David,
I was told the crevises in the tongue usually developed when you are low on vitamin B. Try a vitamin B50 complex. It also helps strnegthen your nails. I took it for years until I developed an intolerance of all vitamins and supplements.

Take care,
Eileen


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Aug 1997 unknown primary, Stage III
mets to 1 lymph node in neck; rt ND, 36 XRT rad
Aug 2001 tiny tumor on larynx, Stage I total laryngectomy; left ND
June 5, 2010 dx early stage breast cancer
June 9, 2011 SCC 1.5 cm hypo pharynx, 70% P-16 positive, no mets, Stage I