Why do people have strange dreams?

I doubt it cause that would not be normal for people do dream strange things before they die.

Some do, sometimes that person does not dream anything, but people around them do. Sometimes because of these dreams people get close to dying but do not diebecause something interferes, sometimes it can be prayers etc. I am not saying they did a study about it or anything but I haveve heard it happen to close relatives and friends so many times.

Yes, it seem likely that they do. We can not ask people who have actually died, whether they had any strange dreams just before dying, but we can ask people who came close to death and survived. Well-known dreams or hallucinations in these circumstances are often called "near-death experiences" or "out-of-body experiences". These are often so vividly real that the Survivor really believes that he or she experienced them.

Researchers have found similar experiences occur in patients with low blood sugar, oxygen deprivation, reduced blood flow or temporal-lobe epilepsy, even when death was not imminent. Another common factor that leads to "near-death experiences" can be the belief that one is dying.

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note:

It seems self-evident that people dream strange things before they die; people dream strange things all the time. The challenge is to find a dream that makes perfect sense and that doesn't contain any strangeness at all. Human beings are psychologically well defended (in the sense of ego defense) and those among us who are not in possession of healthy ego defenses are usually mentally and behaviorally ill. Very few people get to have a "dry run" at death before the actual plunge, and most people would admit that the prospect of experiencing it is a cause for a little concern. That concern increases in frequency and intensity as we know that death is getting closer. We even pick up the subtlest things from the body language and vocal tone of friends, family and physicians. Some of these things help to inform us about approaching death, and help some of us to come to acceptance. Our egos seek Wordlessly to make sense out of these later-life experiences, and our dreams can serve as a back-drop for some of this ego-defensive work. The dreaming process shuts down our waking inhibitions and logic processes, and some of the things that are on our minds can have free reign for a while; the mind processes in a new and often delightful way. In fact dreams sometimes offer to the dreamer a kind of peaceful resolution-- resolution that we didn't know we needed, to conflicts that we couldn't have put into Words.