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.
1 It could be small amounts of blood in the mouth, blood tastes coppery and salty. 2  Not a vitamin deficiency, but too much of a vitamin/mineral can cause metallic taste. 3  If you are taking supplements or vitamins look on the labels and see if there is an abnormally large amount of something.