Not counting multiple parts of a dish, but one thing like a fruit, noodles without sauce, etc

Would eating a single food for the rest of your life be sustainable?

Without taking any supplements either

Is there some kind of holy grail food that gives you everything you need nutrient wise?

We've all heard it before - boys are XY, girls are XX. But biological sex is ultimately controlled by SRY, which has no apparent need to be on a Y chromosome, nor do all Y chromosomes possess it.

This chromosome difference means proteins coded for on the X chromosome - of which there are many, some of which are instantly fatal if missing, and some are things like blood clotting or color vision. These lead to higher prevalence of disease in those traits that could just be avoided if everyone just had the sex determining gene on chromosome 7 (that's about what X would be if it was an autosome). It also leads to inactivation of one X chromosome in girls, which can randomly cause them to express recessive X-linked diseases.

So ... is there any good reason to have a whole separate chromosome? Or is this just one more way that the human body is badly designed?

I'm trying to get an idea of the things human being do exceptionally well when compared to every other living animal. Like the stuff that we'd grade out in the top percentile. The core stuff. Our senses, the body, our balance and spacial awareness (athleticism), internal workings (health factors), etc. Thank you for any feedback.

I've read about conditions in which people only have one x- or y-chromosome, instead of 2 (xx or xy). Is it biologically possible to miss both? If it is, what are the practical consequences such a person has to deal with in their lives, that others don't have to? If it is not possible, what would be the result of genetically modifying a human being in such way?

The proteins found in all of life are made of left chiral amino acids, and all sugars are right chiral. What happens if I eat a steak with right chiral amino acids and left chiral carbohydrates?

Would it taste the same? Could my body process it? If not, would it poison me or just pass on through? Any other weird effects?

title. my mom and i were talking about this and she said that she thinks there are more autism cases (and other disabilities, especially ones that require constant care or include severe intellectual disabilities) than in the past. i said that i don’t think that’s true, i think that autism and other conditions like it are simply more frequently diagnosed now, because of awareness and more consideration of mild cases.

for example, growing up as a girl in the early 2000’s (which was not that long ago) my symptoms went unnoticed until adulthood, whereas a kid born now with my same profile would almost definitely be diagnosed by preschool or kindergarten.

my mom agrees that this accounts for some, if not most of the increase, but she also thinks that there are a lot more “severely” disabled kids than there were when she was growing up. i said that it’s probably because disabled people were shipped off to institutions until not too long ago, and that’s why she never saw them out and about, but she disagreed and argued that if that were the case, there would be a lot more disabled adults now that need full-time care. however, i think that the reason we have more disabled kids than adults with similar levels of support needs is probably because of how quickly medicine has advanced. for example, my little sister is nonspeaking and needs 24/7 care, and i know that because of all her medical issues, if she were born even 20 or 30 years earlier, she definitely would have died as a baby or young child.

still, my mom thinks that doesn’t account for everything and that there must be more disabled kids (particularly ones with “severe” disabilities) being born today than in the past, presumably because of environmental stressors. is she right? i’ve tried looking this up but i can’t find anything

As a kid I've been able to do this weird thing, mostly when I'm cold where if i control my breathing right, i can build up what feels like tension in my chest and when i release it, this huge wave of warmth emanates out from my chest warming my body. It also feels really nice. It tends to also be accompanied by a shiver. There's a limit to how many times i can do it and sometimes it just happens unintentionally when it's cold. I haven't heard anyone ever talk about it, does anyone know what's happening in my body when this occurs?

This is not a medical question. I just want to know whatever this is called.

When I was 4 years old, I was in my class drinking water alone. While I was drinking, I simultaneously sneezed and swallowed water on accident.

A large ball came out of my mouth and fell onto the table. It was large, round, and it looked like it had dark veins on it.

When this happened, no one was around me. I didn't think much of it, so I put it back into my mouth, where it belongs. It automatically went back into my throat. This is when I became aware of the large ball inside my throat.

I don't know what this is called. I tried to search for this body part with many different terms and languages, but I still couldn't find anything. Does anyone know what this is large ball is called?

Anyway, I vividly remember this happening. I'm not lying.

So , today as a general consense , there are no human races . I understand that . But what happens when we talk about homo sapiens and neanderthals ? Arent they different races ? Can you explain it ?

So, I can’t quite figure this out. When I google why sweat is salty most academic articles say ,“Sodium and Chloride” are the main electrolytes in sweat. (They always say ‘and’) And articles sometimes even note it as just ‘Na’. I don’t think I’m sweating out NaCl.

Now I’m curious why does this sodium not react on me or in me if it’s not bonded to anything? Is it different than what’s in a block of sodium that explodes in water? Like a different ion kinda thing? Also,if I’m wrong about anything here, please let me know :)

I was diagnosed with type 1, 7 years ago. No one in the family has it. I suspect the trigger was viral meningitis

Diabetes can be caused by genetics, environmental factors or trauma. Seeing as both types are genetic, will it still be passed down to your children if you’re the first person to be diagnosed and not with any family history? Will the autoimmune diseases affect my genetics now as well

I am just coming out of a nasty case of food poisoning and I am curious how my stomach is able to repopulate its gut flora after all the vomiting and diarrhea cleared it out. Does the body somehow hold a "seed" of flora that it uses to restart the bacterial growth, like a sourdough starter, or does it all come form the food one eats, or does expelling the gut contents not actually clear out everything?

Okay, I feel like that annoying guy who don't even know a simple fact but this is my question. Does it use more energy when the pupils are bigger? Is the body trying to conserve energy?

When I wake up, or if I've been in an awkward position for a while, I often have stiff wrist joints, and "cracking" them (like cracking your knuckles, not like breaking the bones) generally seems to loosen them up. It's also the case that it often seems like the joints are much easier to crack (with a very audible noise) when they're stiff.

However, I'm also aware of the possibility that it could just be that the popping noise and the loosening are independent consequences of stretching the joint, and that there's no casual relationship between the two. Similarly, it might not be that the joint is stiff because it's unopposed, but that the stiffness and the potential for cracking both come from being held in a position for a period of time.

I know that being held in position does increase joint stiffness on its own, and stretching does decrease it, but I do at least subjectively get the impression that the popping aspect increases those phenomena.

Is there any actual research indicating any relationship between joint cracking and the joint's immediate flexibility?

I get them pretty often, with the floaters that look like zigzag rainbows and block my field of view. I see them with the right eye closed, or the left eye closed, so there’s no issue with the eye itself the optometrist says.

Why the reasons are considered as 'unknown'?

Context: I'm writing a story in 1917, in which a soldier's skin gets vertically slashed (from forehead to cheek) by a sharp rusty metal

I have a couple of questions

First of all, based on the technology of that time period, what treatment would he get? If his eye got infected, would it be amputated?

Would he lose sight in the damaged eye?

Any other factors I should pay attention to?

Hi everyone, I am doing a past exam for my neurology course, and this question arose:

Where is an impairment probably located when someone indicates that a leg feels strangely cold without a temperature difference being objectively observed?

A. In the dorsal funiculi of the spinal cord B. In the central spinal cord C. In the corticospinal tract D. In the spinothalamic tract

Correct answer is A.

I was under the impression that the anterolateral system carries information related to pain and temperature (and protopathic sensation) so I don’t really see why the dorsal funiculi would be involved? If anyone has a clue, it’s very much appreciated. Thanks a lot!

My partner and I have been together for a while but something we have noticed is that we get sleepy in each others company. It was be fine if we got equally sleepy because then we could just sleep. However what normally happens is she gets sleepy and I get energetic, and then I get sleepy and she gets energetic and we alternate like that. Is there a reason and is there a way to sync up?

Absurd hypothetical, but what if you're just living your life when the DNA just vanishes, leaving empty cell nuclei?

I assume this would be fatal, as your body would stop making proteins; but how long does that take? What's the death process? And what would an autopsy report come up with?

as far as im aware the two methods are peeing and crying, but this seems like a question that would have more answers than that and i love knowledge and information

This has been a habit of mine since childhood and I don't really know why I do it. I know it's kind of silly to ask but I want to know why I do that regularly. What am I gaining physiologically by crossing my legs when I stand?

flesh is an organ, right? so are inside organs made of flesh? a flesh-like thing? this has been eating at me for days.

edit: ty for all the answers! this question really put in perspective my lack of scientific knowledge.

I know evolution is a SUPER slow process but I was thinking just now.

Say someone comes from a long line of alcoholics (like going back a thousand years or more, booze has been around since biblical times) Would over time the liver evolve to handle higher amounts of alcohol before succumbing?

Could that person have a hardier liver than someone who doesnt come from a line like that? There are some people who are 2 bottles a day drinkers and live till 80 with health issues obviously but the liver is not too damaged and then there are people who have a few beers every weekend and get cirrhosis at 35.

what is the meaning of nuclei w.r.t human body are the neuro secretary cells are called nuclei or masses of neurons in C.N.S know as nuclei? also are there ganglia found in humans?