The most memorable version of the song "That's What Friends Are For" was sung by Dionne Warwick, Elton John, Gladys Knight and Stevie Wonder as a charity single for AIDS research and prevention.

That rendition became the No. 1 single of 1986.

For millions (probably billons) of folks, singing — and thinking — about friends creates a feel-good moment.

And more and more research is showing that the benefits go far beyond temporary joy.

In a new study published in Personal Relationships, researchers looked at data on more than 270,000 people and found that close family and friend ties were associated with better health and happiness.

Folks without a network of friends/family and buddies that they could rely on were more likely to report high blood pressure, diabetes, cancer, lung disease, and coronary heart disease, including heart attacks, angina, and congestive heart failure. They were also more prone to emotional, nervous, and psychiatric problems, as well as arthritis, rheumatism, and stroke.

The researchers also looked into a survey of 75,000 people and found that the quality of friendships matters.

Those who found that friends/family often let them down or were a source of conflict reported more chronic illness.

So tend to your relationships. Be the good friend you want others to be to you.

And lean on your friends/family/buddies for support (it turns out people like to be relied on); carve out time to make fun memories.

You won't just be having a good time; you'll be boosting your chances of a healthier, happier life.