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Questions tagged [stress]

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2
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0answers
39 views

Are there five common fear responses in animals?

It's been claimed on psy SE that are five common fear responses Fight, Flight, Freeze, Fawn, and Faint (or maybe fright, flight, fight, freeze, fawn as in a post further linked from there). To me ...
2
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0answers
44 views

Is homocysteine converted to glutathione during oxidative stress?

From the paper titled "The basis for folinic acid treatment in neuro-psychiatric disorders" by Ramaekers et al., 2016: On the left side of the figure, the purine metabolite GTP serves as the ...
20
votes
3answers
522 views

Why is the heart adversely impacted by chronic psychological stress, yet it benefits from routine physical exercise?

Chronic psychological stress is commonly said to be deleterious to the heart, and predispose one to cardiovascular disease. Yet the opposite is said about regular aerobic exercise. Physiologically, ...
4
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1answer
44 views

Can insects or mosquitoes be astonished(shocked)?

Can insects like mosquitoes get astonished by sudden happenings? Background I missed hitting a mosquito on a wall with great force. However even though I missed hitting it, it was dead. So I wonder ...
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0answers
23 views

Cortisol and inflammation [closed]

Cortisol is released under stressful condition. It is known to have anti-inflammatory role. In fact it is used as potent anti-inflammatory drug also. Though stressful conditions are unwanted and ...
3
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0answers
831 views

Why do hand/fore-arm muscles “lock up” after very high-powered effort?

Inspired from Why does it hurt the next day after doing significant exercise? with its excellent answer: In climbing, you can put tremendous load on the hand/fore-arm muscles (specifically, flexor ...
0
votes
1answer
208 views

Hair becoming white in one night after tremendous stress

You have surely heard about soldiers during the war whose hair became white in one night due to the tremendous stress. I was wondering how is this possible biologically ?
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0answers
39 views

Measuring, using and analyzing skin resistance in kohms

What are ballpark ranges of skin resistance in Kohms for average men and their significance (for example 500-1000s = stressed vs 1000+ = fairly relaxed) What do various skin resistances in kohms say ...
2
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0answers
111 views

Epigenetics and serotonin?

In this article http://www.nature.com/neuro/journal/v17/n9/full/nn.3778.html it states that Increased promoter methylation of the serotonin transporter gene predicted increased threat related ...
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1answer
263 views

Does exercise really reduce stress in the biological meaning?

It is a very widespread claim, that movement in general helps body to get out stress hormones. It is used as a warning for long sitting at the computer and I also heard it as a pro-vegan argument (We ...
2
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0answers
60 views

Can ' functional' stress 'forced upon' a cell actually cause cell mutations when they divide and reproduce?

If a group of cells are forced to go beyond their regular biological parameters that they should be under given ' healthy' functioning and while existing in these stressed states some of the cells ...
4
votes
1answer
185 views

What is the impact of stress on the human body?

Can stress trigger any changes in the human body? I'd like to know more about things less commonly known than, for example: sweating and tiredness. What are the long term risks of chronic stress? Do ...
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0answers
35 views

Why sudden stresses cause stuttering and/or other impairs in children?

The question is simple: Why sudden stresses cause stuttering and/or other temporary or permanent impairs in children (and even adults)?