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.
Stroke or Brain Tumour: In some cases the salty taste will not be caused by anything in your mouth at all, but rather faulty signals in your brain. If the salty taste has no other clear cause then you should consult with your doctor and they might suggest an MRI scan to rule out that possibility.