This is because some honey contains low count of naturally occurring bacterial botulinum spores, which bees collect together with the nectar. These spores cannot be removed during honey processing and cannot be detected by consumers. A baby's immature digestive system is not yet acidic enough to inhibit the toxin from being produced, whereas the digestive system of an older baby and adults is. Hence, there is a potential for these organism to thrive and grow in the intestines of young infant’s intestines and produce toxin, possibly causing a serious form of food poisoning known as infant botulism. The typical symptoms of this illness are constipation followed by general weakness and poor feeding ability.