The World Cancer Research Fund survey has issued a report today and there are clear findings to link obesity, and the British drinking culture is linked to cancer.
And it states that there is a direct relation between the extent of excessive weight and alcohol intake and the likelihood of falling victim to cancer.
The survey team has not carried out new research, but has reviewed 500,000 published papers from around the world, selecting the 7,000 most relevant and distilling their findings on cancer into a single report.
Survey chair Professor Sir Michael Marmot, professor of epidemiology and public health at University College London, said he was surprised at the strength of the link it established between weight and cancer risk.
And he said there was a "very clear message" from its findings for the general population: "Firstly, as you enter adulthood, don't put on weight. Secondly, if you are already overweight, it is likely that losing weight would lower your risk."
Prof Marmot told BBC Radio 4's Today programme: "One of the surprises to me - as a relative non-cancer expert - is the importance of obesity and overweight.
"We have known about obesity and overweight in relation to cardio-vascular disease and diabetes. The idea that it is strongly linked to cancer, I think, is relatively new."
The direct link between increased weight and increased cancer risk was even stronger than that linking cigarettes with cancer, he suggested.
"With smoking, we know that if you smoke you increase your risk, but most smokers in the end don't get cancer, so it's not a one-to-one relation," he explained. "With obesity and overweight, it is very clear and it is a graded phenomenon. The more overweight you are, the more obese you are, the higher the risk of cancer