sandy and mallory had their stomachs removed because they were at such high risk for developing the disease. charles readykin and his colleagues studied rates in a quarter of u.s. adults ages 25 to 84 for 30 years. >> the study confirmed the previously recognized decline in gastric cancer overall. >> reporter: the study confirmed that rates had gone down but -- >> we did identify a worrying increase in the youngest age group of caucasians, 25 to 39 in whom cancers of the lower stomach increased about 3% a year. >> reporter: it is known as noncardic cancer. >> we are concerned there maybe either a new cause for the gastric cancer or a possible new risk for cancer. >> reporter: these women don't know why the disease gripped their family but they are determined to protect future generations by helping doctors to figure it out. >> what increases the chances of stomach cancer? family history plays a role but the american cancer so it says a diet low in fruits and vegetables and high in salted or smoked and preserved foods can raise the risk as well as smoking. >>> drinking coffee can be good for

. >> the body of george mallory. >> anonymous skeleton goes for a lot of money these day autos you've got to move on. >> could be wornl a lot. >> don't encourage him! >> always a pleasure, dr. p. >> thank you. >> is sioux city super? you bet. and this is very violent for me. >> check out the pod cast. just search fox news red eye. look for us in the pod cast section. or us in the pod cast section. >>> >>> sioux city is a fantastic community with a great work ethic. what makes it a great place is the way it was built. >> suchl city. ♪ >> sioux city. ♪ [ music ] muz. ♪ [ music ] we built this city. ♪ [ music ] we built sioux city on rock and roll. ♪ [ music ] . >> well done, sioux city. >> amazed. >> i'll be there this weekend. can't wait to check out ojai yes. >> we'll close things out with a post-game wrap up with andy leafy. he's our own little sioux city. for more go to fox news.com slash red eye. than many other allergy medications. hoo? omnaris. [ men ] omnaris -- the nose! [ man ] did you know nasal symptoms like congestion can be caused by allergic inflammation? omnari