that the operator can take the pictures of the retina. I have searched and searched but cannot find the name of it. I have checked ophthalmology devices, companies selling such devices to opticians etc but have not found the name of it. Can anyone name the item that I am thinking about? [EDIT] F…

Here are today's UK figures from the BBC Note how the hospitilisation and then deaths lag behind the cases, but they are now catching up.

What is the latest evidence on how long it takes for a person who catches COVID to be no longer able to transmit the virus? I'm sure there's variability, but what's the upper limit of how long a person can be a transmitter?

I was wondering how pyridine affects the body in such a way that it would cause impotence, as I work in a lab where it is used often. Would impotence by pyridine make the use of Viagra nulified, or would Viagra be able to stimulate the areas of the body which would otherwise be broken down by the pyridine.

May be there is some scientific interpretation? 8IDl2p_PvmA

Once everyone has been vaccinated, is it to be expected that COVID will simply die off in lieu of any further hosts or will it be forever bouncing around like the flu, opportunistically infecting the odd unvaccinated person or the 5% of the vaccinated (as the vaccines are supposed to be 95% effective) whose defenses it manages to get past?

A very recent study by workers at Bristol University that is awaiting its peer review suggest that covid looses its infectivity as it dries out. The study concerned particles in the air and found that at 50% RH the particles quickly dried out compared to 90% RH, as they spread, and so the effective range was decreased at low RH. I wonder if this is part of the reason why countries with persistent high RH, such as the UK and Eire experienced greater infection rates than drier ones. https://www.theguardian.com/world/2022/jan/11/covid-loses-90-of-ability-to-infect-within-five-minutes-in-air-study

Details discussed in the full article here. https://www.bbc.co.uk/news/world-us-canada-59960949

I know placebo can have sensory or psychological effects like reducing pain or anxiety or fatigue and some effects that are sort of physical like increasing heart beat rate or blood pressure, but these can be controlled by psychological factors (like being upset), is there any evidence that placebo can have effects that are entirely physical?

What are the chances of there being a human being who can't tell a lie, in any way, no matter how hard they try? If so, would they classify it as genetic or mental disorder? Then there's the situation of what advantages/disadvantages of never being able to lie. If you're trying to protect a friend's privacy (embarrassing habits or interests), not everyone will know right away to simply tell them "I'm not allowed to say.". Or even government secrets for your country from their enemies. Maybe it would allow for easier marriages between 2 people, I know that would be more likely.

I was under the impression the N95 masks are the best, but recently I heard from someone (who tends to be knowledgeable about these things, but, of course, not beyond scrutiny) that the masks with the filters/valves on them are the best. Is there any science that settles the question of which type of mask provides the best protection? There's a table giving stats for various types of masks here, but I can't really make heads or tails of these metrics, maybe someone can explain. Flow rate? Inhalation and exhalation resistance? Is more or less better? etc. EDIT: I see now that both the N95 and the european FFP2 come in valve and valveless varities. Anyone know how…

Recently there was a freedom of information request for the Japanese government to release data on the Pfizer vaccine. That request yielded bio-distribution data on the lipid nanoparticles that carry the mRNA in the body. I will post a chart which summarizes the data from the FOIA request and also the report itself (Japanese and English). My question is, looking at this bio-distribution data which shows large concentrations of the lipid nanoparticles collecting in the bone marrow and ovaries post vaccination, what long term potential side effects might be anticipated in individuals who received the Pfizer vaccine? Summary of bio-distribution of lipid nanopar…

Are you in favor of COVID-19 Mandatory vaccinations? #deltavariant Mandatory COVID vaccinations: Are they coming to a European company near you?

The Delta Variant is progressing and now infects people vaccinated in France * Will it last to the point of wondering if its evolution of the mutaion at the level of the Spike protein would be possible over the variants to make the vaccine deficient? And to spend the whole Greek alphabet there? Indeed the vaccine does not prevent it from remaining and the epidemic will not over until a natural extension of it? * The Delta variant has mainly affected people already vaccinated in the Landes nursing home Le variant Delta a touché en majorité des personnes déjà vaccinées dans l’Ehpad des Landes

I've heard so much conflicting information on this topic and it seems like there are studies to prove every position you want to take on it. The most popular view seems to be however that the standard surgical masks that people most frequently wear stop you from infecting others, but don't protect you, whereas there's some other type of mask that protects both you and other people, is this in fact what the science suggests? What kind of protection do the cloth masks provide?

https://www.sciencedaily.com/releases/2020/06/200615140921.htm Administration of a peptide that changes gut bacteria results in -40% plaque size after 10 weeks although in mice not humans. What do you think of this?

what it means to have elevated Igg A? all other immunoglobulins normal.

You often heard about how a mother being advanced in age is bad for the child she is bearing and I'm wondering, is that exclusively because it raises the risk of miscarriage or are there actually negative health effects that are passed on to the child as a result of the mother's age and what are the negative effects specifically?

I won't press this any further, thanks for the responses and the patience. Let me just ask you something unrelated to the vaccines, if we can take the thread on a very brief digression and if this is a topic you know about: This business about eliminating lipids got me thinking about something I've often wondered (and worried) about, which is mercury in fish. You'll usually hear that you SHOULD eat fish, but not more than x servings of such and such fish a week. Is that because if you don't cross a certain threshold of mercury in a given time it will get eliminated without having an effect, whereas if you go beyond that it doesn't get eliminated quick enoug…

I work from home so during this whole ordeal the world's been having with COVID, I've been blissfully and irresponsibly ignoring it, but now I've been called up to take the Pfizer vaccine, so I actually have to educate myself a bit. I've been watching this video on data from Israel about side effects associated with the Pfizer vaccine (which I'll link to at the bottom) and they mention severe side effects (but don't specify beyond that), albeit very rare. Now, I'm thinking, the vaccine has at this point been tested on a large number of people, but without long term followup, whereas the virus has been "tested" on an enormous amount of people and been given a dec…

I remember one of my doctor friend (he was hardworking ,so probably a good doctor) was saying, "ahmet, do you know ,any psychiatrist can ensure you to see hallucination via giving you a drug." I wonder here whether hallucination can occur artificially by taking drugs,is this really possible?? (I mean only "normal/natural" persons and all of them (do not have any psychiatric or any else illness in the past) under assumption) ....

Can COVID speed up medical research at least a bit? The vaccines went from phase 1 trial to approval in 1 year. Can at least some procedures be used in other fields of medicine?

Statistically speaking, How common is it for the doctor/midwife, whoever genders the baby, to misassign the person's biological sex at birth?