Vitamin B12, folic acid and haematological status in elderly Thais.

Serum vitamin B12, folic acid and haematological data from 147 elderly people (55 males and 92 females) who visited the special clinic for the elderly at Rajvithi Hospital, Bangkok between July and November 1989 were investigated. The individuals studied came from a health-conscious group of the middle socio-economic class in Bangkok. All of them were fairly well except for minor ailments and typical diseases of elderly people such as hypertension, mild to moderate degree coronary heart diseases and non-insulin dependent diabetes mellitus. There was a statistically significant difference in haemoglobin concentrations between males and females. According to the standard haemoglobin cut-off point values of 13 g/dl for males and 12 g/dl for females, anaemia was detected in 22 (15%) of the 147 subjects. The percentage of folic acid deficiency was found to be 20.6 per cent (30 of the 147 cases). Vitamin B12 insufficiency was found in only 6.9 per cent (10 of the 147 cases). No statistically significant correlation between haemoglobin, folic acid and vitamin B12 was found. However, when the data were grouped according to different intervals of increasing haemoglobin concentrations, for females there was a tendency for serum vitamin B12 to decrease, and serum folic acid to increase in both males and females. The results of this study suggest that folate deficiency may play a role in the occurrence of anaemia in elderly people, and therefore, dietary counselling and supplementation of folic acid are recommended.