In case that the Jupiter Mount is visibly much more puffier than First Mars Mount (The area between the pointer and thumb, below Jupiter and Venus Mount), the person may be troubled with gastritis caused by bile reflux.
When the Jupiter Mount is sunken, soft and yellowish, there may be serious issues with the gallbladder and bile duct. It could be chronic cholecystitis, Gallstones, Gallbladder Polyp, Primary biliary cirrhosis, or Gallbladder cancer.