If there is a sign of Gopuch (Cow tail) at the end of Lifeline or if there are some lines dropping downwards at the end of lifeline then it indicates subject could suffer from ill health in old age. fig-1
If there is a only one downward small single line from at the end of lifeline then it indicates diabetes and urinary related problems.
Island at the end of lifeline also indicates some chronic health problems in old age.