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.
Post nasal drip. This is usually caused by having excessive mucus production, a sinus infection, or allergies resulting in the accumulation of mucus in the back of your throat or nose. When it drains from your nose to the back of your throat it can cause a salty taste in your mouth. Salivary gland disease.