Your family's diet should be balanced and should contain lots of fresh fruit and vegetables, legumes, grains, and low-fat meat and dairy. Fresh fruit and vegetables are high in anti-oxidants and roughage helps remove harmful toxins from the body.
Because environmental toxins, pesticides and poisons build up in the bodies of animals, it is common for meat and animal fat to contain harmful chemicals and even artificial hormones. Meat should be good quality and cuts should be low in fat content. The way you prepare and cook meat and fish contributes to how much bad stuff is consumed by your children. Trim excess fat and skin from meat before cooking. Broil or grill fish and meat so that the fat drips off and away from the food. Avoid frying meat since this draws in oil and seals the contaminants inside the meat.
Fish may have high mercury content or contain other water borne pollutants. Mercury and PCB's are among the toxins that can accumulate in certain fish species, especially predatory fish. Animals that are near the top of their food chain will have the most contaminants present. You should check what kinds of fish are safe in your local supply.
Buying certified organic food is the best way to ensure you have as little exposure to pesticides and toxins as possible. Avoid buying cheaper genetically modified food.
Certain foods have naturally less toxins, regardless of how they are grown. The safest foods include canned peaches, bananas, broccoli, canned and frozen peas, milk (organic), orange juice, grape juice, and apple juice. All fruits and vegetables should be washed and peeled before cooking or serving; this gets rid of possible surface contaminants and pesticides.