@Hardhitter:
1. Cancer is a complex disease and cannot be associated or controlled by only a single factor. Having said that, Indians generally are scientifically proven to be susceptible to weight gain or obesity. There is almost a direct link to weight issue and cancers.
-Taking into account that your question asks only about Indians in Kenya, it is probable that the ratio of Indians with cancer to the total population of Indians in Kenya seems to be high. This is misleading since you are considering the total population of Indians in Kenya which is negligible compared to non-Indian Kenyans.
-It is also possible Indians have access to medical facilities to diagonise cancer due to better financial position, whereas most Kenyans cannot afford or do not find it necessary to go for check-up
-Chinese and French who have been consuming garlic for many centuries have low cancer incidences.
-In another puzzling case is that Kenyan Masai consume alot of meat, milk and fat but they have low incidences of cancer and obesity.