According to the American Cancer Society, half of all men and one-third of all women in the US will develop cancer during their lifetimes. It is the second leading cause of death in America. Cancer is an equal opportunity killer and a leading cause of death around the planet.
The World Health Organization estimates that 84 million people will die of cancer between 2005 and 2015 without intervention. So, just what is cancer anyway? The American Cancer Society defines it clearly and concisely like this: “Cancer is the name for a group of more than 100 diseases in which cells begin to grow out of control.” Cells become cancer cells because of damage to DNA. Colin Campbell explains how cancer cells can be turned on or off.
Nutrition and Cancer
Much of the research conducted by health organizations in this and other countries typically does not have a vegetarian diet as the focus. However, most of the studies that include a nutrition assessment contain references to the benefits of eating more vegetables and fruits.
Over Consumption of Energy (Calories)
Eating too much food is one of the main risk factors for cancer. This can be shown two ways: (1) by the additionalrisks of malignancies caused by obesity, and (2) by the protective effect of eating less food. Obesity has reached epidemic proportions in the United States. Sixty-four percent of the adult population is over weight or obese . About 1 in 50 are now severely obese (BMI > 40 kg/m2) . Mokdad et al  found that poor diet and physical inactivity was the second leading cause of death (400,000 per year in the USA), and would likely overtake tobacco as the leading cause of death.
Foods and Immunity
In spite of our best efforts, cancer cells will arise in the body from time to time. Luckily, we have white blood cells that roam our bloodstreams looking for these troublemakers. Some of them, called natural killer cells, seek out and destroy cancer cells and bacteria. They engulf and destroy aberrant cells before they can cause damage. The function of natural killer cells and other white blood cells is improved by as little as 30 milligrams of beta-carotene per day, the amount in two large carrots.
Milk Consumption and Prostate Cancer
Prostate cancer is one of the most common malignancies worldwide, with an estimated 400,000 new cases diagnosed annually. Its incidence and mortality have been associated with milk or dairy product consumption in international and interregional correlational studies.Dairy products may influence the incidence or progression of prostate cancer by several possible mechanisms.
Generally speaking, diets high in animal products are associated with higher risk, while those rich in plant foods, particularly tomatoes, are associated with reduced risk.
Diet & Killer Diseases
“The World Statistics Annual 1994-1998 clearly shows that, as plant food consumption increases, rates of heart disease and cancer decrease. In other words, the more fruits and veggies we consume, the less likely we are to suffer from these ailments. Check out this graph comparing the diets and disease rates of various countries. The green bars represent percentage of plant food consumption and the orange bars represent percentage of killer diseases — shocking, huh?” – Paul and Ann Malkmus