Ketosis in or ketosis out ... it'll have no effect on the colour of your skin or mucous membranes.

Do you drink a lot of tea or coffee? Or do you smoke? It could be staining.

Another thought (this is way out in left field, but worth mentioning) ... do you eat a lot of cheese? Most orange-coloured cheeses use natural beta-carotene as the dye .. and it could stain your tongue.

Wordlady is right though ... you might want to brush your tongue at the same time when you brush your teeth.


hth,

Doreen