If these Americans scare you, it might be time to reprioritize your life.

As people get older, social isolation and loneliness become serious problems. Many find themselves living alone for the first time after the death of a spouse. It's also difficult for older people to maintain friendships when people they've known for years become ill or pass away.

Census Bureau figures say that almost a quarter of men and nearly 46% of women over the age of 75 live alone.

But loneliness doesn't just affect those who reside by themselves. People can feel lonely when there is a discrepancy between their desired and actual relationships. To put it simply, when it comes to having a healthy social life, quality is just as important as quantity.