A lot of back pain is simply due to poor posture. If you are a back pain sufferer, it is certainly worth working on your posture in the hope of improving your back problem or at least preventing things getting worse. It is well worth trying to encourage good postural habits in children from an early age as bad habits are hard to change.
The shape of your spine
Not many people have a perfectly aligned spine and there are many degrees of variation. It is important to recognise and correct a crooked spine as this can stretch or compress nerves and other spinal structures. Although you can't change the shape of the spine you were born with, improved posture and regular stretching exercises can help rebalance the situation.
Often called a 'sway back', this type of spine hollows out in the lower back. A lordotic spine is common in overweight people ( or pregnant women) because the weight around the abdomen will pull them forwards.
This is an exaggerated thoracic curve that results in s hunched back. A kyphotic back can generally be corrected with stretching and postural exercises. A dowager's hump can be caused by the weight of the head and weak muscles where the neck joins the thoracic column. This is often just a symptom of the ageing process.
This is the curvature of the spine: instead of being straight, the spine bends sideways in an 's' shape. Mild cases of scoliosis are very common and can be helped by doing stretching exercises to straighten the spine. As with a kyphotic back, extreme cases may require metal rods to be inserted on either side of the spine to keep it straight and stable to prevent nerve and other soft-tissue compression.