Question

what are good subtopics for an essay on gender differences in depression
Ms. Sue
What is your thesis statement? Your topics and subtopics should be strong supporting arguments for your thesis.

letmewatchthis
Why are there gender differences in vulnerability to depression?
Ms. Sue
A thesis statement is a statement, not a question.

Study this site for how to write effective thesis statements.

http://leo.stcloudstate.edu/acadwrite/thesistatement.html