
- With Mayo Clinic nutritionist
Katherine Zeratsky, R.D., L.D.
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Katherine Zeratsky, R.D., L.D.
Katherine Zeratsky, R.D., L.D.
As a specialty editor for the nutrition and healthy eating guide, Katherine Zeratsky helps you sort through the facts and figures, the fads and the hype to learn more about nutrition and diet.
A Marinette, Wis., native, Katherine is certified in dietetics by the state of Minnesota and the American Dietetic Association. She has been with Mayo Clinic since 1999.
She is active in nutrition-related curriculum and course development in wellness nutrition at Mayo Clinic in Rochester, Minn., and nutrition education related to weight management and practical applications of nutrition-related lifestyle changes.
Other areas of interest include food and nutrition for all life stages, active lifestyles and the culinary arts.
She graduated from the University of Wisconsin-Madison, served a dietetic internship at the University of Iowa Hospitals and Clinics, and worked as a registered dietitian and health risk counselor at ThedaCare of Appleton, Wis., before joining the Mayo Clinic staff.
Weight-loss basics (6)
- Metabolism: What's the best way to boost it?
- Body fat: What happens to lost fat?
- Slow metabolism: Is it to blame for weight gain?
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Diet plans (9)
- The Cookie Diet: Can it help you lose weight?
- The Special K diet: Helpful for weight loss?
- Coffee calories: Sabotaging your weight-loss goal?
- see all in Diet plans
Mayo Clinic diet (1)
- Weight loss: Better to cut calories or exercise more?
Diet and exercise (4)
- Weight loss: Better to cut calories or exercise more?
- Can I use yoga for weight loss?
- Negative calorie foods: Diet gimmick or weight-loss aid?
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Question
The Cookie Diet: Can it help you lose weight?
What is the Cookie Diet? How does it work?
Answer
from Katherine Zeratsky, R.D., L.D.
The original Cookie Diet was created in 1975 by Dr. Sanford Siegal to help his overweight patients lose weight. The Cookie Diet limits calories to no more than 1,000 a day, which come from six prepackaged cookies plus one meal, such as skinless chicken and steamed vegetables. The cookies are made and sold by Dr. Siegal's company and are said to contain a proprietary amino acid mixture that fights hunger.
If followed, a diet of less than 1,000 calories a day will likely lead to weight loss. But such a restricted diet can make it hard to meet all of your nutritional needs. In addition, it's difficult to stick with extreme diets such as the Cookie Diet. As a result, any lost pounds come right back once the diet stops.
The bottom line: To achieve and maintain a healthy weight, you need to make permanent and sustainable changes in your eating and exercise habits.
Next questionThe Special K diet: Helpful for weight loss?
- Dr. Siegal's Cookie Diet. www.cookiediet.com. Accessed Jan. 14, 2010.
- Zeratsky KA (expert opinion). Mayo Clinic, Rochester, Minn. Jan.20, 2010.

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