<human>:  What are the symptoms of addiction?
<bot>: The symptoms of addiction can vary between individuals, but some common physical, psychological and behavioral signs include: cravings for the substance; increased tolerance and continued use despite negative consequences; difficulty cutting down or controlling use; experiencing withdrawal symptoms when not using; neglecting hobbies and responsibilities; mood swings; changes in sleeping and eating patterns; spending an excessive amount of time and energy trying to acquire the substance; and changes in relationships with family and friends.