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Wednesday
Oct202010

Feeling Full: If What You See Isn't What You Eat

How full would you feel if you thought you were eating a big portion, but the actual amount of food was smaller than it seemed? Or if you thought you were eating a small portion, but really received a large one? Research from England suggests that feeling satisfied depends on the amount you think you're eating, and not necessarily the amount you actually consume. In an experiment, half the participants were shown a small portion of fruit to be used for a smoothie while the other half was shown a large portion. Both groups were asked how satisfying they expected the smoothie to be. Three hours later, they were asked to rate how full they felt. Those who were shown the large portion reported feeling more full, even though the smoothies they received were actually made with the smaller amount of fruit. In another test, researchers rigged up a soup bowl so that the amount of soup could be increased or decreased without the eater's awareness. Afterward, "fullness" ratings proved to be related to the remembered amount of soup in the bowl, not the actual amount consumed. The research was reported at the annual meeting of the Society for the Study of Ingestive Behavior.

My take? Large portions - the "supersize" factor - play a central role in the current obesity epidemic. Other studies have shown how easily people fall into the habit of consuming oversized portions. In one clinical trial, researchers tracked the food consumption of nearly two dozen adults for 11 days. First, they gave their volunteers standard sized servings. Then they gave them portions that were 50 percent larger. The participants consistently ate more when they were provided with more to eat. In general, research has shown that people eat more when given large portions. We’ve got to get into the habit of cutting back on portion sizes, particularly in restaurants, where you can safely assume that the portions are too big (half is plenty). Follow the serving sizes suggested in my anti-inflammatory diet for healthy and satisfying meals.

Confused about portion size? Mastering Portion Control.

Monday
Oct182010

Eat Fruit at Every Meal

Eat your veggies, but don't forget about fruit! A wide variety of fruits in your diet can provide you with the protective phytonutrients that help modulate and enhance immune function, reduce chronic/unhealthy inflammation, maintain the body's healing system, boost antioxidant defenses and more. Plus, fruit is a good source of fiber, which helps to keep your digestive system running smoothly. Start the day with some fruit salad, add berries to your cereal, eat a piece of fruit with your lunch, and make a fruit-based dessert. Choose fruits that are organic and eat a wide variety, including as many colors as you can. 

Sunday
Oct172010

More Soy, Less Lung Cancer

That's the latest word from a Japanese study that followed more than 36,000 men and 40,000 women aged 45-74 years old for about 11 years. Among the men who never smoked, the researchers from Japan's National Cancer Center found 22 cases of lung cancer in those who ate the least soy and only 13 cases in men who ate the most soy. (There were too few cases of lung cancer among the women to draw conclusions about the influence of soy.) One possible explanation for the association between soy consumption and the apparent lower risk of lung cancer in the men may be the isoflavones soy contains. These plant compounds may have protective effects in breast and prostate cancer development, and the researchers noted that cells in the lung have properties suggesting that they might respond to isoflavones. However, the investigators also said that men who eat soy may be more likely to eat other healthy foods and to engage in activities that lower lung cancer risk overall. The study didn't look at isoflavone supplement use or exposure to secondhand smoke, so more research is needed to determine how protective soy really is. The study was published online January 13, 2010 in the American Journal of Clinical Nutrition.

My take? Some traditional soy-rich Asian diets are associated with lower risks of prostate and breast cancer than Western diets, and this study suggests further benefits. Despite scare stories about the supposedly detrimental effects of soy foods, I remain convinced that eating reasonable quantities is safe and nutritious. I recommend one to two daily servings of soy in relatively whole and unrefined forms such as a cup of soy milk, a half cup of tofu, tempeh or green soybeans (edamame) or roasted soy nuts.

Saturday
Oct162010

Can Climate Change Make You Sick?

You know that it's bad for the planet, but have you ever wondered what the effect of climate change will be on human health? In July, 2008, the Environmental Protection Agency (EPA) issued a report on the impact climate change is likely to have on general health in the United States, and it doesn't paint a pretty picture. Those at greatest risk are residents of the northern states and the Midwest, where people aren't as used to heat as those in other areas of the country. Overall, the EPA's report found that as temperatures rise we may see more:

  • heat stroke
  • illness due to salmonella (due to heat-related contamination of food and water supplies)
  • drowning due to storm surges
  • heart disease because of rising ozone levels
  • severe attacks of respiratory diseases including asthma and chronic obstructive pulmonary disease (COPD) because of poor air quality due to ozone and an increase in wildfires.

The very young, the very old, the poor, and people with compromised immune systems are most likely to be hardest hit.

Another warning, issued in August, 2008, by researchers at the School of Public Health at the University of North Carolina, concerns the impact of climate change on allergy patients. Here, the problem will be earlier and longer allergy seasons with more spring pollen and increased airborne irritants in the fall. More air pollution, ozone and wildfires can also be expected to aggravate asthma, the researchers warned. The review was published in the September, 2008, issue of the Journal of Allergy and Clinical Immunology.

Here are some of the steps the EPA suggested in order to adapt to the anticipated risks:

  • Expand installation of cooling systems in residential and commercial buildings
  • Improve early warning systems for extreme heat
  • Improve infrastructure to keep water clean
  • Increased emphasis on the use of public transit, walking and biking in order to reduce vehicle emission.

The North Carolina researchers also recommended eating locally grown fruits and vegetables and eating less meat to improve health and reduce the human contribution to climate change. I see this as a good first step in breaking our dependence on fossil fuels and joining other advanced nations in pledging to reduce our carbon emissions.

We all have the responsibility to help curtail climate change - What steps have you taken personally to combat this global threat?

Friday
Oct152010

Pickled Carrots

Pickled vegetables are wonderful because they can be prepared in advance and keep well in the refrigerator. These pickled carrots are like an Italian antipasto. In fact, they can be used as a vegetable, salad or appetizer. Pair them with a mild-flavored entrée like Potato-Rosemary Crusted Fish. Round out the colors on the plate with sautéed greens. If you like the recipe, try the same pickling marinade for other vegetables like zucchini or cauliflower.

Ingredients:

3 cloves garlic, minced
1 tablespoon onion, coarsely chopped
3 tablespoons extra-virgin olive oil
1/4 cup wine vinegar
1/2 teaspoon dry mustard powder
1 tablespoon whole mixed pickling spices, tied in cheesecloth
Salt and black pepper to taste
1 pound carrots, peeled and cut into matchsticks
1 small onion, thinly sliced

Instructions:

1. Sauté the garlic and chopped onion in the olive oil in a skillet until just tender, about 5 minutes. 

2. Stir in the wine vinegar, dry mustard, pickling spices, salt, pepper, and carrots. Cover and simmer for 5 minutes. The carrots should still be crunchy. Remove from heat. 

3. Remove the cheesecloth with the spices. Transfer the carrot mixture to a shallow dish. Top with the thinly sliced onion. Cover and refrigerate until served, stirring occasionally. 

Food as Medicine: Carrots are a rich source of beta-carotene, which offers numerous health benefits. Beta-carotene is particularly helpful in preserving night vision - the compound is converted to vitamin A in the liver; then it travels to the eye and is converted to rhodopsin, a pigment that is essential for low-light vision.

Thursday
Oct142010

Cinnamon Extracts and Heart Disease, Diabetes Risk

Two daily doses of a dried water-soluble cinnamon extract seemed to lower the risk factors for heart disease and diabetes in a small study led by a U.S. Department of Agriculture chemist. The research team found that the daily doses of the cinnamon extract improved the antioxidant status of the volunteers, a group of obese men and women, and also seemed to decrease their fasting blood sugar (glucose) levels. For this small, 12-week study, the researchers randomly divided their 22 participants into two groups. Participants in one group received 250 mg of cinnamon extract twice a day along with their usual diets; those in the other group were given a placebo. Investigators collected blood from all the volunteers after an overnight fast at the beginning of the study, again after six weeks and at the end of the 12 weeks. The positive changes seen in the lab values of the cinnamon group suggest a benefit in reducing risk of both diabetes and cardiac disease. We'll need more and larger studies to tell us if cinnamon really does help. But in the meantime, if you're at risk, the most important thing you can do for your health is lose weight.

Wednesday
Oct132010

A Shot for Stress

Don’t give up on meditation, relaxation and yoga just yet - you’ll still need them to help deal with stress in the foreseeable future, but a Stanford University researcher is at work on a vaccine to counteract some of the most damaging effects of stress, particularly the chronic type associated with cardiovascular disease, cancer and a depressed immune system. The vaccine works on rats, but remains years away from human studies. The idea is to neutralize the glucocorticoid hormones our bodies produce when we're stressed before they can cause their damaging effects. These hormones are part of the immune system and also help us fight off cancer and inflammation, but because we can’t turn them on and off selectively, they can become harmful to the brain and the immune system following simple stress. The investigator, Robert Sapolsky, Ph.D., a professor of neuroscience, has adapted a herpes virus to carry engineered neuroprotective genes into the brain to neutralize stress hormones and leave you feeling fresh and prepared for the next threat.

As this vaccine is not yet an option, learn more about stress and how to manage it more effectively on a daily basis using natural methods.

Tuesday
Oct122010

Eat Vegetable-Based Meals Often

Last Friday's healthy diet resolution was to replace more animal foods with vegetable protein. While I strongly encourage that you do eat more beans and whole soy products, remember that meals don't have to be built around proteins - vegetables are another great option. Vegetable soups, casseroles, salads, chili, sandwiches, stews, kabobs, pasta sauces - the list of veggie-friendly meals goes on and on. Meals that are meat-based can almost always be tweaked to become meat-free or heavier on vegetables than meat. Again, opt for organic produce and eat a variety of colors.

Vegetables, at the base of my Anti-Inflammatory Food Pyramid, should be the most-consumed food group in your diet. 4-5 servings is the minimum: Eat as many phytochemical-rich servings as you want!