Red Clover Cheddar Cheese, a lovely aged cheese from Vermont, belies its name. It contains no coloring-red, yellow or anything else-and is an authentic natural cheese. It can be ordered in 3-pound pieces for $10.50 including postage. Make out check and send to Red Clover Cheddar Cheese, 2939 Van Ness St. NW, Box 326, Washington 20008.

Feeding a high protein diet to rats can cause a bone disorder similar to osteoporosis, a disease caused by calcium deficiency in the elderly, according to the Department of Agriculture.

USDA scientists fed two age groups of rats diets containing either 45 percent casein, the protein found in milk, or 25 percent casein. The young rats equivalent to preteens and teen-age humans, did not develop bone disorders when fed the 45 percent casein diet; the older rats, equivalent of humans in their 20s and 30s, did.

A diet containing 25 percent casein provides enough protein for maximum rat growth. According to the USDA scientists, the 45 percent casein diet is comparable to the amount of protein many Amercians consume, over and above the recommended dietary allowance.

The scientists said they "don't know why the bone disorder occurred," but suggested that "there are important differences in metabolism of rapidly growing and mature age groups.

The Great Amercian Nutrition Campaign will roll across the country after its kick-off ceremonies June 1 in Washington.

A "nutri-van" sponsored by the Center for Science in the Public Interest, will travel to at least 20 cities, stocked with nutritional messages via posters, displays, films and, according to CSPI, maybe even a portable greenhouse.

The purpose of the van is to help local citizenry "get junk food vending machines banned," set up a "Junk Food Hall of Shame," and generally encourage people to get out the message about nutrition and health.

Those interest in helping with the Great American Nutrition Campaign should write to CSPI, 1755 S St. NW, Washington 20009.

On the nutrition education fron t in the continuing controversy surrounding the relationship of commercial firms to nutrition education information, these two items are of interest:

Campbell Soup Co. has made a $26,000 grant to the National 4-H Council for "strengthening skills of adult volunteer leaders and effective programming for youth in the area of food and nutrition," according to a press release from 4-H.

According to the council's executive director, the five-day leadership training program, which takes place in Washington in September, "will help leaders make foods and nutrition fun for kids, identify community resources, build career opportunities into a nutrition programs, become more effective in teaching subject matter and assit members in identifying what they want to learn and how to apply what they have learned to their own lives and those of their families."

The participants will be able to pick up some of this information during a field trip to Camden, N.J., home of the Campbell Soup Co. According to the press release, the soup company plant will offer "an opportunity to study the research and operational aspects of the company, and explore career potentials in the foods industry."

A "Committee Against Textbook Commercialization" has been formed in Michigan. It's object? To prohibit the use of brand-name products, especially "junk food" items, in public school textbooks.

As reported in Community Nutrition Institute Reports, the committee has gathered 1,500 signatures on petitions to the state legislature. Janic Ronick, the committee's executive director, says the graphics of commercial products which are used "ostensibly serve as clever visual aids, (but) they easily transform attentive and impressionable pupils into captive consumer audiences."