November 22, 2009
- Portland, Oregon
Bionic Foods
Bionic Foods
Elizabeth Somer, M.A.,R.D. Forget the pharmacy. Now you can boost brain power with chewing gum. Curb depression with potato chips. Lower heart-disease with salad dressing. Strengthen bones with orange juice. Even get your vegetables in candy. Welcome to functional foods, the latest trend to hit your supermarket. Here to help us sift fact from fiction is Elizabeth Somer, registered dietitian and author of The Food & Mood Cookbook. 1) What is a functional food? A functional food is any food or food component that provides a health benefit beyond traditional nutrients it contains. Calcium-fortified orange juice qualifies is a functional food because calcium is not found naturally in this food, but calcium-rich yogurt doesnt Other examples include:
2) It sounds like a great idea to get your calcium from soft drinks. Why should we be concerned about these new bionic foods? Functional foods are as controversial as they are profitable. FDA has yet to impose guidelines on these new items, allowing manufacturers free-reign and few restrictions. The impressive health claims attached to these products also blur the line between food and medicine. Scientifically, herbs are drugs, so to add them to processed foods makes as much sense as adding aspirin to soup or diazepam to potato chips. On the other hand, some functional foods could improve your diet and health. 3) You say there are four (4) questions to ask when sifting hype from health in the realm of bionic or functional foods. What are they? #1 Does It Do the Job? A wealth of evidence supports adding calcium to orange juice to prevent bone loss or folic acid to grains to prevent birth defects. Theres also reason to find alternative sources of omega-3 fatty acids, fats shown to lower heart-disease risk but found primarily in seafood. But what about ginseng added to a fruit juice smoothie that then claims it will jump start your day or a snack bar with gingko promising to boost mental function? The research on many of the herbs added to functional foods is sketchy at best, and even then are only useful for people with serious health conditions. Theres no evidence that these herbs help healthy people with routine forgetfulness or fatigue. #2 What Are You Getting? Even if a functional food contains beneficial ingredients, does it supply enough to do the job? Foods fortified with vitamins and minerals, such as milk with vitamin D, must list amounts on the label. Thats not the case with phytochemicals or herbs. You dont get a therapeutic dose of any herb in any product Im aware of. Often were not told how much is in the food and even the manufacturer doesnt know. No telling the form used (leaves, extract, stems?), if it is standardized, or how it was processed. The same concerns go for phytochemicals, the thousands of non-nutrients in plants that lower our risk for disease and boost immunity. Even if stated, no one knows optimal doses for lycopene, the sulfur compounds from garlic, or any of the other 12,000 phytochemicals. Most people dont know when an herbal dose is too much or too little. For example, Balance+ Food Bars with Ginkgo Biloba supply 20 milligrams of the herb. How many people snacking on this bar know that it would take six of them, for a total of 1,200 calories, to get an effective dose of the herb? These companies counter by saying their products are meant to supplement a consumers regular supplements, not to supply an entire days requirement. But adding up the dosages from drinks, foods, and supplements makes it difficult to keep tract of how much youre taking. To be on the safe side, avoid any product that doesnt list how much of the herb or active ingredient is in each serving. #3 Is It Safe? Some experts argue that tinkering with uncharted food territories is blindly messing with a good thing. We know so little about optimal doses, interactions, or long-term consequences of most phytochemicals and herbs that to begin adding them haphazardly into foods could produce any number of potential toxic effects. Beta carotene taught us the importance of whole foods over single components. For years, studies showed a diet high in beta carotene-rich foods reduced cancer risk. So supplement and food companies added this phytochemical to supplements and cereals. Subsequent studies using beta carotene supplements found that at best beta carotene had no effect and might even raise cancer risk in smokers. When it comes to herbs, you shouldnt take them lightly. Herbs are drugs and like other drugs, they can have side effects or can interact with other medications. St. Johns Wort should not be taken with anti-depressant drugs, kava kava might interact with anti-anxiety medications, and echinacea produces allergic reactions in some people. Its also a crapshoot whether or not youll know the functional food is harming your health. Its relatively easy to identify harmful side effects from medications, but how will we make the connection between symptoms like heart palpitations or headaches and a varied diet that contains a functional food. #4 It Glitters. Does That Mean Its Gold? We have an age-old belief that foods have medicinal properties, which explains why 9 out of 10 people believe that certain foods have health benefits beyond just basic nutrition. That must be the reason were willing to wolf down nutrient-fortified snack bars that taste like sweetened dog chow or herb-laced cereal with the texture of cardboard under the guise that theyre good for us. You dont see Mother Natures functional foods, like broccoli or strawberries, touted as mood boosters and energizers at the supermarket. Its the processed items, in many cases gilded junk food, that are fortified with a handful of nutrients to create the false impression of a product that is somehow valuable. For example,
Since when did sugar-laden products become health foods? Fortified or not, these products are not as nutritious as wholesome real food. Then there are down right ridiculous products. For example,
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