F&N Digest
Extension Foods and Nutrition, K-State Research and Extension, Kansas State University

January/February 1997

What's New
Extension Foods and Nutrition has New Web Address
1996 Nutrition Motivation Contest
Food Safety
Factors in Emergence of Diseases
Red No. 3 and Breast Cancer
FDA Reaffirms Nutraweet Safety
Limited Resource
Time Limit for Food Stamps
Federal Gleaning Initiative
Healthy Food Preparation
Modified Recipe: Potato Florentine Strata
You Asked It!
You Asked It! -- Rapid Response Center Q/A
Nutrition/Health
Blue Green Algae or Any Algae Super Food or Super Hype?
Who to Believe?
High Protein Dieting
The Myth of Combining Foods Properly
National Birth Statistics Improving
Nutrition During Pregnancy Impacts Child's Health Later in Life
Early Exposure to Cow's Milk Not Linked to Diabetes in Children
Resources
Calendar Available


Extension Foods and Nutrition has New Web Address
Please make note of our new World Wide Web Address it is: http://www.oznet.ksu.edu/humannutrition (RB)


1996 Nutrition Motivation Contest
It's time to prepare your entries for the Sixth annual Kansas Nutrition Council Nutrition Motivation Contest. We want to know how you motivate children, teens or adults to make positive diet changes! A $100 cash prize will be awarded to the winner.

All programs must originate at the community level, no nationwide or statewide programs are eligible. You do not have to be a member of the Kansas Nutrition Council to submit an entry.
The Kansas Nutrition Council, an affiliate of the Society for Nutrition Education, is a networking group of agencies and professionals, including dietitians, home economists, dietary managers, teachers, nurses, school food service managers and child care providers, who work with food related issues within Kansas.

All entries are due February 1, 1997. Winners will be notified in late February and awards will be presented at the KNC Conference March 14, 1997.

For more information about the contest criteria, rules and how to enter please contact Linda Walter, Finney County Extension Office, PO Box 478, Garden City, KS 67846. (316) 272-3670.



Factors in Emergence of Diseases
The July, 1996 issue of Environmental Health Perspectives, the journal of the National Institute of Environmental Health Sciences, contains an article that explains why factors including dietary changes and the globalization of the food supply, may play a role in the emergence of diseases.
It reports that, since 1973, twenty-nine diseases and microbes have surfaced. Several factors were given as the means by which diseases grow and spread to new places. These factors included land use changes, high-speed, long-range transportation, and pesticide resistance among disease bearing insects.

An example given focused on a massive cholera epidemic in Peru in 1991. Some scientists believe that this resulted from the discharge of ballast water infected with the organism Vibrio cholerae.
Another example was the outbreak in 1993 of gastrointestinal disease caused by the parasite Cryptosporidium in Milwaukee drinking water. Suggested causes of this outbreak are agricultural runoff, human sewage, and even changes in water temperature or wind velocity, the article reports.

A recently identified and highly toxic organism, Pfiesteria piscicida, which is the cause of the increased reports of shellfish poisoning, may have been helped by global warming and farm runoff. This organism is the source of what are called "red tides."

Concern for various changes is also aimed at some of the genetically engineered crops that are appearing. The Environmental Health Perspectives article also notes that while these crops may resist pests and reduce the use of chemical pesticides, there is some concern that such changes might also transfer undesirable traits to neighboring plants.

The ability of microbes to change is reported as another factor in the emergence of disease. E. coli bacteria are showing increasing resistance to antibiotics, the article states. It is noted that people can be sickened by E. coli contamination of the environment (such as swimming lakes) as well as contamination of food.

On the food side, factors that influenced the emergence of disease were changes in food production, such as the globalization of food supplies, and changes in food processing and packaging. The lack of food in some parts of the world which results in nutritional deficiencies may also be a factor. According to the article such deficiencies may cause viruses to mutate and become more virulent among malnourished populations. (KP)

Source: Electronic Food Rap, CFS Purdue University, 6 (44) 1996.


Red No. 3 and Breast Cancer
Consumption of the food colorant Red No. 3 in processed foods may damage cell DNA and encourage cell growth, contributing to the risk of breast cancer in humans, according to research to be published in March 1997 in Environmental Health Perspectives, the journal of the National Institute of Environmental Health Sciences. Investigators studied the ability of food colorants to stimulate growth in estrogen-positive and estrogen-negative cells in an artificial cell culture (in vitro) and examined the extent to which dye-treated cells bound to cellular DNA. Food dyes that mimic the effects of estrogen, are called xenoestrogens.

The authors suggested that previous studies that associated increased breast cancer with high fat foods may actually be showing a correlation between breast cancer and the presence of xenoestrogenic food additives like Red No. 3.

"The greatest risk associated with exposure to xenoestrogens would occur during the period from early childhood through puberty, a period in which the highest consumption of Red No. 3 occurs," the researchers wrote.

The researchers concluded that whole animal (in vivo) studies are needed to determine if similar effects occur in animals that were found in the cell cultures. (KP)

Source: IFT Science Communications Nov. 13, 1996 citing: Dees et al 1997. Estrogenic and DNA-damaging activity of Red No. 3 in human breast cancer cells. Environmental Health Perspectives in press.


FDA Reaffirms Nutrasweet Safety
The safety of aspartame, the artificial sweetener commonly known as Nutrasweet, has been called into question recently due to information from a published medical journal article which raised the question about an increase in the incidence of the number of persons with brain tumors in the United States. The FDA approved use of aspartame as a tabletop sweetener and in dry foods in 1981 and in carbonated beverages in 1983. During the 1980s it was approved for additional applications, and today it is approved for use in more than 150 food product categories.

The FDA stands behind its original approval decision, but the Agency remains ready to act if credible scientific evidence is presented to it --as would be the case for any product approved by the FDA.

Discovered by accident in a chemistry lab in 1965, aspartame is a food additive made by joining two amino acids, aspartic acid and phenylalanine. Like sugar and other proteins, it provides 4 calories per gram. However, because it's 180 times sweeter than sugar, it adds little in the way of calories to foods.

According to the FDA, analysis of the National Cancer Institute's public database on cancer incidence in the United States does not support an association between the use of aspartame and increased incidence of brain tumors. Data from this database show that overall incidence of brain and central nervous system cancers began increasing in 1973 and continued to increase through 1985 in the United States. Since 1985 the trend line has flattened for these cancers, and in the last two years recorded (1991 to 1993), the incidence has slightly decreased.

The question of a relationship between brain tumors and aspartame was initially raised when the FDA began considering approval of this food additive in the mid-1970s. A Public Board of Inquiry (PBOI) was convened in 1980 by the FDA to review the scientific data presented by G.D. Searle and Company relating to the safety of aspartame. These independent scientific advisors to the FDA concluded that aspartame did not cause brain damage. At the same time, they said that there was not sufficient scientific evidence presented to the PBOI that aspartame did not cause brain tumors in rats. Therefore, the PBOI recommended against approval of aspartame at that time and concluded that further study was needed.

In 1981 after extensive review of the record by FDA scientists, then FDA Commissioner Arthur Hull Hayes approved aspartame as a food additive. In his decision Hayes noted that additional scientific data from a Japanese study about the brain tumor issue corroborated his decision. The PBOI chairman later wrote in a letter to Hayes that the Japanese data would have
caused that panel to give aspartame an "unqualified approval." (RB)




Time Limit for Food Stamps
One million adults were notified in November that they are at risk of becoming ineligible for food stamps. Under the new welfare law, certain adults who are unemployed will lose their benefits in March.

Able-bodied people between the ages of 18 and 50 with no dependent children are subject to the food stamp cutoff. Recipients can receive food stamps for three months in any 36 month period. After that, they must work at least 20 hours a week or participate in certain kinds of employment programs to qualify. The Congressional Budget Office estimates this provision will affect approximately one million people.

States having unemployment rates over 10% or having a "labor surplus" may be eligible for a waiver from the USDA. To date, Louisiana, New Jersey and Virginia have requested waivers. USDA expects most states to request waivers for about one year. (MP)

Source: CNI November 22, 1996


Federal Gleaning Initiative
A recent Congressional report indicated that 49 million people could use food discarded by cafeterias, grocery stores, and restaurants.

President Clinton has ordered federal agencies to donate surplus food to hungry Americans and to collaborate with contractors and state and local governments to increase the nation's gleaning efforts. Clinton also encouraged all Americans to personally take part in food recovery efforts.

Secretary Glickman of USDA will head an interagency work with representatives from all federal agencies to implement this initiative. Each agency must designate a food recovery coordinator.

To receive a guidebook describing how to get involved in food recovery in your area, call 1-800 GLEAN-IT. (MP)

Source: CNI November 29, 1996



Modified Recipe: Potato Florentine Strata
Potato Florentine Strata (Original)
1 (26 oz.) pkg. frozen country style hash browns, thawed
1 medium onion, minced (1 cup)
2 tsp. salt
3/4 tsp. pepper
2 tbsp. melted butter
3 cups half-and-half
6 eggs, slightly beaten
3/4 tsp. herbs
3 cups finely shredded colby and Monterey Jack cheese
1 (10 oz.) pkg. frozen chopped spinach, thawed, completely drained
1/2 cup marinated sun-dried tomatoes, drained, chopped

Press hash browns with paper towels to absorb moisture. In large bowl, combine hash browns, 1/2 cup onion, 1/2 tsp. salt and 1/4 tsp. pepper. Spray 9x13" glass baking dish with olive oil flavored no stick cooking spray; press potato mixture into bottom. Spray lightly with olive oil flavored no stick cooking spray. Bake in a preheated 425 degree oven until lightly browned around edges (20-25 min.). In large bowl, whisk together half-and-half, eggs, remaining salt, herbs and pepper. Stir in cheeses, spinach, remaining 1/2 cup onion and tomatoes. Pour mixture over potato crust. Bake, uncovered, in a preheated 350 degree oven until center is set (40-45 min.). Let stand, covered, 10 min.; cut into squares. Serves 10.

Potato Florentine Strata (Modified)
1 (26 oz.) pkg. frozen country style hash browns, thawed
1 medium onion, minced (1 cup), divided
1 tsp. salt
3/4 tsp. pepper
2 (12 oz.) cans evaporated skimmed milk
1 1/2 cups Egg Beaters, thawed
1 tsp. herbs
1 cup shredded 1/3 less fat sharp Cheddar cheese
1 cup shredded 1/3 less fat Monterey Jack cheese
1 (10 oz.) pkg. frozen chopped spinach, thawed, completely drained
1/2 cup marinated sun-dried tomatoes, drained, chopped

Press hash browns with paper towels to absorb moisture. In large bowl, combine hash browns, 1/2 cup onion, 1/2 tsp. salt and 1/4 tsp. pepper. Spray 9x13" glass baking dish with olive oil flavored no stick cooking spray; press potato mixture into bottom. Spray lightly with olive oil flavored no stick cooking spray. Bake in a preheated 425 degree oven until lightly browned around edges (20-25 min.). In large bowl, whisk together evaporated milk, Egg Beaters, 1/2 tsp. salt, herbs and 1/2 tsp. pepper. Stir in cheeses, spinach, remaining 1/2 cup onion and tomatoes. Pour mixture over potato crust. Bake, uncovered, in a preheated 350 degree oven until center is set (40 45 min.). Let stand, covered, 10 min.; cut into squares. Serves 10. (RB)

Nutrition per Serving:

  Strata (Original) Strata (Modified)
Calories:

357

205

Fat:

23 g.

4 g.

Cholesterol:

187 mg.

8 mg.

Sodium:

792 mg.

460 mg.

Percent Calories From Fat

59%

16%



You Asked It--Rapid Response Center Q & A
Q. What are good sources of information for people who are allergic to milk and gluten?
A. Try the following books: "The Gluten Free Gourmet", and "The Milk free Kitchen".

Q. What is xanthan gum?
A. Xanthan gum is a food additive that is obtained by microbial fermentation of an organism and can be considered a natural product. It is used as a thickener in salad dressings, sauces, desserts, baked goods, and beverages. The main advantage is that the thickness of products with xanthan gum resist changes over wide temperature ranges.

Q. What is the proper amount of Clearjel to use as a thickener in recipes?
A. Use Clearjel to replace cornstarch on a one to one basis.

Q. Can you use regular cake recipes in a child's "Easy Bake Oven?"
A. No, the heat source for an "Easy Bake Oven" is a 100 Watt light bulb, so only use the packaged mixes designed for the toy.

Q. Can I make "creme fresh" at home?
A. "Creme Fresh" (also crème fraîche [krehm FRESH]) is a matured, thickened cream that has a slightly tangy, nutty flavor and velvety rich texture. The thickness of crème fraîche can range from that of commercial sour cream to almost as solid as room-temperature margarine. To make at home, combine 1 cup whipping cream and 2 tablespoons buttermilk in a glass container. Cover and let stand at room temperature (about 70 F) from 8 to 24 hours, or until very thick. Stir well before covering and refrigerate up to 10 days.

Q. Will vinegar freeze?
A. Yes. Water freezes at 32 F. Vinegar will freeze at a lower temperature than water because it has acetic acid dissolved in it. The average freezing temperature for vinegar should be around 26 F. It may be a little higher or a little lower depending on the exact concentration of acetic acid.

Q. I have a recipe that calls for alum-free baking powder. What does that mean?
A. Single acting baking powder does not contain alum while double acting baking powder does.

Q. Why does "bread machine yeast" contain ascorbic acid (vitamin C)?
A. Ascorbic acid acts as a dough conditioner to improve dough quality. However, the optimal amount needed is very small and usually would not be able to be measured properly at home, so manufacturer's have put it in the yeast for convenience.

Q. Are decorative gourds edible?
A. Yes, but some have very strong flavors, especially bitter flavors, so cook a small piece first to make sure you like the flavor. Also, because of the small size and lack of meatiness of some of the decorative gourds, other squashes such as acorn or butternut are more desirable for eating.

Q. Can potato flour be substituted for wheat flour in recipes?
A. First of all, see number 1 above. The answer is maybe. If the flour is used for thickening a sauce, then it can be substituted, but if it is to be used in a baked product, then it cannot be substituted. Wheat flour contains gluten which gives baked-goods structure. Potato flour does not contain gluten. (RB)



Blue Green Algae or Any Algae Super Food or Super Hype?
Blue Green Algae--commonly known as pond scum by our elders--fast is becoming a popular product among network marketers.

The algae often is marketed as "a wild-crafted food that contains all the essential nutrients required by humans" and "the foundational food for all life on earth."

Algaes have been with us for a very long time. They are one-celled plants that grow on ponds everywhere and in man-made environments. Examples include true algaes, such as those from the Chlorella species, and Cyanobacteria, such as Spirulina and Aphanizomenon flos-aquae.

The Super Blue Green(tm) algae being heavily marketed today by independent distributors is a cyanobacteria harvested from the Upper Klamath Lake in southern Oregon. The lake itself is very alkaline and has a high mineral concentration, due to a volcanic eruption that occurred about 7,000 years ago. Because of this, the algae that survive on the pond are quite hearty.

What are the advantages and disadvantages of Super Blue Green(tm) algae or any type of algae? If we were living on the moonscape of a volcanic land, they would be a life saver. Why? Because they grow in brackish water on non-fertile land and yield a good amount of protein, vitamins, and minerals for their size.

Since we thankfully don't, do we need algaes in our lives? As single celled plants, most algaes, including Super Blue Green(tm) algae are rich in vitamin B-12, carotene, and some amino acids and fatty acids. The protein quality of algae tends to be higher than other vegetable sources, but lower than animal sources.

The major concerns are cost and the potential for toxic components. Super Blue Green(tm) algae, like most other products sold via network marketing schemes, is not cheap. If you feel you need a vitamin-mineral supplement, your dollar will go much further with a generic product at the grocery store.

Also, toxic compounds, such as aphantoxin, are known to be produced by some algaes. According to Robert Kay, vice president of research and development at Cell Tech, the manufacturer of Super Blue Green(tm) algae, this currently is not a problem with algae being produced in the Upper Klamath Lake region, though he's not sure why.

For most of us the preferred way to get chlorophyll is from carrots, broccoli, and salad greens. (RB)

Source: Pat Kendall, Ph.D., R.D., Food Science and Human Nutrition Specialist, Colorado State University Cooperative Extension


Who to Believe?
When it comes to nutrition, perhaps you, too, are wondering who to believe. An organization called the Food and Nutrition Science Alliance (FANSA) has been formed to warn consumers about "junk science." FANSA has issued 10 Red Flags of Junk Science.
They are:

1. Recommendations that promise a quick fix.
2. Dire warnings of danger from a single product or regimen.
3. Claims that sound too good to be true.
4. Simplistic conclusions drawn from a complex study.
5. Recommendations based on a single study.
6. Dramatic statements that are refuted by reputable scientific organizations.
7. List of "good" and "bad" foods.
8. Recommendations made to help sell a product.
9. Recommendations based on studies published without peer review.
10. Recommendations from studies that ignore differences among individuals or groups.

These "Flags" are all good guidelines put out by reputable, science-based, credible organizations. The FANSA coalition represents the American Dietetic Association (ADA), The American Institute of Nutrition (AIN), The American Society for Clinical Nutrition (ASCN), and the Institute of Food Technologists (IFT). These organizations all have codes of ethics for their members, their members' research must pass peer review before it is published in credible, science-based journals, and they have a long history of promoting high standards.

Several popular magazines printed FANSA's warning signs almost verbatim. That's good. Certainly consumers are being mightily confused by the on-again, off-again nature of much of the food and nutrition news that gets into the press via radio, newspapers, television, magazines and books. Communication experts have been targeted as being responsible for the current state of confusion.

Now another Pandora's box has been opened with many people bypassing traditional sources and turning to Internet and World Wide Web (WWW) to get their information . There are no standards for what gets put on the Web. It's clearly a consumer-beware situation. Such guidelines as FANSA can help consumers make some judgments about accuracy and applicability to their situations.

Yet there is another side to this story. Many of the sources of the information quoted by journalists appear to be credible and these communicators are refusing to shoulder all of the criticism. They think that the scientific community must also admit to some of its shortcomings and do more to help clear up the confusion. But that's another article.

In the meantime, you can learn more about the current state of affairs and judge for yourself by reading "FANSA Meets the Press" by Kristen McNutt, Ph.D.., J.D. in Nutrition Today, volume 31, number 3, May/June 1996, pages 123-126 or you can wait until the next issue of Food and Nutrition Digest when I'll report the charges being leveled at scientists and others involved in the flow of nutrition information to the public. (MC)


High Protein Dieting
If phone calls and mail are any indication, nutrition scam artists are hard at work and more sophisticated than ever. The old perennial, "easy" weight loss schemes have plenty of takers.

Earlier this year there was much ado about high protein, low carbohydrate wonders. Two books in particular have been best sellers: Barry Sears' The Zone and the Eadeses' Protein Power. The Eadeses are a husband and wife team of physicians. While there is a small kernel of truth behind some of their reasoning, it's primarily science fiction.

Sears claims, for example, that Americans are fatter because they eat less fat... that it is carbohydrate and more insulin that causes obesity. However, research points to more calories and inactivity as the culprits. There is no good evidence that high blood insulin levels makes you fat. Another claim is that calories don't count...protein does. The reasoning centers on eicosanoids, hormones having to do with inflammation, the blood's tendency to clot and the immune system. Sears blames insulin for the heart disease, cancer and autoimmune diseases like arthritis and multiple sclerosis we have. Gerald Reaven, a recognized authority on carbohydrate and insulin says "I am unaware of any evidence that changes in insulin have an effect on eicosanoids, and that eicosanoids cause everything from cancer to PMS." Furthermore, he points out that protein eaten alone will raise insulin levels. Reaven points out that we need more study of all these relationships. The truth is that the Zone diet actually cuts calories to about 1700 per day as well as recommending low-fat protein foods.

The Eades book, on the other hand, says that it is fine to eat steak, pork ribs, etc., as long as you don't load up on starch and sugar at the same time. This advice flies in the face of all we know about high saturated fat diets and health.

This particular kind of diet gets recycled regularly under a variety of guises. Twenty-five years ago, the best-seller, Dr. Atkins' Diet Revolution, promoted the high protein idea. Other diet books on the same principle were Taller's Calories Don't Count in 1961, Stillman's The Doctor's Quick Weight Loss Diet in 1967, and Jameson and Williams's The Drinking Man's Diet in 1964. The first such published diet may have been Banting's Letter on Corpulence, Addressed to the Public published in 1863.

Their principle claims for fast weight loss rest on changing the physiological balance so that the body excretes more ketones left over from incomplete fat-burning or in somehow circumventing the therodynamics law that you can neither create nor destroy energy. In a closed system, you can only change its form. What usually happens is that the weight loss is due to eating fewer calories and using the protein in muscle tissue for energy. Sodium and water can be retained temporarily or be lost producing dehydration. It is dangerous to deplete your body's water content and become dehydrated, putting you at risk of a medical emergency. In the long run, you have not helped your body. When you resume eating normally, you rapidly regain lost weight.

Anyway you look at it, more energy must be expended than consumed for weight loss to occur. The bottom line is: It takes using up thirty-five hundred fat calories to lose a pound of fat. (MC)

Sources: Nutrition Action Health letter, Carbo-Phobia, Zoning out on the new diet books. July/August 1996, pp. 3-6. Tufts University Diet & Nutrition Letter, Entering a high-protein twilight zone, Special Report. May 1996, pp. 4-6. Council on Foods and Nutrition. Journal of the American Medical Association, A Critique of Low-Carbohydrate Ketogenic Weight Reduction Regimens, A review of Dr. Atkins' Diet Revolution. 224(10), June 4, 1973.



The Myth of Combining Foods Properly
A myth that never dies is the myth of food combining, that is, it's important to eat foods in the right combinations. One such taboo is eating carbohydrates such as starch or sugar in the same meal as high protein foods. Furthermore, it is better to eat fruits raw and alone because otherwise they will "ferment and turn toxic in the stomach." This kind of nonsense works best with people who have little idea of what constitutes food and how their bodies work. Food chemistry and composition are a mystery to them. They don't understand how a common food like bread is a combination of starch, protein, a number of minerals and vitamins including most of the B vitamins. If you eat the whole grain (the brown wheat kernel with the germ that can sprout), you'll also get considerable fiber from the outer brown layers and some fat and vitamin E from the germ. Other ingredients in bread usually include some sugar, fat, and salt. Thus foods are combinations of nutrients and many other natural chemicals.

Overwhelming evidence is on the side of a varied, balanced diet. It turns out that a combination of nutrients and other food components can often improve absorption. For example, the vitamin C in the breakfast orange juice can enhance the absorption of the iron in cereals. Variety aids digestion rather than making it more difficult. It also makes a meal more appetizing. (MC)

Source: UC Berkeley Wellness Letter, April 1996, p. 6,7.


National Birth Statistics Improving
A new report issued by the US Department of Health and Human Services indicates a decline in the rate of teen and out-of-wedlock births in 1995. The birth rate for teens has declined for the fourth straight year, falling from 58.9 (in 1994) to 56.9 births per 1,000 women aged 15 to 19. This was true over all racial groups, but especially for black teens where the rate fell from 104.5 to 95.5 births per 1,000. The rate of births to unwed women went down for the first time in 20 years. Birth rate for unmarried women aged 15 to 44 declined from 46.9 in 1994 to 44.9 per 1,000 in 1995.

In addition, more women are seeking prenatal care in their first trimester. The percentage is up from 80.2 percent in 1994 to 81.2 percent in 1995. The proportion rose among blacks (70.3%), Hispanics (70.4%), and whites (83.5%). The incidence of low birth weight has not changed, but infant mortality has fallen six percent, from 8 to 7.5 infant deaths per 1,000 live births. This is a record low infant mortality rate for the United States. (PP)

Source: Monthly Vital Statistics Report: Births and Deaths: United States, 1995.


Nutrition During Pregnancy Impacts Child's Health Later in Life
A review of more than two dozen studies from several countries and with all socioeconomic classes shows that what and how much a pregnant woman eats can set the stage for serious health problems for her child's future. Babies who weigh less than 5.5 pounds at birth have a 35% higher rate of death from heart disease later in life and are six times more likely to develop diabetes. Women who were born weighing less than 5.5 pounds are 43% more likely to develop hypertension.

Of course, there are many factors that lead to health problems, but these researchers believe that prenatal nutrition has a far greater impact on health than was previously thought. Timing of a nutritional disruption impacts the organ system that is developing in the fetus at the time of the disruption. For example, poor nutrition during late pregnancy disrupts the liver's ability to regulate cholesterol metabolism and blood clotting. Both of these factors can contribute to heart disease. (PP)

Sources: New York Times; October 1, 1996, as reported by Community Nutrition Institute, Nutrition Week, November 8, 1996. Circulation, Vol. 94, No. 6; September 15, 1996, pp. 1310 1315.


Early Exposure to Cow's Milk Not Linked to Diabetes in Children
About one in 300 American children will develop insulin-dependent diabetes (IDDM). Genetics has been linked with risk of diabetes, but only about 5% of those with the identified "diabetic genes" will ever become diabetic. One hypothesis that has been proposed is that early exposure to dietary antigens, specifically cow's milk, in children who are genetically predisposed to diabetes could cause IDDM. Research published in the August 28, 1996 issue of the Journal of the American Medical Association suggests that this concern about cow's milk and diabetes in children is not justified.

This group of researchers studied 253 children (ages 9 months to 7 years) from 171 families with IDDM to looked for subclinical evidence of the beginnings of IDDM. They looked for beta-cell autoimmunity (BCA), which was described as elevated levels of insulin autoantibody, glutamic acid decarboxylase autoantibody, or insulinoma-associated islet tyrosine phosphatases autoantibody (IA-1) above the 99th percentile of 198 normal subjects.

Of the 253 children, 18 were identified with BCA. The researchers then selected 153 of the rest of the children to act as controls. These children had no evidence of BCA and were not related to the BCA children.

According to the researchers, "there were no differences in the proportion of cases and controls who were exposed to cow's milk or foods containing cow's milk or to cereal, fruit and vegetable or meat protein by 3 months or by 6 months of age". "These data suggest that early exposure to cow's milk or other dietary protein is not associated with BCA. This calls into question the importance of cow's milk avoidance as a preventive measure for IDDM."

The researchers noted that although their results "are valid for close relatives of IDDM patients, their 'generalizability' to the general population is less obvious. The genetic and environmental risk factors that interact in the etiology of IDDM appear to be the same in relatives and in 'sporadic' cases from the general population."

Cow's milk provides valuable nutrients for young children and is a important part of their diet. It should not be excluded from the diet of a child unless absolutely necessary. This study indicates that it is not necessary to avoid cow's milk for children who are at risk for IDDM. (PP)

Source: Journal of the American Medical Association, August 28, 1996, vol. 276, no. 8, pp. 609 614.


Calendar Available
Melinda Hemmelgarn from the University of Missouri has put together an excellent calendar of Nutrition and Health Related observances. For a free copy, contact Shelly at (913) 532-1670 or email your request to her at sburklun@ksu.edu. (RB)


K-State Research and Extension is a short name for the Kansas State University Agricultural Experiment Station and Cooperative Extension Service, a program designed to generate and distribute useful knowledge for the well-being of Kansans. Supported by county, state, federal and private funds, the program has county Extension offices, experiment fields, area Extension offices and regional research centers statewide. Its headquarters is on the K-State campus, Manhattan.