Most of us underestimate the power of checking in on our friends, study finds

Sending a quick "hello" to friends is more impactful than we realize.

Good friends fill your years with joy and may add years to your life.

Loneliness and isolation can have serious health effects—but being proactive goes a long way.

Staying connected to friends and family offers huge benefits—for mind and body.

Learn how being lonely can influence your physical and emotional and well-being.

Helping others can add years to your life. Here are kind acts to perform today.