The focus on prevention in the health services is on the increase lately. While nutrition as a preventive healthbehaviourhas also gained popularity as the health sector is trying to identify the causes of some of the diseases that plague the society. This study then examined the extent at which people are really committed to their nutrition as a preventive measure for diseases, the role of personality and health status on commitment to nutrition. Four hundred and sixty one (461) individuals

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... involved in the study comprising of one hundred and ninety (190) males and two hundred and seventy one (271) females, This include one hundred and forty nine (149) healthy and three hundred and twelve (312) ambulatory patients drawn from University College Hospital Ibadan and University of Ado-Ekiti, both in Nigeria. Big Five Personality Inventory was employed to measure personality characteristics while Dietary Health Scale measured commitment to dietary health behaviour. The results showed that only conscientiousness and neuroticism has significant influence on commitment to nutrition, no significant difference between the commitment of male and female, and married were found to be more committed than singles while healthy individuals were also found to be more committed to nutrition than the ambulatories.