This must be read in the backdrop that most of the diseases occur not due to external factors alone, but also due to the deficiency of nutrients in the body. The damage could be more severe in small children or those in their growing phases, in which case, the lack of nutrients could invariably lead to stunted growth, physical and mental deformities, and other incurable illnesses such as goiter and rickets.
Hence one must take care to see that his/her and one's own families nutrition plans are well chartered - preferably by an expert nutritionist - such that every vital nutrient required for the body is correctly supplemented through the various victuals. Internet is a good resource where one could find more information about nutrition plans and their importance in ensuring a healthy body. Browse the web and read the expert opinions on nutrition plans, in the process empowering oneself automatically. After all, we all agree that knowledge is power!