Lack of sleep does cause your immune system to be weaker so yes.
lack of sleep
Lack of sleep because of stress in ones life could be a cause of grey hair. Anything stress related can cause gray hair.
you have to sleep for the mind to rest. If you don't your mind gets over whelmed and it will start shutting down. lack of sleep could cause health problems.
it's much more likely that the lack of sleep itself is not the cause of the suicidal thoughts, but is another symptom of depression. But, yes, lack of sleep can cause one to feel meh, and possibly simulate depression.
Lack of sleep can be the cause of many things including ulcers. They have been known to cause both gastric ulcers and mouth ulcers.
A lack of sleep makes it more likely to have a heart attack or stroke, but is not known to actually cause one.
stress,depression,lack of food, lack of water, smoking, drinking,
Yes
imo galing lolo bugo
my leg is not numb and cold. however, if your leg is numb and cold, it could be for any number of reasons. lack of circulation could be a cause. if it continues for an extended amount of time, i would recommend seeing a doctor.
I am assuming you mean "how does a lack of sleep effect your eyes?" Low levels of sleep will cause redness in the whites of the eyes and will cause you to get dark circles under the eyes.
No. I rarely sleep and I've never fainted. I guess it may be able to, but not likely.