Biological Energy Redistribution?

spidergoat said:
Elephants, rhinos, and naked mole rats also don't have fur. And natives of Africa don't generally wear much clothing.
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We may need to go into their full history of evolution. Living on hoter region and thick skin may be the reason of that, they didn't needed fur to warm them.
 
KUMAR5 said:
I shall not be surprised if losing fur is also related to abnormally using more mental power than physical. Mental power had only invented clothes and their usage, specific only to humans. :)
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That is interesting observation. As far as I know, every living thing tries to conserve energy and growing hair, especially thick fur is most likely energy intensive.

In very cold climates a thick fur is the greatest energy conservation aspect and naturally occurs in cold climates more often than in warm climates, where conservation of warmth is not only not necessary, but may increase the need for energy resourches to keep the body cool and at optimum functional temperature.

Interestingly, all "cold-blooded" organisms are hairless in order to maximize the body's exposure to the warmth of the sun.
 
Write4U said:
That is interesting observation. As far as I know, every living thing tries to conserve energy and growing hair, especially thick fur is most likely energy intensive.

In very cold climates a thick fur is the greatest energy conservation aspect and naturally occurs in cold climates more often than in warm climates, where conservation of warmth is not only not necessary, but may increase the need for energy resourches to keep the body cool and at optimum functional temperature.

Interestingly, all "cold-blooded" organisms are hairless in order to maximize the body's exposure to the warmth of the sun.
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Quite interesting. Thanks. We may also need to relate energy conservation and energy expenditure with the possibility of energy distribution in between physical and mental.I think, it is just related to fats.
 
KUMAR5 said:
Quite interesting. Thanks. We may also need to relate energy conservation and energy expenditure with the possibility of energy distribution in between physical and mental.I think, it is just related to fats.
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I little humorous insert, that reminds me of a little joke.

"balding" is a sign of great thinkers or great lovers. Of course there are those who just think they are great lovers.....:)
 
Write4U said:
I little humorous insert, that reminds me of a little joke.

"balding" is a sign of great thinkers or great lovers. Of course there are those who just think they are great lovers.....:)
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Quite humourous but probably may hold some relevant logic. :)
 
spidergoat said:
We mostly only need clothes away from the tropics, where we evolved.
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But most of humans in all climate do wear clothes. Most have also lost fur. So we can relate losing fur due to wearing clothes. In cold climate clothes compensate fur and in warm areas fur is odd.
 
KUMAR5 said:
But most of humans in all climate do wear clothes. Most have also lost fur. So we can relate losing fur due to wearing clothes. In cold climate clothes compensate fur and in warm areas fur is odd.
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No sir. All humans are relatively hairless, and our present form was already established before migration out of Africa. Hairlessness is therefore a result of the needs of a tropical ape that sweats to control overheating. Clothes are a cultural adaptation to cold climates.
 
spidergoat said:
No sir. All humans are relatively hairless, and our present form was already established before migration out of Africa. Hairlessness is therefore a result of the needs of a tropical ape that sweats to control overheating. Clothes are a cultural adaptation to cold climates.
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Does it mean, there is no evolutionary impact on us due to cold climate?
 
KUMAR5 said:
Does it mean, there is no evolutionary impact on us due to cold climate?
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?? No. We have the same adaptations to cold that most mammals have - vasoconstriction (which is very useful) shivering (useful) horripilation (which is no longer useful for us) and tropisms for warmth. These came about due to evolution over hundreds of millions of years, and none are unique to humans.
 
KUMAR5 said:
Does it mean, there is no evolutionary impact on us due to cold climate?
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Innuit people of far northern N. America are better adapted to the cold. And to a primarily meat and blubber diet. But it's not that we don't adapt, just that your timeline is wrong.
 
I think it can be said that humans are capable of growing body hair. Thus it is in our DNA.

And as our ancestry were tree-dwellers and from necessity had to have a protective thick, hairy skin, it seems that hairlessness is a result of unused or evolved DNA, which would suggest an evolutionary adjustment to becoming a ground -dweller in warmer climates where the ability to grow fur to preserve skin moisture has evolved to sweat glands , cells which I understand have many similarities to the original hair growth cells.
Skin appendages such as hair follicles, mammary glands and sweat glands develop during embryonic life through a series of interactions between surface epithelial cells and underlying mesenchymal cells. In each case, these events are regulated by similar sets of conserved cell-cell signaling pathways. These observations suggest that diverse appendages may have evolved from a common precursor. Most evidence from evolutionary studies suggests that this precursor was a simple glandular structure whose initial function was to prevent organismal dehydration and permit greater independence from an aquatic environment.
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https://carta.anthropogeny.org/even...nds-and-sweat-glands-humans-and-other-mammals
 
origin said:
Just for fun since we are speculating, there is a theory that we evolved to run down animals. We are really good at running long distances compared to most game animals. The big advantage we have in long distances, is that we don't over heat.
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Yep. I've heard this before. Humans aren't fast runners, but they have astonishing endurance chasing down prey.
 
billvon said:
?? No. We have the same adaptations to cold that most mammals have - vasoconstriction (which is very useful) shivering (useful) horripilation (which is no longer useful for us) and tropisms for warmth. These came about due to evolution over hundreds of millions of years, and none are unique to humans.
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We were discussing about no fur adaptation in humans.
Why we have not adapted fur due to cold climate which other animals had adopted?
 
spidergoat said:
Innuit people of far northern N. America are better adapted to the cold. And to a primarily meat and blubber diet. But it's not that we don't adapt, just that your timeline is wrong.
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We were discussing about climatic impact on our losing fur. Both warm and cold climate should be accounted for it not just warm climate.
billvon said:
You asked "Does that mean that there is no evolutionary impact on us due to cold climates?" Answer - no.

Because we wear clothing when we get cold.
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That was continuing post. Quoted poster had somewhat indicated, we are evolved without fur due to living in warm climate of Africa at our Ape state.
Wearing cloth environment persisted constantly since long back. This is also unique to humans. Why it can not be an evolved reason to losing our fur?
 
spidergoat said:
Innuit people of far northern N. America are better adapted to the cold. And to a primarily meat and blubber diet. But it's not that we don't adapt, just that your timeline is wrong.
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Sorry, in your earlier post, ape related, you gave an impression that our primate apes were evolved without fur due to warmer climate environment of Africa and we shifited tovother climatic regions later. It suggest we are evolved due to warmer climate not cold one. How,?
 
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