Is it worth it?

My research paper is about shift workers. I want to discuss the psychological effects it has on a person as well as the mental and physical result it has on someone. From just seeing my father work as a cop for sixteen years, he developed insomnia. He has such a hard time falling asleep, and when he finally does fall asleep it's not for long. When he switched to shift work in a plant he got to where he didn't even know what day of the week it was. He would get used to working nights then when he was off he would be on that time schedule so it just made him more exhausting for him. To me shift working shouldn't be an option. Whether you work strictly nights or strictly days, not both. The longer a person does this I've noticed in my research that they are more likely to have more health problems. There immune system always seems to get lower and lower the longer someone lets shift working effect there body. My girlfriend works seventeen hour days twice a week and those two days are hell. After being off for so many days and going straight to work days like that are really hard on her body. She tends to feel super sick at the beginning of the week and just wants to sleep then by the end of the week she is feeling better but it's time to work again. After reading a lot of different articles it has gone to show that women is more likely to developed a form of cancer due to shift working more than a man would. We were introduced to a women in the movie that did the shopping commercials at night for many years. She was diagnosed with cancer and going through her treatments for that, but no longer works the hours she does. It also read that the toll it has on a persons body is so harsh! It ages someone very quickly, and makes someone's moods crazy. There is so much information on this, that instead of continuing this research, I think people need to start looking for ways to limit these problems. Come up with alternative ways to get stuff done. I can say so much about the problems it's caused just not so much on ways of fixing things. I plan to talk about different experiments formed to see what shift working does to the body and try and find more ways to help them. Hopefully doing all this research I can give my dad and girlfriend some pointers on how to take care of there bodies so they don't develop anymore difficulties with themselves!