Although there are many foods that you should eat more often to help prevent colon polyps, there are foods that you should limit or avoid.    Saturated fats, unlike omega-3 fats, have been shown to increase your risk for the formation of colon polyps and colon cancer.  One study in particular found that for every additional 100 grams of red meat that you consume (which is higher in saturated fat) your risk for colon cancer increases by 14%. Limit meats:  fatty cuts of beef, salami, hot dogs, bacon, sausage and deli meat.  These are highly processed and high in saturated fat. If you do choose to have these foods occasionally, stick to the appropriate portion of 3 to 4 oz total per serving. You may not realize that another group of foods that has been linked to colon polyps and colon cancer are sugary, sweetened foods.  Limit these in your diet.  The sugar from sweetened foods increase your glucose levels.  Studies have shown that with increased glucose levels, your risk for the formation of colon cancer increases as well.  Foods that are high in sugar and that should be limited include:  sweetened beverages, candy, cookies, cakes, pies, ice cream, sugary cereals, pastries and fruit juices. If you do choose to have these foods, make sure they are small portions and something you only eat occasionally - not on a regular basis. In addition to avoiding or limiting certain foods, you should also take care of how you prepare certain foods.  Charring or burning foods when you cook them may increase your risk of colon cancer.  When you cook foods, especially over a grill, you can char or burn them.  Although this may taste good, this charring creates carcinogenic substances in the food which have been associated with higher rates of colon cancer. If you are grilling foods try to avoid foods from becoming overly charred.  When eating, avoid the blackened bits or areas that are charred.  Remove with a fork and knife so they are completely removed from your serving. Another trick is to grill or cook foods over aluminum...

TL;DR in Indonesian:
Batasi konsumsi lemak jenuh. Kurangi konsumsi gula. Berusahalah menghindari makanan yang dibakar atau digoreng. Batasi konsumsi alkohol Anda.