The microbiome: The genetic material of all the microbes - bacteria, fungi, protozoa and viruses - that live on and inside the human body.
We are dependent on these microbes to help digest our food, produce certain vitamins, regulate our immune system, and keep us healthy by protecting us against disease-causing bacteria..
It seems the gut bacteria of obese individuals are very different from that of lean individuals, not only in the types of bacteria, but in the number of species present. In fact, studies show that when obese individuals lose weight, there is a shift in the microbiota, towards that of lean individuals.
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