Stress can cause all kind of physical problems in our bodies, and if you surround yourself with the wrong kind of people, they can add to it. You can even create a way of life centered around stress, called Episodic Acute Stress. This type works to create a "life of relative chaos" all the time. You`ve probably seen this in friends who are difficult to be around, who make it all about them, or who are just too forgetful and wrapped up in themselves to be a good friend. The affects of stress over time can harm your body, and increase your risk of everything from depression and heart disease to obesity and diabetes.
Good friends, however, help protect you from these harmful physical effects. Your body will deal with the ups and downs of life better with friends in place to support you and give you an emotional lift when you need it.