Are we living in a toxic environment? The experts at Canyon Ranch ask us to consider these facts:

• The EPA estimates that 4.7 billion pounds of toxic chemicals are released into the environment annually.
• It's likely that 25 percent of the U.S. population suffers from some level of heavy metal poisoning.
• Fourteen pounds of food colorings, additives, preservatives, emulsifiers, and flavorings are consumed per person each year.

Toxic? Maybe. At minimum, though, we are living in a world filled with chemicals, pesticides, additives, preservatives, antibiotic and hormone residues, and heavy metals. Whether consumed, inhaled, or absorbed, our bodies soak this stuff up. In order to reduce the load, and the toll it takes it takes on our health, there's something we can do. We can eat clean. Here's how:

We're lead to believe that if we eat our fruits and veggies, we should be just fine healthwise. But despite all the antioxidants, fiber and nutrients, a major study recently found that those who consumed a diet high in produce and low in fat fared no better when it came to cancer than those who ate a less healthy diet. This news, to me, is both liberating and disappointing -- on one hand, I don't have to wallow in guilt when I cave to my pizza craving, but on the other, if our diet doesn't have an impact on our chance against cancer, what does? Are we doomed?

Barbara Ehrenreich's blog says the answer might lie in your attitude, and I wholeheartedly agree. Those who are optimistic and determined to beat what ails them have a must better chance of coming out on top. Faith, hope and laughter are what keep us going, even when facing cancer. Do you agree?

The brighter the fruits and veggies, the better they are at fighting cancer. It's the phytochemical compounds -- these give produce its color -- that help the immune system block cancer-causing substances from cycling through our bodies.

The Centers for Disease Control and Prevention (CDC) and the Produce for Better Health Foundation say we should eat nine to 11 servings of vegetables and fruits daily. Taking supplements is not enough -- we need the complex interplay of vitamins, minerals, and fiber.

These are the colors we should include in our diet each day:

Oregon State University (OSU) researchers have been working on creating a purple tomato for several years and predict that one should be available in the local grocer's within two years. The eggplant purple tomato will have all the healthy tomato antioxidant lycopene goodness the red orbs offer now with the added benefit of blueberries nutrition in phytochemicals believed by some to offer cancer prevention functional food benefits.

According to OSU Professor Jim Myers, the new hybrid eggplant purple tomato will be the first true purple tomato. According to an OSU backgrounder on the purple tomatoes, hundreds of years ago, explorers discovered purple tomatoes in the wild, but those tomatoes never made it to the table because the fruit was small and some were poisonous. In the 1960s and 1970s, scientists collected seeds from these tomatoes and started to breed them with modern hybrids, making them safe to eat. They discovered that the new purple tomato, unlike the traditional red, contain high levels of anthocyanins, a chemical found in dark fruit pigments such as blueberries and grapes.

Some days, science is just plain fun.

Isothiocyanates, chemical compounds found in cruciferous vegetables such as broccoli, Brussels sprouts and watercress are able to kill cancer cells that have become resistant to chemotherapy drugs, according to the Free Radical Research Group research team from Christchurch School of Medicine and Health Sciences, University of Otago.

Basically, isothiocyanates drive cancer cells, and the protein Bcl-2 that seems to aid cancer cells in surviving, to apoptosis or in more descriptive terms -- a self-destructing suicide. The researchers are hoping this discovery might lead to the development of cancer-fighting drugs derived from isothiocyanates.

In the meantime, as they work on better cancer-fighting drugs based on beneficial chemical compounds found in foods, it won't hurt us to eat more veggies. Okay, except for the current recall of E. coli contaminated spinach. Right now, don't eat your spinach.

While the study suggests that not all cruciferous vegetable are equal in the ability to kill cancer cells, and specifically refers only to broccoli, Brussels sprouts and watercress -- other cruciferous vegetables include arugula, cauliflower, cabbage, Bok Choy, rutabaga, Chinese cabbage, Daikon, radishes, turnips, kohlrabi, kale, and turnip, mustard and collard greens.

Where does the time go? Even though most of us have been experiencing the height of the summer season in the form of a nationwide scorcher of a heat wave, summer is almost over for school kids and teens leaving for college. Yes, in less than a month, it's back to school. There are advertisements everywhere you look for new school supplies and new school clothes. In preparation for the new school season, Duke Health has published Back to School Tips for Healthy Eating.

The experts say it is not about counting fat grams and calories but portion control and choices. According to pediatrician Dr. Terrill Bravender, "You don't have to be obsessive about it. If you generally eat healthy, there is room for some foods that aren't as healthy."

Dr. Bravender offers these basic common sense tips:

• Involve kids in lunchbox planning. If you let them make some choices about what goes into their lunchbox, they are more likely to eat it.
• Avoid the peanut butter and jelly rut. Nothing wrong with the traditional, but try new foods. Make it a food adventure.
• While everyone is still on summer break, encourage children to prepare their own lunch. Dr. Bravender suggests easy-to-make ideas like graham crackers with peanut butter and a glass of milk; fresh fruit with cheese cubes; a hard boiled egg with whole grain crackers; yogurt with a sliced banana; granola bars with milk; or tortilla chips and bean dip made without hydrogenated oils.
  

Ultimately, as the mother, what foods come in to the home are my choosing, so I try to make nutritious choices in food purchases. But I have found great success over the years by taking my kids to the grocery store with me, and allowing them to choose between several choices I offer. We also take a look at new foods, and talk about the food item. We read ingredients. Some we decide, by group vote, to bring home and try. During the growing seasons, they are with me when I stop at a roadside stand to buy local produce straight from the field, and each year we have an annual tradition of blueberry picking enough blueberries to last most of the year ahead. Food can be fun, and learning about good food a lifetime benefit in cancer prevention.