CINCINNATI - The nation's largest traditional grocer is expanding organic food offerings and targeting a broader range of customers for the fast-growing segment.

The new push by Kroger Co., which was launched Wednesday, features its own brand of organic foods, from pasta to peanut butter, and displays them throughout the store, outside their usual home in natural foods sections. Starting with 65 items, Kroger expects to double its Private Selection brand organics by the end of the year.

Linda Severin, vice president for corporate brands, said marketing under the slogan "Organics for Everyone" will appeal to consumers who don't focus their shopping on organic foods but are interested in trying them. The private brand line generally will be priced lower than other organics Kroger sells.

"This responds to customers who just want to make a smarter food choice and start opening their lives to organic," Severin said. "It's a way for people to sort of put their toe in the water."

Kroger's line will carry the U.S. Department of Agriculture seal for organic foods, which are free of pesticides and hormones.

Kroger, Wal-Mart Stores Inc. and other major grocery sellers have been increasing selections of organic and natural foods in response to rising demand and the growth of chains such as Whole Foods Market Inc. and Wild Oats Markets Inc.

The Organic Trade Association says that while organic foods comprised less than 3 percent of total food sales in 2006, annual percentage sales growth in the past decade has been in the high teens into the twenties, up to $16.7 billion.

"Organics is probably the hottest thing going in the food market right now," said Ted Taft, managing director of Meridian Consulting Group. "The conventional grocery channel has seen that growth and seen that as something they need to have." He said Kroger and other large chains can offer lower prices than specialty stores and appeal to shoppers who are worried about organics for only certain items, such as milk.

"There are very few consumers that everything they have has to be organic," Taft said. "If you go to a Kroger, you have options."

Bruce Silverman, global vice president of private label for Austin, Texas-based Whole Foods, said organics have always been a Whole Foods cornerstone.

"When new competitors begin experimenting with offering organic foods, they are helping Whole Foods Market further our mission for the world to enjoy more organic and natural foods," he said in a statement.

Ronnie Cummins, national director of the Organic Consumers Association, said that while Pleasanton-Calif.-based Safeway Inc. and some regional supermarket chains have had success with organic offerings, organic advocates are wary of giant, bottom-line companies in the market.

"They're more concerned about their quarterly profits than their sustainability," Cummins said. "The organic market segment is the wave of the future, and it's not just people looking for an organic label and saying, 'Where can I get it the cheapest?'" Cummins noted approvingly that Kroger last week announced plans to begin selling milk that is certified as free of synthetic hormones.

The company, which operates 2,458 supermarkets and multi-department stores in 31 states, some under local names, also is offering gluten-free items such as crackers in its private brand, for those who want to avoid the wheat protein, and recently launched a milk brand that can help reduce cholesterol.

Kroger five years ago introduced a Naturally Preferred line of foods, which includes some organic foods and contain no artificial colours, preservatives or flavours, and many of its stores have a special section called Nature's Market.

"Customers are telling us they want more of these products," said Nancy Moon-Eilers, vice president for natural foods procurement and merchandising. "Organic growth has been really strong, and I don't see that easing up any time soon."

A new study conducted on an animal model has investigated potential links between testosterone supplements and cardiovascular and renal disease.

A team of researchers used an animal model to investigate potential links between testosterone supplements and cardiovascular and renal disease.

Three groups of rats were used: intact, gonadectomized (at eight months of age), and testosterone-supplemented rats. Testosterone supplements were administered chronically via pellets and rats were monitored until 13 months of age. Blood pressure was measured at the end of the experiment via indwelling arterial catheters inserted into conscious, freely moving rats. Urine was collected for two hours and urinary protein excretion was determined.

The researchers found that blood pressure was significantly higher in testosterone-supplemented male SHR (spontaneously hypertensive rats) as compared with intact rats, whereas castration did not alter blood pressure levels. Testosterone supplemented SHR excreted more urinary protein than intact rats, and castration reduced proteinuria (urinary protein).

The results suggest that testosterone supplementation of aging male SHR promotes renal injury and thereby exacerbates hypertension. The results also show that removal of endogenous androgens later in life (eight months) prevents the development of hypertensive renal injury without altering existing hypertension levels.

The study is part of the researchers’ ongoing project to investigate the effects of testosterone-supplementation in animal models of disease that mimic the characteristics of the human male population that currently receive testosterone supplements. They are currently testing the hypotheses that the natural decrease in testosterone brought on by aging may affect the progression of pre-existing cardiovascular/renal disease.