A strong belief in the Protestant Work Ethic might underpin the decision-making of many people choosing 'natural' approaches to healthcare, new research suggests. Academics say their paper identifies the role of psychological factors in health choices ranging from a preference for vaginal birth -- over caesarean sections -- to 'natural' cold and flu remedies. In the latter case, the preference holds even if the chemical composition of natural remedies may be identical to compounds synthesised in the laboratory.