Topics: Does Nyquil have alcohol in it?
The term behavioral addiction correctly refers to a compulsion to engage in a natural reward – which is a behavior that is inherently rewarding (i.e., desirable or appealing) – despite adverse consequences.    Preclinical evidence has demonstrated that marked increases in the expression of ΔFosB through repetitive and excessive exposure to a natural reward induces the same behavioral effects and neuroplasticity as occurs in a drug addiction.    
Reviews of preclinical studies indicate that long-term frequent and excessive consumption of high fat or sugar foods can produce an addiction ( food addiction ).  
There are a range of genetic and environmental risk factors for developing an addiction that vary across the population.   Roughly half of an individual's risk for developing an addiction is derived from genetics, while the other half is derived from the environment.  However, even in individuals with a relatively low genetic loading, exposure to sufficiently high doses of an addictive drug for a long period of time (e.g., weeks–months) can result in an addiction.  In other words, anyone can become an addict under the right circumstances.