It has been determined that backache syndrome is caused by (a) physical inactivity, (b) poor postural habits and body mechanics, (c) excessive body weight, and/or (d)

It has been determined that backache syndrome is caused mainly by physical inactivity. For example, employees working whole day in the office sitting down will experience back aches. To prevent back aches, exercise at least twice a day, one in the morning and another in the afternoon. 

Anxiety, stress, or something like that

Carbohydrates,fats and proteins