dietary approaches for the treatment of obesity
DESCRIPTION
Dietary approaches for the treatment of obesity. Amanda Hallson ( MSc.,RD ) Dietitian in Obesity Management. Overview. BDA Position Paper on obesity treatment What we did then… Current evidence base Dietary intervention in GCWMS Nutritional resources Current and future debate. - PowerPoint PPT PresentationTRANSCRIPT
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Dietary approaches for the approaches for the treatment of obesitytreatment of obesity
Amanda Hallson (Amanda Hallson (MSc.,RDMSc.,RD))
Dietitian in Obesity ManagementDietitian in Obesity Management
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OverviewOverview
• BDA Position Paper on obesity BDA Position Paper on obesity treatmenttreatment
• What we did then…What we did then…• Current evidence baseCurrent evidence base• Dietary intervention in GCWMSDietary intervention in GCWMS• Nutritional resourcesNutritional resources• Current and future debateCurrent and future debate
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BDA Position PaperBDA Position PaperObesity treatment: future directions Obesity treatment: future directions
for the contribution of dietitiansfor the contribution of dietitians
First published in First published in Journal of Human NutritionJournal of Human Nutrition and Dietetics and Dietetics (1997)(1997)
• Addressed strategies which dietitians could use to Addressed strategies which dietitians could use to promote weight loss and weight maintenance in obese promote weight loss and weight maintenance in obese adultsadults
• Recognised that both prevention & treatment of obesity Recognised that both prevention & treatment of obesity are complex and difficult endeavoursare complex and difficult endeavours
• Dietitians are well positioned to provide evidence based, Dietitians are well positioned to provide evidence based, independent information on nutrition & eating behaviour independent information on nutrition & eating behaviour in the management of obesityin the management of obesity
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Past dietary advicePast dietary advice
• Simplicity of approachSimplicity of approach• Individuals severely restricting their energy Individuals severely restricting their energy
intakeintake• Proved to be ineffective in the long termProved to be ineffective in the long term• Hence ethically questionableHence ethically questionable• Weight cycling – Binge eating disorderedWeight cycling – Binge eating disordered• Developing and evaluating different types of Developing and evaluating different types of
treatment approaches treatment approaches
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Obesity can only occur when Obesity can only occur when energy intake remains higher energy intake remains higher than energy expenditurethan energy expenditure
Adipose tissue
Energy Intake
Energy Expenditure
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Reasons…Reasons…
Availability of energy dense foodsAvailability of energy dense foods A move away from the traditional dietA move away from the traditional diet A decrease in cooking, menu planning and A decrease in cooking, menu planning and
shopping skillsshopping skills An increase in the consumption of snacks and An increase in the consumption of snacks and
sugar based beveragessugar based beverages Food portion sizesFood portion sizes Significant growth in the UK market for fast food Significant growth in the UK market for fast food
and takeaway outlets. and takeaway outlets.
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Decrease in energy expenditureDecrease in energy expenditure
ActivityActivity Kcal/week Kcal/week 1950’s1950’s
Kcal/week Kcal/week 20002000
Food shoppingFood shopping 2400 (on foot) 276 (driving)
Washing Washing clothesclothes
1500 (by hand) 270 (washing machine)
HeatingHeating 1300 (making a coal fire)
Almost zero
(thermostat)
Making a bedMaking a bed 575 (with blankets)
300 (with duvet)
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Energy Balance
• Accumulation of only 50 - 200 kcal daily leads over 4 -10 year period to a slow and progressive weight increase 2-20kg
• Each extra 10kg of weight indicates an extra 70,000 stored kcal
• A woman of average height and a BMI of 30 kg/m2 has about 105,000 excess kcal stored
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DrinkDrink CaloriesCalories Why?Why? How much?How much?330ml fizzy drink330ml fizzy drink 134134 SugarSugar 36g = 7 tsp36g = 7 tsp
Large wholeLarge whole
milk vanilla milk vanilla
lattelatte
364364 SugarSugar
FatFat
42g = 10.5 tsp42g = 10.5 tsp
14g = 3 tsp oil14g = 3 tsp oil
125ml white 125ml white
winewine8282 Sugar & Sugar &
alcoholalcohol82g = 4 tsp82g = 4 tsp
250ml fruit 250ml fruit smoothiesmoothie
160160 SugarSugar 30g = 8 tsp30g = 8 tsp
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SIGN Key Questions…SIGN Key Questions…
Which dietary interventions are most effective in producing
and maintaining a 5kg/5% weight loss at
12 months ?
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Classification of diet typesClassification of diet types
Diet Type Description Commercial Example
Energy deficit or Low Energy Diet (LED)
600 kcal deficit diet Weight Watchers
Low fat diet (LF) <30% total daily energy from fat
Commercial Slimming organisations
Very Low Fat (VLF) <10% total daily energy from fat
Ornish and LEARN
Low Calorie (LCD) >800 – 1600 kcals/day
Weight WatchersWeight Watchers
/Slimming World/Slimming World
Very Low Calorie
(VLCD)
< 800 kcals/day Cambridge & Lighter Cambridge & Lighter Life (Liquids)Life (Liquids)
Low Carbohydrate, Protein Sparing
Modified Fast (PSMF)
<50g Carbohydrate/day
Atkins
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What is an energy deficit diet ?What is an energy deficit diet ?
Theory of energy deficit diet
Modify type, quantity, frequency of food and drink => hypo caloric intake.Weight loss 0.5 kg/ week = body fat loss 0.5 kg/ week => 3,500 kcals Requires energy deficit of at least 600 kcals per day.
Can be achieved by
•600kcal deficit, •low fat diets, •moderate energy prescription, •low or very low calorie diets, •protein-sparing modified fast•low carbohydrate low fat diets
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How effective is an energy deficit diet
A comprehensive HTA comparing various dietary interventions with a minimum of 12 months follow up.
Median weight change across 12 comparisons was –4.6 kg (range –0.60 kg to –7.20 kg) for a 600 kcal deficit diet or low-fat diet
+0.60 kg (range +2.40 kg to –1.30kg) for usual care.
. NICE Evidence table 15:14 (2006) 1++SIGN 115 (2010) 1++
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Which diet type is most effective in Which diet type is most effective in
achieving a 5kg weight loss targetachieving a 5kg weight loss target
Do they work ?
Low calorie diets (1,000-1,600 Kcal/day) and very low calorie diets (1000 Kcal/day) are associated with modest weight loss (5-6%) at 12 months follow up. 1++ Douketis, J.D., Macie, C., Thabane, L. and Williamson, D.F. (2005
Although VLCD are associated with greater weight loss in the short term (three to four months) this difference is not sustained at 12 months’ 1- Gilden, T. et al (2006)
Low Calorie Diets (LCD)
Which works best ?
Very Low Calorie Diets (VLCD)
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Low Fat Diets Low Carbohydrate diets
Do they work ?Both low carbohydrate (< 30 g/day) and low fat (< 30% of total daily energy intake from fat) diets are associated with modest weight loss (5kg) at 12 months. At six months there is significant difference in favour of low carbohydrate diets but this is not maintained at 12 months .Nordmann, A.J,(2006) 1++
Which works best ?
There was no significant difference between low fat diets and a range of other dietary interventions at 18 months’ Cochrane Review (2007) 1++
Which diet type is most effective in achieving a 5kg weight loss target ?
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A A RecommendationRecommendationDietary interventions for weight loss should be calculated to produce a Dietary interventions for weight loss should be calculated to produce a
600 Kcal/day energy deficit. 600 Kcal/day energy deficit. Programmes should be tailored to the dietary preferences of the Programmes should be tailored to the dietary preferences of the
individual patient.individual patient.
Good Practice PointGood Practice PointDiscussion around dietary change should emphasise achievable and Discussion around dietary change should emphasise achievable and
sustainable healthy eating.sustainable healthy eating.
DD Recommendation Recommendation
Where very low calorie diets are indicated for rapid weight loss, these Where very low calorie diets are indicated for rapid weight loss, these should be conducted under medical supervision.should be conducted under medical supervision.
Recommendations
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Dietary Advice inDietary Advice in GCWMS GCWMS
Personal Dietary PrescriptionPersonal Dietary Prescription Calculate Energy required – 600kcal 0.5kg Calculate Energy required – 600kcal 0.5kg
loss / weekloss / week Give portion list of 5 basic food groupsGive portion list of 5 basic food groups Balanced number of portions of each food Balanced number of portions of each food
group spread through out the daygroup spread through out the day Record daily intake and aim to match toRecord daily intake and aim to match to
Recommended prescriptionRecommended prescription
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600 kcal deficit diet
Example using the Mifflin equationExample using the Mifflin equation
Female 32 years oldFemale 32 years old
Weight 133kg Height: 1.68 mWeight 133kg Height: 1.68 m
(9.99 x weight in Kg) + (6.25 x height in cm) (9.99 x weight in Kg) + (6.25 x height in cm) - (4.92 x age) – 161 x 1.27 PAL- (4.92 x age) – 161 x 1.27 PAL
2616kcals – 600kcals = 2616kcals – 600kcals = 2016 kcals/day 2016 kcals/day
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Personalised Dietary Prescription of 2000 calories per day
Food Group Portions recommended per day
Starches 8
Fruit and Vegetables 88
Dairy 33
Meat, Fish & Alternatives
33
Fats (butter, low fat spreads, mayonnaise, ghee, salad creams)
33
Extras 200 calories200 calories
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20
2000 kcal
8 Portions
Fruit & Veg
8 Portions
Starch
Meat
3 Fat
3
Dairy
3
200 kcal
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22
2000 Calorie Day2000 Calorie DayBreakfastBreakfast
Starches Starches
DairyDairy
FatFat
FruitFruit
MeatMeat
1
1
1
1
+2
1/2
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23
StarchesStarches
DairyDairy
FatFat
Fruit & VegFruit & Veg
Meat/FishMeat/Fish
LunchLunch
2
1
1
1
+1
1 +1
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Whole Day 2000 CaloriesWhole Day 2000 Calories
8 Starch 8 Starch
8 Fruit & Veg 8 Fruit & Veg
3 Dairy 3 Dairy
3 Meat/Fish 3 Meat/Fish
3 Fat 3 Fat
Extras 200 kcalExtras 200 kcal
Total Portions
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Count the Portions or CaloriesCount the Portions or Calories
Ingredients1 medium sized baked potato
4 heaped dessertspoons baked beans Match box size piece of cheese (30g)
Salad optional
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Importance of Food DiariesImportance of Food Diaries
• Self monitoring is an Self monitoring is an important behavioural important behavioural strategy (O’Neill, 2001)strategy (O’Neill, 2001)
• Evidence to support Evidence to support those that have lost those that have lost weight and successfully weight and successfully maintained weight loss maintained weight loss for >2 yrs have regular for >2 yrs have regular self monitoring as a self monitoring as a feature (Colvin et al, feature (Colvin et al, 1983)1983)
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Phase 2Phase 2
Fail to lose 5kg through 600 kcal deficit diet and Fail to lose 5kg through 600 kcal deficit diet and portion controlportion control
Options: To try a structured Low Calorie Diet or Options: To try a structured Low Calorie Diet or medicationsmedications
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Structured Low Calorie DietStructured Low Calorie Diet
1200 calories per day • 300 calorie breakfast choices• 400 calorie lunch choices• 500 calorie evening meal, chosen from selection of protein, carbohydrate, vegetable and dessert options
1500 calories per day
As above but also includes 100 calorie snacks, up to 3 per day.
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LCD & Meal replacementsLCD & Meal replacements
Low Calorie Diet may also include the use of Meal Replacement supplements e.g.
SlimfastBuild-Up ComplanSupermarket own brands
These can be used instead of breakfast and/or lunch, if it fits in with your lifestyle.
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ResourcesResources
Food DiariesPortion bookletsSample menusRecipesManualsLabel reading guides
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Current dialogue/debateCurrent dialogue/debate
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Sweden’s new dietary Sweden’s new dietary guidelinesguidelines
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Dietary approaches – key pointsDietary approaches – key points
• Understand the position at the beginning of treatment through a comprehensive assessment
• Stabilise eating pattern
• Improve the nutritional quality of the diet
• Achieve negative energy balance
• Promote self-monitoring
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Thank you
Amanda Hallson (RD)
Greater Glasgow & Clyde Weight Management Service
Tel: (0141) 201-6155
Email: [email protected]
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ReferencesReferences• British Dietetic Association (1997) Position Paper – Obesity treatment: future British Dietetic Association (1997) Position Paper – Obesity treatment: future
directions for the contribution of dietitians. directions for the contribution of dietitians. Journal of Human Nutrition and Dietetics Journal of Human Nutrition and Dietetics 10, 95-10110, 95-101
• Freedman M.R, King J and Kennedy E (2001) Popular Diets: A Scientific Review. Freedman M.R, King J and Kennedy E (2001) Popular Diets: A Scientific Review. Obesity Research 9 Suppl.1 March Obesity Research 9 Suppl.1 March
• Department of Nutrition Harvard School of Public Health available online at: Department of Nutrition Harvard School of Public Health available online at: http://www.hsph.harvard.edu/http://www.hsph.harvard.edu/
• Haslam D. W and James W.P.T (2005).Haslam D. W and James W.P.T (2005). Obesity.Obesity. The LancetThe Lancet 366:1197-209. 366:1197-209.• NDR 2012 (Nutrition and Diet resources) NDR 2012 (Nutrition and Diet resources) Weight loss you can see on a plateWeight loss you can see on a plate• NHS Health Development Agency (2003). The Management of obesity and NHS Health Development Agency (2003). The Management of obesity and
overweight. Available online at: overweight. Available online at: www.hda.nhs.ukwww.hda.nhs.uk• NICE – guidelines for obesity in final consultation phase (2006) Available online at: NICE – guidelines for obesity in final consultation phase (2006) Available online at:
www.publichealth.nice.org.ukwww.publichealth.nice.org.uk • PHEL – Public Health Electronic Library available online at: PHEL – Public Health Electronic Library available online at: www.phel.gov.ukwww.phel.gov.uk• The Cochrane Collaboration – Available online at: The Cochrane Collaboration – Available online at: www.cochrane.org/reviewswww.cochrane.org/reviews • SIGN 115 (2010)SIGN 115 (2010)