"The risk of cancer increases in young adults for half the cancers that are related to obesity, with progressively steeply growing at a young age," says co-author Ahmedin Jemal, vice president of the Surveillance and Health Services Research Program for the American Cancer Association.
The risk, he says, was increasing stepually in young people in a row.
"The findings of this study are a warning of the increasing burden of cancer related to obesity in older adults in the future," said Jemal, "possibly preventing or reversing the progress made in terms of reduce cancer deaths over the past decades. "
Cancers are usually seen in the elderly
The six cancers related to obesity that showed steady increase among younger adults were colorectal, endometrial, gallbladder, kidney, pancreas and multiple myeloma, bone marrow cancer.
Most of these cancers have been traditionally shown in patients later in life, usually in their 60s and 70s.
Yet, the study found that some of the most significant progress can be seen in the three-year age brackets, at a time when "general causes of cancer fall in men and stabilize women in the United States United States, "said Jemal.
Take pancreatic cancer, for example, usually diagnosed among people over 65. The analysis of the average annual increase for pancreatic cancer was 4.34% for people aged 25 to 29, 2.47% in people aged 30 to 34, 1.31% for those aged 35 to 39, and no but 0.72% are between 40 and 44 years old.
Overall, the risk of colorectal, endometrial, pancreas and bladder cancer in millennials was approximately twice the rate of baby-boomers of the same age, the study found.
In contrast, rates decreased or stabilized in junior junior brackets in each but 18 non-obesity cancers, including smoking cancers and infection-related cancers. Both cancers that were not related to obesity that arose in the younger age groups were heart cancer and lung cancer, blood cancer.
"This study shows that the incidence of cancer related to obesity has been increasing in groups of individuals born in more recent decades," said Dr. George Chang, MD Anderson Cancer Center, who was not involved in the analysis.
However, Chang warns gorgyffrousu based on an epidemiological study.
"The study had not set up to set up a case," said Chang. "We know that there are many factors that are related to obesity and cancer, such as lack of exercise and poor diet. How much each of these factors contributes to cancer is less clear."
Obesity is a global epidemic
That expertise is related to associated medical conditions such as heart disease, diabetes and up to 13 cancers.
"Yet, I believe that the general public does not know that obesity is related to cancer," said Dr. Nathan Berger, the Case Western Reserve oncologist, who was not involved in the American Cancer Society study.
The connection between fat and cancer
Fat cells, called adiopose cells, do more than store excessive calories in the body. They also release fatty acids similar to hormones and proteins that affect fetabolism, body weight and reproductive functions.
Science is trying to find out how those hormones could contribute to some cancers.
According to Berger, who runs a lab that focuses on obesity and cancer, one likely theory is that some of those hormones match receptors in some cancers but not others, stimulating tumor growth in Cancers that are fine.
Regardless of what happens, science knows that the society is genuine.
"We know in animal models that obesity accelerates the start of cancer," said Berger. "And we know in people that obesity is associated with cancer increases and poorer programs for patients with cancer. This is well established."
Chang, an oncology surgeon, said that one of the reasons for a poor prescription is the effect of excessive pressure on surgical outcomes. It indicates that five of the six cancer on the increase in younger adults – colorectal, gutter, gallbladder, kidney and pancreas cancer – are physically treated.
"A obese patient will be at greater risk for complications and often absorb more serious complications by surgery than someone with optimal pressure," said Chang.
Call wake up on obesity
What is shown by this research, Berger, is a society between cancer and obesity at junior and under age. That, he says, should be a call for doctors, policy makers and the public, especially when there is obesity among children.
"We need to make sure the public is aware that you do not have time to become obese," said Berger. "What this means is that you can not say," What's a nice little, chubby, but do not worry about it, they will grow out of it. "Because of what's It happens that small obesity may already affect the carcinogenic process. "
Chang agreed that urgent action was needed.
"Childhood obesity is actually a major predictor of adult obesity," said Chang, "I think it highlights the importance of reducing obesity rates through more diet, better and more exercise. Those things are priority one of any public health policy. "