The age-related changes to the back that are the primary cause of spinal stenosis cannot be fully prevented. However, people can take various steps to keep their spine and joints healthy for as long as possible. These include:

• Regular exercise. A combination of aerobic activities, weight training and stretching can help maintain strength and flexibility in the spine, joints and ligaments. Stronger abdominal muscles and limbs take stress off of the back. People are generally advised to aim for at least 30 minutes of moderate exercise on most days. However, a person should consult a physician before starting an exercise program.
  
  
• Proper body mechanics. Good posture and ergonomics can relieve the pressure on the back. When standing, maintain the pelvis in a neutral position. When lifting heavy objects, bend at the knees and hips and keep the back straight. Hold objects close to the body while carrying them.
  
  When sitting, choose a seat with good lower back support, arm rests and a swivel base. A rolled-up towel or pillow in the small of the back can help maintain the spine’s normal curve. Keep knees and hips level. Also, sleep on a medium-firm mattress. Recent studies indicate that sleeping on such a mattress is better for the back than sleeping on a firm mattress. Pillows can also offer good support, but only if they do not force the neck up at a severe angle.
  
  
• Maintain a healthy weight. Excessive weight puts additional stress on the joints and bones.