Dr Maria Abreu is on the cutting edge of one of the biggest health tragedies in a generation. Over the past decade, the Miami gastroenterologist has diagnosed an increasing number of young people with colon cancer - once considered an old person's disease. Dr Abreu [said] she believes two additives that became common in the 1970s ... are seldom talked about in relation to the colon cancer crisis. The first is high-fructose corn syrup, a liquid sweetener uniquely common to the United States and not used in other countries. High fructose corn syrup was introduced in the 1970s as a bid to stabilize food prices. At the time, President Richard Nixon authorized subsidizing corn crops. High-fructose corn syrup ... became cheaper to produce than sugar. The other ingredient is emulsifiers, which is used to give foods a creamy texture and found in healthy foods such as low-fat yogurts, cottage cheese, and peanut butter. Dr Abreu said these ingredients wreak havoc on the microbiome, a network of healthy bacteria in our guts, [reducing] our ability to protect the digestive tract from pathogens that irritate our cells and create inflammation. Chronic inflammation can also lead to inflammatory bowel conditions like Crohn's disease and ulcerative colitis, which Dr Abreu said 'significantly' raises the risk of colon cancer. The introduction of high-fructose corn syrup and emulsifiers in the 1970s and 80s could explain why so many adults in their 40s are getting colon cancer. Researchers from the University of Missouri-Kansas City [found that] the rate of colorectal cancers grew 500 percent among children ages 10 to 14 and 333 percent among teenagers aged 15 to 19 years. Rates rose by 71 percent among people 30 to 34 to seven cases per 100,000 people.