I have pointed to all the dangers of not getting enough sleep, but I was surprised to find that some study in the past had pointed to an association between disrupted or lack of sleep and cancer risk. How they discovered this, I have no idea. But the fact that there was a link between working late night hours (or night shifts), which causes the disrupted sleep pattern, and the risk of cancer has now led to Denmark compensating women who worked night shifts and developed cancer. Of course, only those women who demonstrat that the cancer was caused by working night shifts and no other causes are the ones getting the compensation.
There is a theory that melatonin, which is produced by the brain in response to sunlight, has some protection against cancer. For those working night shifts, the production of melatonin is suppressed, which makes them vulnerable to developing cancer. So far, it appears that the women being compensated are those who developed breast cancer. It is still unclear, however, what role melatonin plays in breast cancer protection.
So, in addition to getting adequate sleep, now we must ensure that we sleep at the right time. Which means that those in financial hardships may have to give up their night jobs if they have to protect their health. For, if they are not healthy, they cannot work.