- Background: Vitamin B12 deficiency can occur in individuals with dietary patterns that exclude animal foods and patients who are unable to absorb vitamin B12 in food. Material and Method: Our clinic serves a high-income population living in Southern Israel. We hypothesize that a tendency to decrease of level of vitamin B12 in our population is caused by a premeditated decrease in consumption of animal products. We analyzed 512 medical histories of patients undergoing blood tests for vitamin B12 level for various reasons. Result: The level of vitamin B12 in 192 patients (37.5%) was less than 250 pg/ml. Conclusion: As a result of media information disseminating the relationship between meat, cholesterol and cardiovascular diseases, consumption of meat, particularly beef, has decreased. Changes in life style among segments of the population with high socioeconomic level, on one hand, and the existence of poverty, on the other, are two main factors in the decreasing consumption of animal products. This causes a decrease in the level of vitamin B12 in the general population, and as a consequence, this will increase pathology due to vitamin B12 deficiency. In lieu of these possible developments and in order to prevent serious health problems, vitamin B12 fortification should be seriously considered and discussed.