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... An active baseball and basketball player, the family assumed Jack had shin splints. But it turned out, he had a bone tumor, a cancer known as osteosarcoma.

"It's the hardest thing I've ever had to watch in my life. I never wish it upon anybody," said Sarah.

A new, large study by the American Cancer Society found that Generation X and Millennials are at greater risk of developing 17 of the 34 cancer types than previous generations.

These include breast, pancreatic, and gastric cancers.

The risk of death also increased for Gen X and millennials, particularly associated with liver (among females), uterine corpus, gallbladder, testicular and colorectal cancers, the study showed.

"These findings add to growing evidence of increased cancer risk in post-Baby Boomer generations, expanding on previous findings of early-onset colorectal cancer and a few obesity-associated cancers to encompass a broader range of cancer types," Dr. Hyuna Sung, lead study author and a senior principal scientist of surveillance and health equity science at the American Cancer Society, said in a press release. ...