In chronic low back pain low level laser therapy combined with exercise is more beneficial than exercise alone in the long term.

We observed a high prevalence of self-reported musculoskeletal symptoms at a number of body sites, which were associated with psychosocial factors and specifically stress as defined by the QPS Nordic 34+ Questionnaire.

Background: Noise is the most common hazardous agent at workplaces. Noise induced hearing loss (NIHL) has been known since the industrial revolution. Although NIHL is permanent, irreversible and frequent, it is preventable. The economic costs of NIHL have been estimated to be about billions of dollars. Besides, cigarette smoking is a common habit worldwide, and according to some recent studies smoking and noise may act in common causal pathways for hearing loss.