Abstract
Concentration of cadmium in blood in an elderly population with a mean age of 87 years was studied in relation to age, blood pressure, BMI, cognitive function, gender and smoking. This population-based study consisted of 804 subjects both men and women. Clinical examination included medical and social history, physical and neurologic examination, and assessment of cognitive functions with Mini-Mental State Examination (MMSE). Information on prescription and non-prescription drug use was collected. Anti-hypertensive drugs included all medicines potentially used for treating high blood pressure. Blood pressure was measured. Whole blood from 763 subjects was analysed for cadmium by atomic absorption spectrophotometry (GFAAS) with Zeeman background correction and with a graphite furnace using the L'vov platform technique including quality control. Differences in cadmium concentrations were related to non-smokers (3.9 nmol/l), previous smokers (4.4 nmol/l) and current smokers (7.5 nmol/l). There were no relations between cadmium and age, blood pressure or cognitive functions. In conclusion, increased cadmium levels were found in smokers. A possible contribution from previous occupational exposure needs to be further evaluated.
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