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15h
comment Any benefit to low dose radiation?
Thanks everyone for your input so far, I'll keep investigating and looking at the links you have provided.
19h
comment Any benefit to low dose radiation?
journals.lww.com/health-physics/Abstract/1982/12000/…
19h
comment Any benefit to low dose radiation?
@Chris, the book on radiation biology I was reading said that animals exposed low doses animals were observed to have a decrease in mortality compared to those exposed with no radiation. The book is quite old so I'm not sure what recent studies suggest. The books said the cause of this phenomenon was unknown and controversial, but stated some scientists hypothesized low dose radiation could prevent some diseases occurring.
1d
comment Is excessive hydration a risk factor for cancer in humans?
@Chris, I don't mean any strict definition of "over-hydration". If a human is dehydrated, the intracellar water volume will decrease, and if a human has renal impairment leading to anuria, it is likely intracellular water volume will increase. So by overhydration I simply mean more intracellular water than otherwise, that may result from increased water intake, or decreased water excretion.
2d
comment Do larger multicellular organisms have an increased risk of mutation and thus cancer?
Would the OPs logic apply in the case of organisms from the same species? For example would larger humans have a higher risk of cancer than smaller ones?
Oct
24
comment To what extent is Ebola airborne? (aerosols)
Nice answer but I think "spreaded" isn't a word and should be just "spread".
Oct
24
comment Physiology of benign eye twitching?
Could the down-voter please comment on how the question can be improved?
Feb
27
comment Hypovolemia and orthostatic hypertension
No I meant orthostatic hypertension, which apparently can also a symptom of hypovolemia. For instance, look at the 5th cause on the list on wikipedia en.wikipedia.org/wiki/Orthostatic_hypertension.
Dec
21
comment How much influence does toxoplasmosis have on personality and intelligence?
Thanks for your answer shigeta. I find it interesting because many of the links I had seen say it lowers novelty seeking behaviour. sciencedirect.com/science/article/pii/S0301051103000759. web.natur.cuni.cz/~flegr/pdf/toxonovelty.pdf
Dec
20
comment How much influence does toxoplasmosis have on personality and intelligence?
Heaps of sources, have to go now, but i'll post later. Just search on google or google scholar in the mean time if you want to.
Dec
9
comment Under what conditions does the body burn fats, proteins and carbohydrates?
Thanks for your informative answer. Let us say someone is on a calorie deficit diet, and undergoes exercise that night. They would supposedly have low glycogen stores, and would rely on gluconeogenesis. What proportion of gluconeogenesis will be fatty acids, and what proportion will be from protein? Is this ratio always the same or is it dependent on intensity?
Oct
12
comment Would it be correct to state that any biological difference between the sexes has to be found in the Y chromosome?
...(continuing) other genes can contribute, but they can be present in both males and females, but are just expressed differently. The reason for their difference in expression is because of the differences in the sex chromosomes that ultimately regulate the other chromosomes.
Oct
12
comment Would it be correct to state that any biological difference between the sexes has to be found in the Y chromosome?
@terdon, I agree with Amory's answer. I meant if we assume that genetics is the only reason for the difference between males and females (which is the silly assumption made in the question), and considering the somatic chromosomes are selected randomly independent of gender, only the sex chromosomes can account for the difference. However, that is not to say that the sex chromosomes don't regulate the expression of other genes on other chromosomes, giving rise to gender differences. So I agree other chromosomes can contribute to gender differences.
Oct
11
comment Would it be correct to state that any biological difference between the sexes has to be found in the Y chromosome?
If it was genetic then the answer is almost certainly yes, but I would think it is more likely due to hormone differences. Ultimately hormone's are regulated by genetics, but other things can influence them as well, for example tumours, or drugs and many other environmental and epigenetic influences.
Oct
8
comment Why is weight gain a symptom of Cushing's Syndrome?
why does cortisol make you consume more food?
Oct
8
comment Why is weight gain a symptom of Cushing's Syndrome?
"So cortisol metabolizes the food and reefuels the body even when there is no requirement within the body. So because of excessive cortisol content body simply gets excessive fat accumulated in various parts which mainly results in obesity." doesn't really make sense to me, if it metabolises the food, it should lead to weight loss. Also your answer is mostly about stress, but I'm interested in cushing's syndrome.
Sep
28
comment What is the cause of the spots on this leaf?
I was just kidding
Sep
27
comment What is the cause of the spots on this leaf?
This site is not for specific medical or botany advice. Please consult your local botanist for a specific diagnosis.
Sep
26
comment Why are urban birds still scared of humans?
@IsopycnalOscillation, if they have seen humans before then their natural fear response is justified. In the city I live, I've noticed that some children are particularly cruel to birds constantly chasing them away.
Sep
26
comment Why Do Healing Wounds Feel Warmer To The Touch?
Do you think you could provide times to your answer as well (e.g. after 3 hours this happens). I'm curious as to the timeline of normal inflammation compared to the questioner's timeline of heat after 2 days.