Jenny Craig, Inc. was developed by Sidney and Genevieve Craig in the mid-1980s. The latter worked with Nurtisystem before creating the weight-loss company. The first center was created in Australia (Mr. Craig's birth country) in 1983, and they've since added centers in Canada, Puerto Rico, New Zealand and the United States, with its headquarters in La Jolla, California.

Jenny Craig's focus is not the elimination or restriction of any food group but the creation of individual weight loss plans, with one-on-one consultants. This process can be done at a Jenny Craig center if nearby, over the phone, or online, with pre-packaged food and other products delivered to your home.

A Jenny Craig commercial can be found here. The company's primary televsion spokeswomen are actresses Kirstey Alley and Valerie Bertinelli.