Quite simply, you need to start thinking for yourself, and ignore much, if not most, of the health- and dietary advice you get through the conventional channels. Fortunately, “eating healthy” is actually far easier than most people think. Here’s a quick and dirty summary:

• Focus on raw, fresh foods, and avoid as many processed foods as possible (for those who still have trouble understanding what “processed food” is: if it comes in a can, bottle, or package, and has a list of ingredients, it’s processed)
• Avoid foods that contain high fructose corn syrup (HFCS) like the plague, but don’t just limit it to HFCS, you must limit ALL sources of fructose to less than 25 grams per day, and that includes fruit. If you are taking the average amount of fructose you are consuming three times that or 75 grams. At that level any fruit will cause more harm than good for all but those engaging in unhealthy levels of aerobic cardio activity.
• Limit or eliminate grain carbohydrates if you have diabetes, are overweight, or have high cholesterol or high blood pressure
• Replace sodas and other sweetened beverages with clean, pure water

Source: Mercola.com