The microdose problem and the most commonly used metals

On the basis of recent research a relationship may exist between microexposure to metals and certain diseases (e.g. neurological and cardiovascular diseases) which occur in the later stages of life. This fact must be kept firmly in mind in view of the implications for the quality of health, considering the increase in average life expectancy. Moreover, it will be necessary to re-identify the critical organ for each metal, bearing in mind that the effects are altered in low level exposure conditions.