Your expressions often contain important personal signs. Someone who continually says, "It pisses me off," may have bladder or kidney problems. Habitually saying, "I can't stomach this," may be a sign of indigestion or difficulty in digesting food. If we say, "I could have died," or "I am sick to death of it," we may subconsciously be expressing a death wish. The expression, "It makes me irritable when . . ." can indicate a skin irritation.
— Denise Linn, The Secret Language of Signs