You bet it can and does cause really serious stuff like, Cancer, Tumors on the Brain, it buggers up your nervous system. All the things you don't want going wrong with your body if you want to live a long, healthy and happy life.
Maybe
Stress?
Crying eases emotional stress which sometimes helps.
You may become sick or suffer emotional stress.
Yes. Stress can cause all types of physical symptoms including the one's listed in the question.
you will start to feel drowsy and sick so take it easy and slow
It may be sick or stressed out. If it sheds then that might cause stress
Yes, being sick can affect your menstrual cycle by making your period late. Stress, whether good or bad, can have the same effect.
When tiger fish get sick, they may change color to appear darker or faded. This change in color can indicate stress or illness in these fish.
Of course not! Unless you are overly sensative to stress and someone stresses you out over the phone.
It is generally not recommended to take creatine when sick, as it may put additional stress on the body and could potentially worsen symptoms. It is best to consult with a healthcare provider before taking any supplements while sick.
Stress can and so can having the flu or getting sick.