Dr Eno said: “In older children and in adults, stool may acquire a green hue in those whose diet is high in green vegetables, typically leafy ones like kale, cabbage, lettuce.
“The green [occurs] due to the green pigment in the plants known as chlorophyll.
“It has to be remembered that in the case of large amounts of green vegetables eaten, some of that plant material is the carbohydrate cellulose, which is indigestible, so will end up in the stool, some of it containing chlorophyll inside that undigested plant material.
“The other typical cause is high amounts of green colouring in foods and confectionery, which may be natural (typically chlorophyll or derivatives of it) or artificial.”
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