TASK DEFINITION: You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.
PROBLEM: Category: "Y"? 
Clue: You can split the atom or even do barrel rolls using this toy

SOLUTION: a yo-yo

PROBLEM: Category: EATING IN AMERICA 
Clue: Since overeating was a status symbol, early rulers of what's now this state often weighed over 400 lbs.

SOLUTION: hawaii

PROBLEM: Category: HEALTH & MEDICINE 
Clue: Former Texas governor Ann Richards still campaigns, but now it's against this debilitating bone disease

SOLUTION:
osteoporosis