Osteoporosis (bone fragility) and preventive measures in premenopausal age

The purpose of this survey was to map the consumption of foods that are important sources of calcium and vitamin D, as well as meal patterns and body size among a group of cleaning staff and teachers in nutrition, health and environmental subjects. The other purpose was to map smoking and exercise habits. The cleaning staff and teachers that took part in the survey were between 30-40 years old and were drawn from the employee register in Oslo and Akershus. The survey was carried out in November and December 1994.