After a TikTook video from an ‘acupuncture physician’ claimed people with cracks in their tongue with a thick yellow coating shouldn’t drink coffee we reveal the real tongue symptoms you should keep an eye on.After a TikTook video from an ‘acupuncture physician’ claimed people with cracks in their tongue with a thick yellow coating shouldn’t drink coffee we reveal the real tongue symptoms you should keep an eye on.Read MoreHealth News | Mail Online