INS and inherited lipid metabolism disorder: This was demonstrated in a previous study in Benin city, Nigeria, in which senior civil servants with a high income were compared with their junior colleagues with low incomes for the relationship between pattern of food intake and CVD risk factors.17 Subjects with high incomes were found to consume more meat and other animal fats, and to have higher BMI, blood pressures, insulin and prevalence of dyslipidaemia, compared with the junior workers.