The addictive gene runs in my family, so I try to stay away from anything that could cause addiction. I guess essentially we could become addicted to anything.
I have had times of being caught up in playing pokemon on my Game Boy Color as a kid. I also can let food get out of hand and over consume when I am stressed. I can also get caught up in my health, figuring out what is wrong (newly wrong) or new treatments for what I have.