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Question

Do you think the microorganisms in the large intestine have any other role other than producing odour in the faeces ? If yes, then what role do they have?

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Solution

• Break down undigested food.

• Neutralise some of the harmful by-products of food breakdown.

• Aid the absorption of nutrients.

• Produce certain vitamins such as Vitamin K, needed for blood clotting.

• Make life uncomfortable for harmful bacteria by competing for food and controlling levels of oxygen and acidity in the gut so that the living conditions favour beneficial species.

• Because the majority of the immune system is located in your gut, beneficial bacteria also help support the body’s natural defences.


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