To be absolutely brutal and honest with you, nobody cares about I look forward to hearing from you.. The practical reason is that it's one of the various standard and conventionally polite ways to end the body of the letter. It's just a standard exit.
1 In some cases, liver failure causes this taste to occur. 2  Gastroesophogal reflux disease can cause the salty taste (even when no pain is present). 3  Some medicines can make everything taste odd. for example the drug enalapril, which is a drug used to prevent heart failure.
Less commonly, an unpleasant sweet taste in the mouth could be caused by a dietary deficiency. A zinc, folic acid or vitamin B deficiency could contribute to changes in taste.(7,8,9) Usually, when sweet taste in the mouth occurs on its own and disappears in a couple of days, itâs not to be considered a major problem.