Posture is an indicator of overall health and well-being. Abnormal posture can lead to issues like headaches, back pain, and early arthritis as it causes misalignment of the spine. Through posture screenings, postural abnormalities can be identified and corrected early through techniques like chiropractic care to prevent further health problems. The document recommends checking posture as early as possible in both children and adults to address issues before they become more serious.