Are you kidding! Death on cruise ships is pretty natural because many of the cruisers are elderly. No different that dying in one's sleep at home.
As for suicides, that happens everyday on land. Some kids bullied at school and on facebook end their lives by suicide. Furthermore, according to the US Dept. of Justice, 60% of adult firearm deaths are by suicide.
People do not fall off cruise ships. They intentionally jump. I am 5' 11" tall. The rails come to my chest.
Some of you may remember that about 4 years ago, a grandfather dropped his toddler grand-daughter out of a window on a docked ship in Puerto Rico. He and the parents tried to blame Royal Caribbean. The police investigation and court found that he was at fault for negligent homicide. Why? He picked her up and held her out a window and she slipped out of his hands.
Luckily, they are video cameras all over the public areas of ships.
It's misinformation that a passenger fall/fell off a ship. Nope, they intentionally went overboard. But the media has to put it that way to get more clicks and sell more adverts.