It is known that deficiencies of micronutrients due toinfections increase morbidity and mortality.This phenomenondepicts itself conspicuously in developing countries.Deficiencies of iron,vitamins A,E,C,B12,etc are widelyprevalent among populations living in the third worldcountries.Helicobacter pylori(H pylori)infection has a highprevalence throughout the world.Deficiencies of severalmicronutrients due to H pylori infection may be concomitantlypresent and vary from subtle sub-clinical states to severeclinical disorders.These essential trace elements/micronutrients are involved in host defense mechanisms,maintaining epithelial cell integrity,glycoprotein synthesis,transport mechanisms,myocardial contractility,braindevelopment,cholesterol and glucose metabolism.In thispaper H pylori infection in associaed with various micronutrientsdeficiencies is briefly reviewed. It is known that deficiencies of micronutrients due to infections increase morbidity and mortality.This phenomenondepicts itself conspicuously in developing countries. Deficiencies of iron, vitamins A, E, C, B12, etc are widelyprevalent among populations living in the third world countries .Helicobacter pylori (H pylori) infection has a highprevalence throughout the world. Deficiencies of several micronutrients due to H pylori infection may be concomitantly present and vary from subtle sub-clinical states to severeclinical disorders. These essential trace elements / micronutrients are involved in host defense mechanisms, maintaining epithelial cell integrity , glycoprotein synthesis, transport mechanisms, myocardial contractility, brain development, cholesterol and glucose metabolism. In this paper H pylori infection in associaed with various micronutrients de fi ciencies is briefly reviewed.