Teeth falling out
Where there is no grinding, the usual reading is exposure: teeth are what you show when you speak or smile, so losing them maps onto fear of humiliation, ageing, or saying something you cannot take back.
Dreams about the body
Pregnancy
A project, an idea or a change in gestation. The stage in the dream often matches how far along the real thing is.
Blood
Read as life force and what is draining it. Blood connected to family imagery often points at inherited patterns.
Hair
Cutting hair is read as deliberate change of identity; losing it as change imposed from outside.