- Overweight and obesity increase the risk of 13 types of cancer
- Excess fat accumulation can cause overproduction of hormones
that promote tumor growth
- Maintaining a healthy weight can reduce the risk of cancer
A healthy weight
has been linked to reduced risk of chronic diseases and premature death. Now, a
new study suggests that maintaining a healthy weight in adulthood
decrease the risk of developing eight more types of cancer.
The rates of
overweight and obesity are on the
. Globally, more than 640 million adults and 110 million children
are obese. One-third of the children and adults are obese in the United States.
‘A healthy diet and regular exercise go hand in hand to maintain a healthy body weight and prevent the risk of developing 13 types of cancer.’
and obesity can cause thirteen types of cancer such as
study was based on a review of more than 1,000 studies of excess weight and
cancer risk analyzed by the World Health Organization's International Agency for
Cancer on Research (IARC), France. In 2002, the researchers found evidence
linked to excess weight or obesity to increased risk of cancers of the
"The burden of cancer due to being
overweight or obese is more extensive than what has been assumed. Many of the
newly identified cancers linked to excess weight haven't been on people's radar
screens as having a weight component," said cancer prevention expert
Graham Colditz, MD, DrPH, at Washington University School of Medicine in St.
Louis, who chaired the IARC Working Group.
healthy diet, maintaining a healthy weight, regular physical activity, quitting
smoking and alcohol can have a significant impact on lowering the risk of
"Public health efforts to combat cancer
should focus on these things that people have some control over," said
suggests that maintaining a healthy weight over the decades could help reduce
cancer risk. But, shedding those extra kilos is hard for many people.
"Rather than getting discouraged and giving up, those struggling to take
off weight could instead focus on avoiding more weight gain," said
Few more cancers
have been added to the list of cancers that occur due to excess weight gain.
The researchers noted that "higher the body mass index (BMI), greater the cancer risk."
The study showed
that cancer risks associated with overweight and obesity were similar for men
and women, consistent across geographic regions - North America, Europe, Asia
and the Middle East. Excessive accumulation of fat leads to overproduction of
hormones such as estrogen, testosterone, and insulin that promote inflammation
and cancer growth.
numbers of the U.S. and the world's population are overweight. This is another
wake-up call. It's time to take our health and our diets seriously," Colditz
said. The findings of
the study are published in The New England Journal of
Between Obesity and 8 Newly Listed Cancers
Globally, stomach cancer
is the fifth most common type
of cancer. It is more common in men than women. A review of 89 global studies
found that overweight and obesity are the major risk factors for cancer of the
upper stomach. Other risk factors are excessive consumption of alcohol and
excess body fat is linked to increased risk for liver cancer. Body fat releases
hormones in the bloodstream that contribute to insulin resistance and
inflammation, promoting tumor growth. Liver cancer
is the tenth type of cancer to be
linked to overweight and obesity.
The risk of
and obesity is due to higher frequency of gallstones (a main risk factor
for gallbladder cancer). High scores of BMI increases the risk of gallbladder
cancer by 25 percent. Globally, gallbladder cancer is the 20th most common
cancer. A report by the American Institute of Cancer Research reaffirmed the
findings of previous research by the World Cancer Research Fund International
(WCRF International) that overweight and obesity increase liver cancer risk.
among overweight and obese individuals is due to increased
waist circumference. A study published in the American Journal of
found that longer a person is obese (from age 18 to
50), the more risk increases for pancreatic cancer. For every ten years of
being overweight or obese, the risk of pancreatic cancer increased by 6%. The
study also showed that the risk increases among those who have diabetes.
is the eighth type of cancer
linked to overweight and obesity. Ovarian cancer is the fifth leading cause of
cancer death because women are diagnosed only at the later stages. Health
experts advise that women should maintain a healthy weight to help protect
against the deadly cancer.
(Type of Brain Tumor)
published in the journal Neurology
linked overweight and
obesity to an increased risk of a type of brain tumor called meningioma. It is
rare cancer that occurs at a rate of five to eight cases per 100,000 people per
year. The study found that overweight people were 21 percent more likely to
develop meningioma compared to normal weight people. Fifty-four percent of
obese people are likely to develop meningioma.
In the past
three decades, obesity and overweight have contributed to the rise in thyroid
cancer incidence. A study published in the journal Obesity
found that the risk of thyroid cancer was stronger among
individuals with a BMI score 30.0 kg/m2 and above. Another study published in
The Journal of International Medical Research
overweight increased the risk of thyroid cancer risk among non-Asians, but not
is the second most common cancer of the blood. A new study found
that approximately one-third of multiple myeloma patients are obese.
Maintaining a healthy body weight could prevent the risk of developing multiple
myeloma. Besides the evidence of obesity as a major risk factor for multiple
myeloma, obesity plays a key role in the prognosis of the disease. The overall
survival rate in obese patients with multiple myeloma was shorter compared to
patients with normal weight, according to a study published in the journal
Reduce Cancer Risk
- Eat a balanced diet containing more fruits and vegetables,
whole grains and legumes.
- Follow a Mediterranean diet (plant-based foods and healthy
fats such as olive and canola oil)
- Avoid refined sugars and animal fat
- Avoid high-calorie foods and drinks
- Limit consumption of processed meat
- Avoid the use of tobacco products
- Limit or avoid alcohol consumption
- Maintain a healthy weight
- Engage in regular physical activities such as aerobics, walking and jogging
- Get regular health checkup
- Skin cancer - Protect yourself from the sun - (http://www.mayoclinic.org/healthy-lifestyle/adult-health/in-depth/cancer-prevention/art-20044816?pg=2)
- Obesity and Cancer Risk - (http://www.cancer.gov/about-cancer/causes-prevention/risk/obesity/obesity-fact-sheet)
- New Liver Cancer Report, New Links Emerge: Coffee Is Protective, Obesity Increases Risk - (http://www.aicr.org/press/press-releases/2015/liver-cancer-report-new-links-emerge-coffee-protective-obesity-risk.html?referrer=https:www.google.co.in/)
- Obesity throughout Life Increases Pancreatic Cancer Risk - (http://www.aicr.org/cancer-research-update/september_25_2013/cru-obesity-through-life-increases-pancreatic-cancer-risk.html?_ga=1.238750336.1809873846.1472103897)
- Overweight, obesity and thyroid cancer risk: a meta-analysis of cohort studies. - (http://www.ncbi.nlm.nih.gov/pubmed/23321160)