The stress of losing one's hair, or the stress that is the cause of hair loss, might be a cause of depressive symptoms men and women report in the above studies. Research will continue into all of these areas, because they are important to the mental well-being of those affected. In the meantime, look around.
Arson is a crime of intentionally, deliberately and maliciously setting fire to buildings, wildland areas, abandoned homes, vehicles or other property with the intent to cause damage. It may be distinguished from other causes such as spontaneous combustion, accidental fires (smoking in bed, e.g.) and natural wildfires.
If a fire is not the result of an accident, it must have been deliberately-lit; arson. The motives to commit arson include vandalism, fraud, revenge, sabotage and pyromania. A major objective in any suspected case of arson would be to search for, locate, sample and analyse residual accelerants.