Obesity

Diet and Physical Activity

Pennington Biomedical Research Center Division of Education

Obesity in the United States

 Approximately 66% (or two thirds) of U.S. adults are overweight or obese.

 Healthy People 2010: reduce the prevalence of obesity among adults to less than 15%.

 The obesity rate increased from the late 1970’s to 2003 from 15 to nearly 33 percent. CDC 2009

NIDDK 2009

Obesity in the U.S.

 Body mass index weight (kg)/ height squared (m 2 ).

(BMI)  BMI is significantly correlated with total body fat content.

With a BMI of:

Below 18.5

18.5 - 24.9

25.0 - 29.9

30 or higher

You are considered:

Underweight

Healthy Weight

Overweight Obese

BMI tables: http://www.nhlbisupport.com/bmi

Obesity in the U.S.

• Obesity is further divided into three separate classes, with Class III obesity being the most extreme of the three.

With a BMI of: You are considered:

Obesity class

Class I Class II Class III (Extreme Obesity) Below 18.5

18.5 - 24.9

25.0 - 29.9

30 or higher

Underweight

Healthy Weight

Overweight

Obese

2009 CDC, NHLBI

BMI (kg/m 2 )

30.0- 34.9

35.0-39.9

≥ 40.0

Obesity in the United States

Percent of Obese (BMI > 30) in U.S. Adults

 In the United States, some minority groups are more affected than others. Income and education are also related to obesity prevalence.  Some states have significantly higher rates of obesity than others.

http://www.cdc.gov/nccdphp/dnpa/obesity/trend/maps / 2009 NIDDK, Women’s Health

Obesity in the U.S.

Being overweight/obese substantially raises one’s risk of morbidity from:      Hypertension Dyslipidemia Type 2 Diabetes Coronary Heart Disease Stroke     Gallbladder Disease Osteoarthritis Sleep apnea Certain cancers (endometrial, breast, prostate, colon) Higher body weights are also associated with increases in all-cause mortality.

2009 J La State Med Soc. 2005; 156: S42-S49.

NIDDK 2009

Obesity in the U.S.

Obesity is also associated with:  High blood cholesterol  Complications of pregnancy  Stress incontinence ( urine leakage caused by weak pelvic-floor muscles)  Menstrual irregularities  Psychological disorders such as depression  (presence of excess body and facial hair) Increased surgical risk

CDC 2009

What Causes Obesity?

   Energy imbalance over a long period of time. Energy in > Energy out.

Excess calories and lack of physical activity.

Energy balance is like a scale. When calories consumed are greater than calories used, weight gain is the result.

Calories Used

   Eating, digestion, sleeping, breathing, and movement.

Excess calories. Physical activity.

Food/beverages consumed CDC 2009 Calories in (consumed) Energy Balance Calories used (expended) Necessary physiological functions Physical activity

NIDDK 2009

Overweight The Right Approach

 If your BMI is between 25 and 30 and you are otherwise healthy   Try to avoid gaining any additional weight Look into healthy ways of losing weight and increasing physical activity

NIDDK 2009

Overweight The Right Approach

Talk to your doctor about losing weight if you fall into any one of the three scenarios: 1.

2.

3.

BMI is 30 or above,

or

1.

BMI is between 25 and 30

and

: You have other health conditions Waist measures > 35 inches (women) or > 40 inches (men) 1.

and

: You have other health conditions

2009

Weight Loss & Maintenance Strategies to Consider

Physical Activity & Diet Therapy

2009 NHLBI

Why Treat Overweight and Obesity?

Because there is strong evidence that weight loss reduces risk factors for diabetes and cardiovascular disease, such as:

blood pressure serum triglycerides total serum cholesterol low-density lipoprotein cholesterol blood glucose levels

Weight Loss Programs

Any safe and effective weight-loss program should include these components:       Healthy eating plans that reduces caloric intake Regular physical activity and/or exercise instruction Tips on healthy behavior Slow and steady weight loss of about ¾ to 2 pounds a week Medical care if needed

A plan to keep the weight off after you have lost it

NIDDK 2009

NIDDK 2009

Weight Loss

The key to any successful weight loss is making changes in your eating and physical activity habits that you can keep for the rest of your life.

Physical Activity

Physical Inactivity In the U.S.

  Many studies show that Americans are too sedentary.

Due to   Increased use of technology.

Increased use of automobiles. According to the Behavioral Risk Factor Surveillance System, in 2000 more than

26 percent

of adults reported

no leisure time physical activity

.

CDC 2009

 

Physical Inactivity In the U.S.

Physical inactivity contributes to premature deaths.

Rates differ by race and ethnicity.

    Hispanic women - most inactive Hon-Hispanic women – second Asian and Pacific islander women – third and, lastly, White non-Hispanic women - fourth.

2009 Women’s Health

2009 CDC

Physical Activity

   Contributes to weight loss.

Helpful for the prevention of overweight and obesity.

Helps maintain weight loss.

2009 CDC

Physical Activity

 Occupational work  Carpentry, construction, waiting tables, farming  Household chores  Washing floors or windows, gardening, or yard work  Leisure time activities  Walking, skating, biking, swimming, playing Frisbee, dancing, softball, tennis, football, aerobics

2009 CDC 

Physical Activity

Regular physical activity is good for overall health.

Physical activity decreases the risk for:  Colon cancer   Diabetes High blood pressure  Physical activity also helps to:  Control weight    Contribute to healthy bones, muscles, and joints Reduce falls among the elderly Relieve the pain of arthritis.

How Much Physical Activity a Day?

The 2005 Dietary Guidelines for Americans recommend the following for adults: To reduce the risk of chronic diseases in adulthood : Engage in at least 30 minutes of moderate-intensity physical activity, above usual activity, at work or home on most days of the week.

To help manage weight and prevent gradual, unhealthy weight gain in adulthood on most days of the week while not exceeding caloric intake requirements.

: Engage in approximately 60 minutes of moderate- to vigorous-intensity activity To sustain weight loss in adulthood : Participate in at least 60 to 90 minutes of daily moderate- to vigorous-intensity physical activity while not exceeding caloric intake requirements. (Some may need to contact their healthcare provider before participating in this level of activity.) 2009 Dietary Guidelines for Americans

2009

How Much Physical Activity a Day?

   

Any activity helps. Moderate physical activity brings health benefits.

Make it personal.

Start slowly (10 minute walk/day).

2009

Increasing Physical Activity

You can increase your physical activity by taking small steps to change what you do everyday.

If you normally… Park as close as possible to the store Let the dog out back Take the elevator Have lunch delivered Relax while the kids play Then try this instead!

Park farther away Take the dog for a walk Take the stairs Walk to pick up lunch Get involved in their activity Women’s Health

How Many Calorie Am I Burning?

Activity

Bicycling, 6 mph Bicycling, 12 mph Jogging, 7 mph Jumping rope Running, 5.5 mph Running, 10 mph Swimming, 25 yds/min Swimming, 50 yds/min Tennis singles Walking, 2 mph Walking, 3 mph Walking, 4.5 mph 2009 Calories burned/hour of activity

100 lb

160 270 610 500 440 850 185 325 265 160 210 295

150 lb

240 410 920 750 660 1,280 275 500 400 240 320 440

200 lb

312 534 1,230 1,000 962 1,664 358 650 535 312 416 572 American Heart Association

 

How Many Calories Do I Need?

To maintain - use your current weight.

To lose - use the average healthy weight recommended for your height. ACS 2009

2009

Calculating Ideal Body Weight

For men: Use 106 pounds of body weight for the first 5 feet of their height. Add 6 pounds for each additional inch.

For women: Use 100 pounds of body weight for the first 5 feet of their height. Add 5 pounds for each additional inch.

A 5’9 man’s ideal body weight would be: First 5’0 = 106 lb standard weight for men Plus 9 additional inches  9 (6 lbs)= 54 lbs 106 + 54= 160 pounds (± 10%)= 144 to 176 144 to 176 pounds is this man’s idea weight A 5’4 woman’s ideal body weight would be: First 5’0= 100 lb standard weight for women Plus 4 additional inches  4(5 lbs)= 20 100 + 20= 120 pounds (± 10%)= 108 to 132 108 to 132 pounds is this woman’s ideal weight

How Many Calories Do I Need?

    USDA’s MyPyramid site: http://www.mypyramid.gov/ Determines calorie needs and calculates the servings needed from food groups.

The American Cancer Society (ACS) site: http://www.cancer.org/docroot/PED/content/PED_6_1x_ Calorie_Calculator.asp

The ACS site indicates the number of calories that are needed per day to maintain your current weight. 2009

On the Path to Increased Physical Activity

Before Beginning an Exercise Program

      You should check with your doctor before beginning an exercise program if you: Are a man older than age 40 or a woman older than age 50  Have had a heart attack   Have a family history of heart-related problems before age 55  Have heart, lung, liver or kidney disease Feel pain in your chest, joints, or muscles during physical activity Have high blood pressure, high cholesterol, diabetes, arthritis, osteoporosis, or asthma    Have had joint replacement surgery Smoke Are overweight or obese Tale medication to manage a chronic condition Have an untreated joint or muscle injury, or persistent symptoms after a joint or muscle injury Are pregnant Unsure of your health status.

2009 Mayo Clinic

Health Benefits of Physical Activity

Health benefits of physical activity. CMAJ. 2006; 174(6): 801-809.

2009

Physical Activity Primary Effects on Diabetes Mellitus



Aerobic and resistance

exercise decrease the incidence of type 2 diabetes.

types of  A modest weight loss through diet and exercise reduces the incidence of diabetes.

CMAJ. 2006;174(6): 801-809.

2009

Physical Activity Secondary Effects on Diabetes Mellitus

 Exercise helps in the management of diabetes.



Aerobic and resistance training

help in the control of diabetes

CMAJ. 2006;174(6): 801-809.

2009 

Physical Activity Primary Effects on Cancer

Routine activity reduces the incidence cancers.

 Activity results in a 30-40% reduction in the relative risk of colon cancer and breast cancer. Moderate physical activity is believed to exhibit a greater protective effect than activities of less intensity.

CMAJ. 2006;174(6): 801-809.



Physical Activity Secondary Effects on Cancer

Regular physical activity - important.

 Increased self-reported physical activity = decreased reoccurrence of cancer and a decreased risk of death from cancer.

 Reduced cancer-related death.

2009

CMAJ. 2006;174(6): 801-809.

2009

Physical Activity Primary Effects on Osteoporosis

 Many studies have been conducted.

 According to findings, routine physical activity , especially weight-bearing and impact exercise, prevents bone loss associated with aging .

CMAJ. 2006;174(6): 801-809.

Physical Activity Secondary Effects on Osteoporosis

 Regular physical activity can lead to stronger bones.  Bone responds to physical stress at any age; even in the elderly. 2009 Osteoporosis

CMAJ. 2006;174(6): 801-809.

Eating for Weight Loss

 

The Critical Role of Healthy Eating

Good nutrition leads to a healthier life.

Many do not eat based on MyPyramid recommendations. CDC 2009

U.S. Eating Habits

82 80 78 76

81%

74

73%

72 70 68

Men Women Total 2009 CDC. Behavioral Risk Factor Surveillance System 77% In 2000, the larger majority of U.S. adults reported that they did not consume 5 or more servings of fruits and vegetables/day .

Percentage of adults reporting that they consumed fewer than 5 servings of fruits and vegetables/day, 2000

1.

2.

3.

4.

5.

6.

Dietary Guidelines for Americans, 2005 Tips for Healthy Eating

MyPyramid, which is the newest Food Guide Pyramid, recommends the following for a healthy lifestyle: Make half your grains whole Vary your veggies Focus on fruit Get your calcium rich foods Go lean with protein Find your balance between food and physical activity 2009 MyPyramid: http://mypyramid.gov/

A Healthy Diet

The 2005 Dietary Guidelines for Americans defines a healthy diet as one that:    Emphasizes fruits, vegetables, whole grains, fat-free or low-fat milk, & milk products; Includes lean meats, poultry, fish, beans, eggs, and nuts Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.

2009 MyPyramid: http://mypyramid.gov/

Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population  1. Adequate Nutrients Within Calorie Needs  Consume a variety of nutrient-dense foods (whole grains, fruits and vegetables, lean meats, low-fat dairy) and beverages within and among the basic food groups while choosing foods that limit the intake of saturated fats and trans fats, cholesterol, added sugars, salt, and alcohol.

 Meet recommended intakes within energy needs by adopting a balanced eating pattern, such as the USDA Food Guide or the Dietary Approaches to Stop Hypertension (DASH) Eating Plan.

2009 MyPyramid: http://mypyramid.gov/

Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population  2. Weight Management  To maintain body weight in a healthy range, balance calories from foods and beverages with calories expended.  To prevent gradual weight gain over time, make small decreases in food and beverage calories and increase physical activity.

2009 MyPyramid: http://mypyramid.gov/

Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population  3. Physical activity   Engage in regular physical activity and reduce sedentary activities to promote health, psychological well-being, and a healthy body weight. Achieve physical fitness by including cardiovascular conditioning, stretching exercises for flexibility, and resistance exercises for muscle strength and endurance.

2009 MyPyramid: http://mypyramid.gov/



Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population 4. Food Groups to Encourage     Consume a sufficient amount of fruits and vegetables while staying within energy needs. Choose a variety of times a week. fruits and vegetables each day. Select from all five vegetable subgroups (dark green, orange, legumes, starchy vegetables, and other vegetables) several Consume 3 or more ounce-equivalents of the grains should come from whole grains. whole-grain products per day, with the rest of the recommended grains coming from enriched or whole-grain products. At least half Consume 3 cups per day of fat-free or low-fat milk equivalent milk products. or 2009 MyPyramid: http://mypyramid.gov/

Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population  5. Fats       Keep total fat intake between 20 - 35 percent of calories (With most fats coming from sources of polyunsaturated and monounsaturated fatty acids, such as fish, nuts, and vegetable oils).

Limit intake of fats and oils high in saturated and/or trans fatty acids, and choose products low in such fats and oils.

Consume less than 10 percent of calories from saturated fatty acids Consume less than 300 mg/day of cholesterol Keep trans fatty acid consumption as low as possible When selecting and preparing meat, poultry, dry beans, and milk or milk products, make choices that are lean, low-fat, or fat-free. 2009 MyPyramid: http://mypyramid.gov/

Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population  6. Carbohydrates    Choose fiber-rich fruits, vegetables, and whole grains often. Choose and prepare foods and beverages with little added sugars or caloric sweeteners.

Reduce the incidence of dental caries by practicing good oral hygiene and consuming sugar- and starch-containing foods and beverages less frequently.

 7. Sodium and Potassium   Consume less than 2,300 mg (approximately 1 teaspoon of salt) of sodium per day. Choose and prepare foods with little salt. At the same time, consume potassium-rich foods, such as fruits and vegetables. 2009 MyPyramid: http://mypyramid.gov/



Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population 8. Alcoholic Beverages    Those who choose to drink alcoholic beverages should do so sensibly and in moderation (≤ 1 drink for women/day and ≤ 2 drinks for men/day). Alcoholic beverages should be avoided by individuals engaging in activities that require attention, skill, or coordination, such as driving or operating machinery.

Alcoholic beverages should not be consumed by some individuals, including: those who cannot restrict their alcohol intake, women of childbearing age who may become pregnant, pregnant and lactating women, children and adolescents, individuals taking medications that can interact with alcohol, and those with specific medical conditions. 2009 MyPyramid: http://mypyramid.gov/



Dietary Guidelines for Americans, 2005

Key Recommendations for the General Population 9. Food Safety  To avoid microbial food borne illness:      Clean hands, food contact surfaces, fruits, and vegetables. Meat and poultry should not be washed or rinsed. Separate raw, cooked, and ready-to-eat foods while shopping, preparing, or storing foods. Cook foods to a safe temperature to kill microorganisms. Chill (refrigerate) perishable food promptly and defrost foods properly. Avoid raw (unpasteurized) milk or any products made from unpasteurized milk, raw or partially cooked eggs or foods containing raw eggs, raw or undercooked meat and poultry, unpasteurized juices, and raw sprouts. 2009 MyPyramid: http://mypyramid.gov/

Weight loss:

Goals for Weight Management of Weight Lost

Calorie Deficit Needed For Weight Loss

   A calorie deficit of no more than 500 kcal/day. This can be achievable through the combination of diet + exercise.

An example of how to create a calorie deficit of 500 kcal/day through diet + exercise would be: eating 250 kcal less per day, along with burning 250 calories through exercise ACS 2009

Calorie Deficit Needed For Weight Loss

A caloric deficit of 500 can be done by:      Eating 250 kcal less per day: Leave out mayonnaise in a sandwich Leave out dessert Switch from soft drinks to water Reduce portion sizes     burning 250 calories through exercise: Walk for 30 minutes Swimming 25 yards Bicycling for 30 minutes 2009

2009 NHLBI

Exercise + Dieting Calorie Deficit

    Initially physical activity, in combination with dieting, is an important component of weight loss.

However, after around 6 months, physical activity will not lead to substantially greater weight losses when combined with dieting.

The benefit of sustained physical activity thereafter is mainly through its role in the prevention of weight gain.

In addition, it has a benefit in reducing cardiovascular and diabetes risks beyond that produced by weight gain alone.

Goals for Weight Loss And Management

   The initial goal of weight loss therapy is to reduce body weight by approximately 10 percent from baseline. Once this goal is achieved, then further weight loss can be attempted, if necessary. A reasonable time line weight is 6 months.

for a 10 percent reduction in body Experience reveals that lost weight is usually regained unless a weight maintenance program, consisting of diet therapy, physical activity and behavior therapy, is continued indefinitely.

2009 NHLBI

   

Goals for Weight Loss And Management

For overweight individuals with BMIs in the typical range of 27 to 35 kg/m 2 , a decrease of 300 to 500 kcal/day will result in weight losses of about ½ to 1 lb per week.

A 10 percent weight loss could be achieved within 6 months.

For more severely obese individuals (BMI > 35), deficits of up to 500 to 1,000 kcal/day will lead to weight losses of about 1 to 2 lb per week.

A 10 percent weight loss could be achieved within 6 months.

2009 NHLBI

   

Goals for Weight Loss And Management

After 6 months of weight loss treatment, the individual should be assessed.

If no further weight loss is needed, then the current weight should be maintained.

Sustained physical activity is particularly important in the prevention of weight regain.

If further weight loss is desired, another attempt at weight reduction can be made.

2009

Pennington Biomedical Research Center

   Division of Education Phillip Brantley, PhD, Director Pennington Biomedical Research Center Claude Bouchard, PhD, Executive Director Heli J Roy, PhD, RD, Associate Professor Beth Kalicki 2009

                    

About Our Company

The Pennington Biomedical Research Center is a world-renowned nutrition research center.

Mission:

To promote healthier lives through research and education in nutrition and preventive medicine. The Pennington Center has several research areas, including: Clinical Obesity Research Experimental Obesity Functional Foods Health and Performance Enhancement Nutrition and Chronic Diseases Nutrition and the Brain Dementia, Alzheimer’s and healthy aging Diet, exercise, weight loss and weight loss maintenance The research fostered in these areas can have a profound impact on healthy living and on the prevention of common chronic diseases, such as heart disease, cancer, diabetes, hypertension and osteoporosis. The Division of Education provides education and information to the scientific community and the public about research findings, training programs and research areas, and coordinates educational events for the public on various health issues.

We invite people of all ages and backgrounds to participate in the exciting research studies being conducted at the Pennington Center in Baton Rouge, Louisiana. If you would like to take part, visit the clinical trials web page at www.pbrc.edu or call (225) 763-3000.

2009

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References

Centers for Disease Control and Prevention (CDC): Prevalence of Overweight and Obesity Among Adults: U.S., 2003-2004. Available at: http://www.cdc.gov/nchs/products/pubs/pubd/hestats/obese03_04/overwght_adult_03.htm

Womenshealth.gov. Physical Activity. Available at: http://www.womenshealth.gov/pub/steps/Physical%20Activity.htm

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Do You Know the Health Risks of Being Overweight? Available at: http://win.niddk.nih.gov/publications/health_risks.htm

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Statistics Related to Overweight and Obesity. Available at: http://win.niddk.nih.gov/statistics/index.htm

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Weight and Waist Measurement: Tools for Adults. Available at: http://win.niddk.nih.gov/publications/tools.htm

2009

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References

Bellanger T, Bray G. Obesity related morbidity and mortality. J La State Med Soc. 2005; 156: S43-49.

National Heart, Lung, and Blood Institute (NHLBI). Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults. Available at: http://www.nhlbi.nih.gov/guidelines/obesity/ob_exsum.pdf

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Choosing a Safe and Successful Weight-loss Program. Available at: http://win.niddk.nih.gov/publications/choosing.htm

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). Weight Loss for Life. Available at: http://win.niddk.nih.gov/publications/for_life.htm

Warburton D, Nicol C, Bredin S. Health benefits of physical activity: the evidence. 2006; CMAJ; 174(6): 801-809.

2009

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References

Dietary Guidelines for Americans 2005. Available at: http://www.health.gov/dietaryguidelines/dga2005/recommendations.htm

American Heart Association (AHA). Physical Activity Calorie Use Chart. Available at: http://www.americanheart.org/presenter.jhtml?identifier=756 American Cancer Society (ACS). Exercise Counts. How Many Calories Will Your Activity Burn? Available at: http://www.cancer.org/docroot/PED/content/PED_6_1x_Calorie_Calculator.asp

Mayo Clinic. Exercise: When To Check With Your Doctor First. Available at: http://www.mayoclinic.com/health/exercise/SM00059 2009