Jenny Craig would like for everyone to lighten up, at least a little. The weight-control company, which has provided products and services to more than 5 million clients, is one of the world's largest diet firms (along with rival Weight Watchers). It owns or franchises more than 600 centers in the US, Canada, Australia, New Zealand, Puerto Rico, the UK, France, and Guam. Its Jenny's Cuisine prepared foods, along with DVDs, CDs, journals, and cookbooks, are sold to participants at its centers. The program is also available at home through telephone consultations and home delivery of food and support materials. Swiss food giant Nestl� sold Jenny Craig in 2013 to private equity firm North Castle Partners.