This is a common component, along with head-forward postures, of what’s called an upper thoracic kyphosis. The upper part of the back, and the shoulders and neck, become bent forward and over. In advanced stages, as with some elders, the condition has become so chronic it becomes impossible to straighten up.
Strain on the neck and upper back, discomfort, compression of the anterior chest and lungs, shortening of the anterior cervical muscles, and medially rotated upper humerus (bone in the upper arm that articulates at the shoulder) are some of the results.
Early awareness and proaction can prevent this. Be aware of your posture---if you find your head is out in front of the center of gravity of your body, gently bring it back. If you spend lots of time on a computer, take frequent breaks to stretch, bring your shoulders back, roll and drop them to release tension.
An excellent stretch that counteracts development of this condition is simple and easy. Find and face into a corner, place your hands on the wall, keep your head up, and lean in. The stretch to the front of your chest and shoulders feels great! Change the height of your hands, and notice how you feel the stretch in different parts of your upper body.
Sometimes this stretch is advised in a doorway, but I caution that it’s better to do it in a corner. You will be much less likely to lose your balance and overstretch.
Appropriate chiropractic adjustments help prevent the condition, as well. As an Activator doctor, I have precise, comfortable protocols for aligning and balancing the upper body.