The Latest In Weight
Loss Research
Chautauqua 2014
Kelly Fang, MA
Health Coach and Wellness Program Manager
1
US NEWS & WORLD REPORT: BEST DIETS
A panel of 22 diet experts rank the most popular diets.
Criteria:
1.
Effective for short-term or long-term weight reduction
2.
Easy to follow
3.
Safe and nutritionally balanced
2
US NEWS & WORLD REPORT: BEST DIETS
Best Overall Diet:
DASH Diet
Last Place:
Paleo Diet
3
Dietary Approaches to Stop Hypertension (DASH)
Designed to lower blood pressure
High in fruit and vegetables (7-12 servings a day)
Low in saturated fat, sugar and salt
US News:
Nutritionally balanced
Safe
Heart healthy
4DASH DIET
20 point increase in systolic blood pressure (above 115)
OR
10 point increase in diastolic blood pressure (above 75)
=
Doubles your cardiovascular disease risk
DASH diet can lower systolic blood pressure by 8 to 14 pts.
Equivalent of taking a single antihypertensive medication.
5
( J O I N T N A T I O N A L C O M M I T T E E O N T H E P R E V E N T I O N , D E T E C T IO N , E V A L U A T IO N , A N D T R E A T M E N T O F H I G H B L O O D P R E S S U R E , 2 0 0 3 )
DASH & WEIGHT LOSS
Archives of Internal Medicine
144 overweight or obese adults with high blood pressure were assigned to one of three approaches:
1. DASH
2. DASH plus exercise and classes on weight loss 3. Control
After four months, those in the DASH plus group lost on average 19 pounds—while the other groups either lost a little or gained weight.
6
DASH & WEIGHT LOSS
Annals of Internal Medicine
Randomly assigned 810 adults with borderline or mild high blood pressure to three groups:
1. General advice for controlling blood pressure
2. Goals: <2,300 mg. of sodium a day, lose weight, exercise, and limit alcohol
3. Same goal as #2, plus told to follow DASH’s dietary guidelines. After 18 months, the second group lost an average of about 8 pounds while the DASH group lost about 9½—both significantly more than the first group’s 3 pounds.
7 ( E L M E R , E T A L . , 2 0 0 6 )
DASH DIET
8 N A T I O N A L H E A R T L U N G & B L O O D I N S T I T U TE 9 N A T I O N A L H E A R T L U N G & B L O O D I N S T I T U TE 10 N A T I O N A L H E A R T L U N G & B L O O D I N S T I T U TEUS NEWS
#1 DIET FOR WEIGHT LOSS:
WEIGHT WATCHERS
Safe & flexible (no foods are off limits)
Weight Watchers’ PointsPlus program, launched in Nov. 2010 Assigns every food a points value
Choices that fill you up the longest “cost” the least Nutritionally dense foods cost less than empty calories
11
( H A U P T , B E S T D I E T S : W E I G H T W A T C H E R S , 2 0 1 3 )
WEIGHT WATCHERS (WW)
British Medical Journal
Short-term: WW = other commercial weight loss programs
British Journal of Nutrition
Long-term: Reasonably effective at keeping weight off Out of 600 WW participants:
Nearly 60% stayed within 5 pounds of their goal weight one year after completing the program.
45% two years later 37% five years later
12
( T R U B Y , E T A L . , 2 0 1 3 ) ( L O W E , K R A L , & M I L L E R - K OV A CH , 2 0 0 8 )
WEIGHT WATCHERS GROUP MEETINGS
Annals of Internal Medicine
Weight Watchers dieters who attended the most weekly group sessions over a two-year period, kept the most weight off
About half the participants stopped attending weekly meetings within the first six weeks
70% stopped within 12 weeks
13
( T S A I & W A D D E N , 2 0 0 5 )
WEIGHT WATCHERS TAKE-AWAYS
I M A G E : T R Y M U N I T Y . CO M 14
Track your eating
Weigh yourself weekly
Have someone for
support and accountability
15 I M A G E : P A L E O D I E T. CO M
PALEO DIET
16 ( D E N N Y , 2 0 1 3 ) I M A G E S : F E M I N I Y A . CO M; N P R . O R G ; M O V E M E N T U N L EA SH E D.C OMPALEO DIET
17 ( D E N N Y , 2 0 1 3 ) I M A G E : C R O S S F I T T R A IN IN G WO R K O UT S. CO MPALEO DIET & WEIGHT LOSS
Possible short-term, doubtful long-term Must create a calorie deficit.
In one 12 week study, Paleo dieters lost the same amount of weight as those on a Mediterranean diet
Experts for US News rated the Paleo diet poorly because studies were: Few Small Short 18 ( S C H A R D T , S H E D P O U N D S O N A P A L E O D I E T ? , 2 0 1 3 ) ( H I A T T , 2 0 1 3 )
PALEO DIET
19 I M A G E : D A I L Y H IIT . CO MGLUTEN-FREE
20 I M A G E : D O W N L O A DC LIP AR T . NE T ; C A M I N O IS LA N DM ILL S. CO M ; L A C T O S E IN T O LO RA N T. B L OG S P O T .CO MGLUTEN-FREE
Not just another fad diet – for some, a necessary lifestyle Celiac disease has increased dramatically in the U.S. since 1950 Now affects 1 percent of the population
Gluten – a protein found in wheat, barley, and rye, triggers an abnormal immune response that damages the lining of the small intestine Can cause diarrhea, cramps, pain, bloating, and vitamin deficiencies An estimated 6 percent (16 to 18 million people) are considered gluten
sensitive or gluten intolerant
Can cause many of the same symptoms without the intestinal damage
21 ( L I E B M A N , I S T H E I N C I D E NC E O F C E L I A C D I S E A S E R I S I N G ? , 2 0 1 3 )
GLUTEN-FREE CLAIMS
( B E R L , 2 0 1 4 ) 22 Eczema chronic fatigue Headaches Infertility ADHD Autism Depression Chronic inflammation Thyroid disease DiabetesGLUTEN-FREE & WEIGHT LOSS
I M A G E : C N N . C O M 23
Any restriction typically leads to weight loss
Difficult to eat convenient, processed foods that are high in fat and sugar
Beware as more GF convenient foods appear on the shelves
GLUTEN-FREE & WEIGHT LOSS
Choose whole grains like millet and amaranth Complex carbohydrates: fruit and vegetables Meat
Legumes Dairy
INTERMITTENT FASTING
Eric Ravussin, director of the Nutrition Obesity Research Center in Baton Rouge, LA
1. 150 normal-weight or slightly over-weight men and women: consume 25% fewer calories at each meal
2. 75 similar people to eat their normal diet, for two years
Those who cut calories lost 10% of their body weight, despite only managing to eat 12% fewer calories
Lowered blood pressure
Improved insulin response
lowering risk for heart attack, stroke and diabetes.
But, why didn’t the calorie cutters cut more?
25 ( S C H A R D T , A D D I N G Y E A R S ? T H R E E C O I N S I N T H E F O U N T A I N O F Y O U T H , 2 0 1 4 )
INTERMITTENT FASTING
( L E M O N D ) ( S C H A R D T , A D D I N G Y E A R S ? T H R E E C O I N S I N T H E F O U N T A I N O F Y O U T H , 2 0 1 4 ) I M A G E : A M A Z O N . C O M 26Cutting calories on some days may be easier
Eat “normally” 5 days a week Eat ¼ normal intake 2 days Fast days:
Women: 500 calories
Men: 600 calories
Choose lean protein & low-glycemic foods
INTERMITTENT FASTING & WEIGHT LOSS
International Journal of Obesity
166 overweight middle-aged women into two groups. Both groups were told to cut calories by 25%
1. Trim calories in each meal 2. Follow a 5:2 plan
Fast Days = 4 cups of low-fat milk, 4 servings of vegetables, 1 serving of fruit, low calorie drinks and a daily multivitamin.
So…what happened after 6 months?
27
( M N H A R V I E , 2 0 1 1 )
( S C H A R D T , A D D I N G Y E A R S ? T H R E E C O I N S I N T H E F O U N T A I N O F Y O U T H , 2 0 1 4 )
INTERMITTENT FASTING & WEIGHT LOSS
Both groups lost the same amount of weight - about 13 pounds Insulin-resistance declined more in the 5:2 group than in those who cut
calories daily
Women on the 5:2 plan lost slightly more body fat
28
( M N H A R V I E , 2 0 1 1 )
( S C H A R D T , A D D I N G Y E A R S ? T H R E E C O I N S I N T H E F O U N T A I N O F Y O U T H , 2 0 1 4 )
INTERMITTENT FASTING
& YOUR BRAIN
Journal of the American Aging Association
Deprived middle-aged rats of all food, every other day for three months Rats lost 23% of their body weight
Better motor coordination and cognitive skills than rats who could eat all they wanted.
Neurobiology of Disease
Bred mice to develop Alzheimer’s by middle age, but only had them eat every other day Mice delayed the onset of dementia by the human equivalent of 10 years Researchers believe intermittent fasting increases a protein that stimulates growth of new brain cells and the connections between them. But not yet able to say the same results happen in humans.
29 ( S I N G H , E T A L . , 2 0 1 2 ) ( H A L A G A P P A , E T A L . , 2 0 0 7 ) ( S C H A R D T , A D D I N G Y E A R S ? T H R E E C O I N S I N T H E F O U N T A I N O F Y O U T H , 2 0 1 4 )
INTERMITTENT FASTING
Potential side-effects: Not appropriate for:
( L E M O N D )
30
Make up calories on other days Irritability Daytime sleepiness Nighttime sleeplessness Dehydration Diabetics Children Pregnant or nursing Certain prescription medications Eating disorder
INTERMITTENT FASTING: THE BOTTOM LINE
For people who are overweight or obese, intermittent fasting is as effective
as a continuously restricting calories, and therefore can be an alternative approach to losing weight.
31
I M A G E :
G R E E N H E A L T HA ND F IT N ES S .W O R LDP R E S.COM
LOW FAT VS. LOW CARB
32
I M A G E : J E S S I C A WL UT HE R .C OM
LOW FAT VS. LOW CARB
Christopher Gardner, an associate professor of medicine and the director of nutrition studies at the Stanford Prevention Research Center If you pool all the studies, there’s no difference in weight loss between
low-fat and low-carb. “Hugely disappointing”
33
( L I E B M A N , N E W C L U E S T O W E I G H T G A I N A N D L O S S , 2 0 1 4 )
LOW FAT VS. LOW CARB
Assigned participants to either Atkins low-carb diet, the Ornish low-fat diet or the Zone and LEARN diets that fell in the middle. After one year, the Atkins low-carb diet was slightly better on average But, weight loss varied greatly:
Some women lost 40-50 pounds
Others lost nothing or even gained weight
What could explain the difference?
34
( L I E B M A N , N E W C L U E S T O W E I G H T G A I N A N D L O S S , 2 0 1 4 )
LOW FAT VS. LOW CARB
Insulin resistant = lost more weight on the low-carb Atkins diet Not insulin resistant = no better on any one diet
Successes and failures might cancel each other out But when you tease them apart, there’s a bigger difference
35
( L I E B M A N , N E W C L U E S T O W E I G H T G A I N A N D L O S S , 2 0 1 4 )
METABOLIC SYNDROME
I M A G E : P R E D I A B E T E S CE NT E R S .CO M 36 More likely to be insulin resistant if you meet the criteria for metabolic syndrome.
Must meet 3 out 5 features: Large waist
Low HDL (“good”) cholesterol Elevated blood sugar Elevated triglycerides, Elevated blood pressure.
NATIONAL WEIGHT CONTROL REGISTRY
Made up of more than 6000 people who have maintained a weight loss of at least 30 pounds, for more than a year.
1. Be active = 200 minutes per week of moderate-intensity exercise 2. Turn off the television = less than ten hours per week 3. Eat a low-calorie, low-fat diet = Average member consumes 1,380
calories per day
4. Keep your diet consistent = holidays or weekends 5. Eat breakfast = helps curb hunger and overeating later 6. Show some restraint = rarely overeat
7. Keep track of your progress = weighing and recording food intake
37
( A M E R I C AN C O L L E G E O F S P O R T S M E D I C IN E , 2 0 1 1 )
WHAT DIET IS RIGHT FOR YOU?
Ask yourself:
How long can I stay on this? How will you feel? Dietary preferences?
Think about what did and didn't work the last time you were on a diet?
38
I CAN HELP
To make an appointment for coaching and support with reaching your weight loss goal, regardless of which diet you choose, contact me at
[email protected] or 651-969-6963
Join me:
Mondays at 12:00 with our Weight No More group, or Mondays at 12:30 with our Wellness Walkers