We have dozens of indian casinos in our area. When I was still working as a fire lieutenant we had one half a mile from the station. We went there frequently for elderly people who had been there all day playing the penny machines who had forgotten to drink enough fluids and passed out or got sick from being dehydrated.
In the beginning my first thought was that they were drunk old people when that wasn’t the case we would think that they were such compulsive gamblers who were so obsessed that they forgot to eat and drink. When my wife told me what her friend was doing with her mother it all made more sense. I confirmed this with the casino staff and they sincerely started making an effort to make sure that their elderly regulars were staying hydrated. After that the number of these calls dropped off dramatically.
The same thing can happen with younger people and video games. Modern slot machines are simply a variant on video games. It’s amazing how video games can be so absorbing that people forget to eat or drink.