Malhotra also compared rates of gallstone formation (cholelithiasis) – seven times higher in the north than in the south;61 peptic ulceration,62 including the effects of wheat or rice diets in recovery;63 gastrointestinal cancers64 – more stomach and colon cancers in the south, more liver and gallbladder cancers in the north; and varicose veins, which were more common in those living in the
