Animals are at or near the top of the food chain. That puts them at high risk for "bioaccumulation," or an increased concentration of contaminants absorbed along the lower rungs of the food chain. This might include chemicals in the soil, chemicals in an animal's diet, hormones and antibiotics. Over time, these toxins can accumulate in tissues, especially fatty tissues, as well as the animal's milk or eggs.

For humans, who sit at the tip top of the food chain, it's important that we watch what we eat to prevent this from happening in our own bodies. If there's accumulated toxicity in the meat, eggs and dairy we consume, we are in turn absorbing it, which could create a variety of health problems. Fortunately, this can be avoided with organic products, which ban the use of supplements and hormones and require a more natural diet for cattle and chickens.

Our complete guides cover everything from why grass-fed beef is best when aged to how to prepare your steaks. Learn more about the nutritional qualities of meat, eggs and dairy, the differences between organic and conventional products and what to look for when you're buying. Debunk the myths and get the practical information you need to know!