Some believe HCG is a safe way to curb hunger, while others think it's dangerous and ineffective. Find out if this controversial diet could be right for you! Plus, chef Donatella Arpaia gives the low-calorie HCG diet a delicious makeover.

View Part 1 of The HCG Diet Controversy.

View Part 2 of The HCG Diet Controversy.

View Part 3 of The HCG Diet Controversy.

View Part 5 of The HCG Diet Controversy.

Read more about the science behind the HCG diet.

Learn more about Dr. Emma's new HCG diet.

Get chef Donatella Arpaia's low-calorie recipes.

Want to help lower your risk of getting cancer? The answer could be in the food you eat! Dr. John Whyte, chief medical officer at WebMD and the author of "Take Control of Your Cancer Risk," says there are three kinds of foods that could really help prevent cancer: garlic, fish and grapes. And what three kinds of foods should you avoid? Red and processed meats, refined grains, and alcoholic and sugary drinks. Watch the videos below to learn more about how food could be connected to your cancer risk.