In the fight against cancer, there is a surprising tool in the arsenal: the food we eat. That’s because some nutrients in food have been found to play a role in preventing cancer, and it’s relevant because the World Cancer Research Fund reports that 30 to 50 percent of cancer cases are preventable, putting a focus on stopping cancer from developing in the first place.

Xiang-Dong Wang, a senior scientist and associate director of the Jean Mayer USDA Human Research Center on Aging at Tufts, studies how food can help prevent cancer development, particularly lung, liver, and colon cancer.

Although the rate of most cancers is dropping, there is increasing concern about the rise in both incidence and death rate of liver cancer in the United States, partially due to the parallel rise in nonalcoholic fatty liver disease, obesity, and diabetes.

Besides that, everyone living much, much longer would cause many other problems. Where do the children of these centenarians live?

Until workable life-preserving technology is available, immortality enthusiasts are also obsessed with staying healthy – some fast on certain days, others watch calories, most exercise – so they are around long enough to benefit from emerging anti-aging science.

In 2019, the quest for everlasting life is, largely, though not always, more scientific. Funded by Silicon Valley elites, researchers believe they are closer than ever to tweaking the human body so that we can finally live forever (or quite a bit longer), even as some worry about pseudoscience in the sector.

Scientists and entrepreneurs are working on a range of techniques, from attempting to stop cells aging, to the practice of injecting young blood into old people – a process denounced as quackery by the Federal Drug Administration this week.