Islam is an Arabic word that means peace and full submission to God, the one and only one God. Islam in its universal meaning is the God call through his prophets (including Noah, Abraham, Moses,...
Then it is going to have to be a total stranger which has lots of risk involved. There is almost certainly someone you know or have contact with who wants the same thing. It's not that uncommon....
Macrophages are a necessary part of the immune system, so a person who did not have any would suffer from severe immune deficiency and would succumb to opportunistic infection very readily.