Abstract
Fermentation of foods had been dated to early human life on the planet far more before civilization. The transition from hunting and gathering to the agricultural lifestyle might have triggered task of food fermentations, nowadays this task is carried on industrial level. Many parts of the human body; the skin, oral cavity, gut, and vaginal canal are populated by huge numbers of microbes. At birth, human gut is a sterile environment, however it will start to be colonized instantly after birth. Factors such as diet (formula or breast feeding) and type of delivery (either vaginal birth or abdominal) can both impact the colonization patterns. The pioneer microbes inhabiting the gut make permanent adaptations and thus determining the metabolic, physiological, behavioral, and immune development which will encourage vulnerability to diseases. Because Age and lifestyle are associated with alteration in microflora, therefore are of some causes of diseases. Latest research has shown that microbiota composition is remarkably different in diseases such as obesity and periodontal diseases with healthy individuals usually showing diverse, distinct, and temporary stable microbiota communities at these sites in comparison with individuals manifesting disease.