Is my postural alignment connected to my general health?

It is generally accepted within the scientific community that poor postural allignment does increase a person's susceptibility to musculoskeletal injury, chronic health conditions, chronic and transient pain.

It's all about how your body compensates for misalignments, shifting body weight and forcing other muscles to assist in stability.  Over time, these components will fatigue and wear down increasing the likelihood for chronic pain and other health conditions.