Which menu special should you order to keep your colon healthy? Go for the seafood platter.

According to a large 22-year study, men who eat fish and shrimp five times a week have a 40 percent lower risk of colorectal cancer. Just get it broiled, not fried, and go light on the butter.

What's Fish Got That Colons Love?
Researchers aren't sure why frequently eating fish has such a protective effect on colon health. The omega-3 fatty acids and the vitamin D in fish might get the credit. Or it could simply be that fans of fish eat less red meat -- something known to raise colon cancer risk. Regardless, grab that mahimahi burger instead of the beef patty. Which fish is tops in omega-3s but lowest in mercury? Read this to find out.

Get Hooked
Eating finny food protects not only your colon but lots of other important body parts, too. Here's what else benefits:

• Your heart. Find out how fish keeps it beating steadily.
• Your kidneys. Fish helps you kiss this kidney ailment goodbye.
• Your brain. Feed your mind fish and these five other smart foods.

Video: Roll up your sleeves and tackle the day's big catch. Watch this video for tips on how to fillet a fish like a master chef.

Recipe Corner
On a crisp fall day, there's nothing more delicious than a steaming bowl of cioppino. Learn how to make this hearty, good-for-you seafood stew.

A 22-year prospective study of fish, n-3 fatty acid intake, and colorectal cancer risk in men. Hall, M. N. et al., Cancer Epidemiology, Biomarkers & Prevention 2008 May;17(5):1136-1143.