Having body fat contributes to having a menstrual cycle. If a woman loses too much body fat, she can stop having her menstrual cycle because you need a certain amount for it to be able to function as normal. I don't think the body would benefit from ceasing to menstruate, because at that point it isn't really healthy. However, usually if a woman gains back some of the body fat or starts eating fattier foots/exercising less, her period will start again.
The shingles virus is a reactivation of the chicken pox virus.
Just like in any other occupation, effective communication is important in order to do your job properly and efficiently. It is vital that nurses can communicate effectively so that they can successfully deal with any concerns that could save a patient from harm.
This is a statement not a question