Answer:

hygiene

Answer	Crossword Clue
HYGIENE	Cleanliness
HYGIENE	Healthy routine
HYGIENE	Healthy regimen

HYGIENE	Health issue
HYGIENE	Health science
HYGIENE	Food-service concern
HYGIENE	High-school class
HYGIENE	Science named for Greek goddess.
HYGIENE	Good health habits
HYGIENE	It's good for your health
HYGIENE	Seinfeld obsession

HYGIENE	Sanitary practices
HYGIENE	Dental or oral follower
HYGIENE	Sanitary measures
HYGIENE	High school health topic
HYGIENE	Regular brushing, e.g.