Transcript Myth Busters Guide to Fad Diets

Myth Busters Guide to
Fad Diets
Ryan Summerford
SPH Nutrition Student
Fad Diets
Composition of Food
Carbohydrates:
Fruits, pasta, bread, rice, vegetables
Glycemic Index
Diets:
Dr. Phil, Atkins
The Zone, South Beach
Weight Watchers, Raw Foods
Dr. Phil
 Concept:
 Permanent weight maintenance
through behavior change.
 Strategy:
 Seven Keys to weight loss centered
around CONTROL!
 Objective:
 Realistic and Measurable Goals
 Weakness:
 Outdated nutritional information
 Complex emotional issues through
simple solutions.
The “New” Atkins Diet
 Concept:
Alter the body’s metabolism to burn
fat while building muscle mass.
 Strategy:
Restricts carbs with focus on protein.
Vitamin/ mineral supplementation.
 Weakness:
Initial phase: only 20g CHO per day.
THE ZONE
 Concept:
 Balanced nutritional approach.
 DIET:
40% Carbohydrates
30% Fat
30% Protein
 Objective:
 Allows body to reach physical peak
 Weakness:
 Complicated calories computations and
portion measurements.
South Beach
 Phase One:
 Ban most carbohydrates (fruit, bread, rice, pasta)
 Normal portion (meat, poultry, shellfish, eggs, nuts)
 8-13lb weight loss in 2 weeks.
 Phase Two:
 “good” carbohydrates based on Glycemic Index.
 Maintain until goal weight is achieved (1-2 lbs/ wk).
 Phase Three:
 Moderation in food choices
 WEAKNESS:
 Potentially Dangerous Accelerated Weight loss in
first phase.
Weight Watchers
 Concept:
 Point system calculates the
amount of calories you can eat
without gaining weight.
 Maintenance:
 Weekly support groups, online resources.
 Positive:
 Give extra points for physical
activity!
 Weakness:
 Limits food intake which could
lead to vitamin/ mineral
deficiencies.
RAW FOODS
 Concept:
 Cooked foods lose natural
vitamins and enzymes needed for
a strong immune system.
 Positive:
 Raw foods are high in fiber, while
low in total fat and saturated fat.
 Weakness:
 Restriction of nutrients.
 Eliminates animal products.
 Could lead to deficiencies in
Vitamin B12 and Vitamin D
THE FOOD GUIDE PYRAMID
Food Group
1600 2200 2800
kcal kcal kcal
Grains
6
6
11
Vegetables
3
4
5
Fruit
2
3
4
Dairy
3
3
3
Protein
2
2
3
Resources
 American Dietetic Association
www.eatright.org
 USDA 2005 Dietary Guidelines for Americans
http://www.health.gov/dietaryguidelines/
 National Cattleman’s Beef Association
http://www.beef.org