Complex sentence: Addiction is defined as the continued use of a mood altering substance or behaviour despite adverse consequences (1) This can include, but is not limited to alcohol abuse, drug abuse, exercise abuse, and gambling.
Split into simpler sentences: Addiction is defined as the continued use of a mood altering substance or behaviour despite adverse consequences. Disease-a-Month, 54 (10), 696-721 This can include, but is not limited to alcohol abuse, drug abuse, exercise abuse, and gambling.