Actually, it all depends on the context. Let's look at elderly women, for instance. It depends on whether they live alone in their home or in a retirement home surrounded by many people.
When people live alone in their home and have few family members close by, they are very likely to be victims of neglect. Those people don't necessarily always take care of themselves. Health and social services are unable to help all those in need of assistance.
Those isolated people are also often victims of financial abuse, such as telemarketing or door-to-door sales schemes. Since they are alone and have few people to talk to, they tend to open up and trust people more quickly. They may invite people to come in or may talk to them on the phone. They may also provide personal information they would normally not share.
If we are talking about people living in a retirement home....