Researchers at the Dana-Farber Cancer Institute in Boston say exercise helps combat breast cancer. Not the first time we've heard this fact. But these same researchers have something new to say -- about the reason physical activity lowers the risk of breast cancer recurrence.

Jennifer Ligibel, MD, of Dana-Farber, reports that exercise lowers levels of the hormone insulin in the bloodstream. This is significant because there appears to be an association between relatively high levels of insulin, seen in obese and sedentary people, and an increased risk of breast cancer recurrence and breast cancer-related death.

"We know that women who are overweight at the time of breast cancer diagnosis have a higher risk of recurrence than lean women, but the reasons for this have not been clear," said Ligibel.

Absence makes the heart grow fonder? Or: Out of sight, out of mind? I think I like this one best, at least when it comes to snack time for my kids.

Our house was once stocked with sugary treats. It wasn't odd for us to have a bowl of M&Ms in our cupboard, Oreo cookies and fruit chews in the pantry, and a whole host of other not-so-healthy go-to items. Now we have none of it. And while my little boys occasionally search for their old demons, they mostly have adjusted well. They don't crave sweet things any more now that they're gone; they actually rarely mention them. Now I admit they do stake out houses that allow for sweet things when they get the chance but at home, they are content with an apple, a bowl of strawberries, homemade popcorn with just one tiny drop of oil and no butter.

I'm eager to introduce my boys to new healthy snacks so our routine doesn't grow stale. Here are seven ideas I like. You might like them too.

If a desire for healthy eating is anywhere present in your mind, I have a suggestion for you. Next time you head into your local grocery store in search of goods to fill your cupboards, your shelves, your refrigerator, I want you to try this: steer clear of the inside aisles of the store.

Think about this:

The healthiest foods, the freshest foods, the whole foods are housed on the outside walls of grocery stores. Fruits, vegetables, breads, meats, dairy, and often times the organic department border the aisles filled with cookies, candies, colas, crackers, cereals, dressings, and a whole host of other preserved items. So see if you can shop without entering the less-healthy regions of your store. And if you must make a detour, shoot for the most natural foods you can find. If your search is for cooking oil, opt for canola oil instead of vegetable oil. If peanut butter is your thing, pick up natural nut butters. If you must have mayonnaise, reach for reduced fat or soy versions.

Staying on the perimeter of your store still requires some thinking -- meats should be lean, breads should start with the word whole, cheeses and dairy should be low in fat, and juices should be free of sugar. But still, this is the healthiest place for your next grocery store stroll.

I want to look like my son. I want a body like his anyway. He's long and lean and fit and well, six years old.

I know I'm not comparing oranges and oranges here but still, I decided to ask Joey today about his eating habits, his fitness routine, his advice for those seeking health and wellness. His little brother, Danny, chimed in too -- he's almost four years old -- and together they rattled off all sorts of wisdom.

I asked my boys seven questions to which they easily responded -- Joey while jumping the entire time (note to self: jump a lot), Danny while sitting next to me on our living room recliner, fiddling with the TV remote.

What are some healthy foods?

Joey said: "corn-on-the-cob, lettuce, salads, potatoes, strawberries, apples, and peanuts" -- in that order. Danny said: "chicken, broccoli, and noodles." A good start, I think.

What are some unhealthy foods?

Joey listed his favorites -- chocolate and candy -- and then added: "big, dark chocolate bunny rabbits and Swedish fish candy." Danny summed it up in one word: "candy."

What are some good exercises for your body?

Joey said: "running on the treadmill." Danny followed with: "running on the sidewalk." Joey was next with, "I have a good one, and it's good for your jaws too -- talking." He continued with: "jumping, jumping jacks, push-ups, knee lifts, lifting weights, and stretching."

What do you do to cheer yourself up when you're sad?

Joey talks to people and has fun. Danny laughs.

What is bad for you body?

"Cigarettes, cigars, smelling smoke and gas, and smelling pollen," said Joey. "Eating candy," said Danny.

What are some ideas for staying healthy?

Joey recommends: "stop smoking, stop smelling smells in the air, put sunscreen on so you don't get sunburn, and don't drink pool water." Danny recommends: "don't swallow your gum."

What else do you have to say about being healthy?

Joey: "make sure not to accidentally swallow air that has allergies in it, make sure to drink a lot (I don't think he's referring to alcohol), exercise a lot, hold a new baby, always water your plants, and never touch plants with three leaves -- that's poison ivy." You might want to fact-check the poison ivy part.

Danny: "love your mommy, hug babies, don't touch spiders that are alive, and go pee-pee every day."

I think my boys are on the right track. And I think I have my work cut out for me in my search for that perfect six-year-old body.

Once upon a time there were two groups of mice, all genetically engineered to develop prostate cancer. Each group was fed the same amount of calories. One group of mice lived in cages warmed to 80.6 degrees. The other group lived in cages kept at 71.6 degrees. The mice in the cooler quarters burned more calories to keep warm. And after three weeks, they weighed less than the toasty warm mice. They were also less likely to develop prostate cancer.

Then there were two other groups of mice, also genetically engineered to develop prostate cancer. Both groups were kept in cages with temperatures 80.6 degrees and 71.6 degrees -- like above. But these mice got to eat whatever their little hearts desired. The mice in cooler cages ate 30 percent more than the mice in warmer cages. They got just as fat as the warm mice. And they all got prostate cancer at the same rate, despite the extra calories.

The moral of the story is this -- being lean rather than obese has a greater protective effect against cancer. Excess calorie retention, rather than consumption, raises cancer risk. This moral stands in contrast to what most researchers believe -- that a restricted diet cuts the risk of and slows the growth of cancer and this is directly related to calorie intake.

Tim Nagy, Ph.D. and professor of nutrition sciences at the University of Alabama, Birmingham and lead researcher on the mice story says when you eat more calories than you burn, you store the extra calories as fat. It's the fat cells -- not the extra calories themselves -- that affect cancer risk.

It's not a good idea for humans to chill themselves to avoid cancer, Nagy says. But perhaps people could get the same effect by exercising more since that, too, burns calories.

Nagy's study appears in the January 1 issue of the journal Cancer Research.

Children and teenagers -- mostly girls -- need zinc, a mineral important for maintaining healthy immune systems and healthy skin and for preventing colds and infections. Yet half of all teenage girls have zinc deficiencies.

Red meat is the most effective way of channeling zinc into the body. Perhaps these young girls are eating red meat less than two times per week -- a practice research shows can contribute to zinc deficiencies.

Iron is vital for good health. Menstruating women need it. The elderly need it. Pregnant women need it. And children need it too. But many lack healthy levels of iron.

Red meat contains a lot of iron. And while iron also comes from vegetable sources, meat contains more iron than most foods and is best utilized by the body in this form.

Red meat also contains B vitamins, phosphorus, potassium, magnesium, selenium -- and protein, critical for muscle and organ health. Protein from red meat is complete, meaning it contains all the amino acids the body cannot make on its own. Protein helps the body repair and renew.

There is definitely a good side to eating red meat. There is also a bad side.

Red meat has been linked to incidences of bowel cancer, breast cancer, heart disease, Alzheimer's disease, osteoporosis, arthritis, high cholesterol, clogged arteries, and food poisoning.

Experts say the controversy surrounding red meat comes down to the type of meat we are eating -- and how we are eating it.

There are three official red meats -- pork, lamb, and beef. Pork is the leanest, lamb is the fattiest, and beef is the most nutritious. Red meat is typically high in saturated fats and bad cholesterol. But lean beef is fairly healthy -- if it's not treated with hormones and is truly free from excess fat. The more white you see, the more fat you get.

So here is the trick for all meat-eaters out there -- choose lean meats, seek nutritious cuts of meat, avoid hormone-treated products, steer clear of processed meats (these include more additives and fats than simple cuts of pork, lamb, and beef), read labels carefully, make meat just one component of a balanced diet, and brace yourself for more research and study and discussion that will undoubtedly conclude that meat is good for us. And bad for us too.

The Lung Cancer Alliance -- the only national non-profit organization dedicated entirely to lung cancer patient support and advocacy -- asked pulmonary clinical nurse specialist Donna Wilson to help educate the lung cancer community about healthy breathing. Wilson agreed and her breathing tips, available on podcast, are intended to relieve shortness of breath related to pain or activity. Her three breathing techniques -- detailed here -- are simple, easy-to-understand, and truly relaxing.

Before beginning this series of breathing exercises, stop whatever you are doing and sit down or lean against a wall.

• Place chin to your chest to relax your neck muscles. Breathe 10 short bursts of air in and out of your lips. As you expel air, neck and chest muscles should relax.
• Place chin to your chest. Breathe three times in through your nose and out through your mouth.
• Place chin to your chest. Close your mouth, and breathe four times in and out only through your nose.
  

After completing these exercises, lift your head, breathe normally, and let your shoulders relax. In a few minutes, your entire body should start to relax -- and shortness of breath will resolve.

I don't have lung cancer -- but I do have moments of anxiety and panic. So I plan to save these tips. And I plan to use them. And I plan to share them. Because we all can benefit from a dose of relaxation.

As if the horrors of breast cancer are not enough -- surgery and recovery, chemotherapy and recovery, radiation and recovery, additional treatments and recovery -- weight gain often comes along and rounds out the full breast cancer package. It is most common for women who have chemotherapy -- the curse is not often seen for women who have surgery alone or surgery followed by radiation -- and while it may seem the lesser of all evils for some women, others may be plagued by an additional battle with weight. In addition to the self esteem blow that breast cancer delivers -- complete with scars and removal of breasts and reconstruction and hair loss -- weight gain in this body-image obsessed era can take its toll. There are also health concerns related to weight gain -- and an excess of weight is reported to sometimes influence a return of breast cancer and can be a risk factor for other cancers too.

The American Cancer Society reports that the average weight gain is five to eight pounds over a year's time -- but that gaining 25 pounds is not uncommon either. This phenomenon is somewhat of a mystery, although there are some theories about why women are at risk for this not-so-pleasant side effect of breast cancer. Some women get nauseated during chemotherapy and don't eat much -- but others have intense food cravings and tend to eat more. Body composition may also change and research shows that chemotherapy possibly diminishes lean body mass and increases fatty tissue. Menopause may also be to blame -- natural and chemically-induced menopause operate the same and both slow metabolism. So it takes more physical activity to burn what less activity accomplished prior to chemotherapy. Women experiencing treatment also tend to exercise less which can contribute to weight gain. And some women fault the Tamoxifen they take following chemotherapy -- although research does not support a strong link between the two. There are many possibilities. Yet none of them are definite. There is one definite, though -- a healthy menu, a healthy exercise routine, and a healthy support team can help women ward off this unfair consequence of an unfair disease.