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Dietary Management by Prof. Morsi Arab

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Dietary management by prof morsi arab l.jpg

Dietary ManagementbyProf. Morsi Arab


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Diet ManagementGoals :1- to restore glycaemic control and optimal lipid levels 2- adequate needs for growth , pregnancy , lactation 3- body weight management 4- keep overall health 5- coordinate with individual life style


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Total Caloric Intake1- Calculate needs acc. to daily activity .2- and to manage body weight :↓ or ↑ to reach optimum BMI (< 25 )3- Special considerations in growing children -------------------------------------------------------------4- Caloric restriction improves glycaemic control-------------------------------------------------------------------


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Total Caloric Intake( cont.)5- Total caloric content = sum of cal/gm:(gm CHO x 4 ) + ( gm fat x 9) + ( gm protein x 4)6- Caloric distribution ( %) : CHO / Fat / Prot( CHO : 50-70%) / ( fat 20-25% ) / (protein 15 %)


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CHO Content (quantity and quality)* Total CHO ≈ 50-60 % of total calories - complex CHO = > 70 % - simple CHO = < 10 % * Example : If total calories allowed = 1500 cal.:- Then CHO content = 1500 X 60% = 900 cal.


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CHO Content (quantity and quality)Complex CHO = 70 % x 900 = 630 cal ≈ 160 gm Sugars < 10 % x 900 = 90 cal ≈ 22 gmComplex CHO : with low G / l : grains-legumes-pasta-whole grain bread-boiled riceSimple CHO : refined sugars , fruit sugars


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Fat Content* Fat restriction : helps control displipidemia and hyperglycemia. Control body weight* Total fat content : > 30% of total calories - polyunsaturated ( plant oil ) 10% - monounsaturated (olive oil ) 10 % - saturated : ( animal fat < 10%) * Essential fatty acid supplements ( soya beans, nuts, rapeseed oils)* Omega 3 fat ( fish) anti athirogenic ( 2.3 fish meals/wk or fish oil caps 0.3 g)* Total Cholesterol (< 300 mg )


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Protein* Average total protein content: 15% of total calories ( 12-20%) e.g. in total 2000 cal :15%= 300 cal.= 75 gm prot. * Or ( 0.8-1.2 gm/kg body weight) * Animal and plant proteins ( essential amino acids)------------------------------------------------------------------- * Protein restriction in renal function impairment * Allow for : growth , pregnancy , lactation, acute catabolic states, wound healing


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Fibre ( undigested parts of diet )Types :Soluble insoluble (pectins , gums ( cellulose, semi-cellulose, gel. , mucilage ) legnins ↓ ↓ Effects: metabolic effect increase bulk ( CHO & lipid) ----------------------------------------------------------------------------Recommendation : - double the av. normal intake ( 13- 30 gm) - gradual increase to avoid flatulence - include both sol. & insoluble


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An Example in Diet Construction:1- if a Pt needs daily requirement = 2500 calories 2- and is overweight ( BMI = 35 ) Goal : to lower body weight by 1kg/ wk ( 1 kg loss requires loss of 7000 calories i.e. 1000 /day X 7 ) 3-  subtract from his intake 1000 calories / day 4-  daily intake : 2500 -1000 = 1500 calories


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An Example in Diet Construction:5- To distribute the 1500 calories :- e.g.60% CHO + 24 % fat + 16 % protein = 100 %(900 cal.) (360 cal.) (240 cal.)↓ ↓ ↓ ( 225 gm ) ( 40 gm ) ( 60 gm ) CHO fat protein


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Standard Body Weight Control by DietaryRestriction* Goal : loose 1 Kg b. weight per week * plan / calculation: 1 kg/ wk = 7000 cal. deficit /wk = 1000 cal. deficit / day lower caloric intake by 1000 cal/day less than daily need e.g. : 2500-1000 = 1500 cal./ day


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Stringent diet restriction :- total cal. Intake : 400-600 cal./day - only for patients with very high BMI - requires hospital monitoring (electrolytes, E.C.G., etc)- note : provide protein content , vitamin and mineral requirements.


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Body Weight Control by exercise*Exercise supplements diet restrictions to control body weight and → more lasting effect* Additional value for exercise : 1- ↓ hyperglycemia 2- ↓ CHD risk factors .


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Body Weight Control by exercise ( cont.)* Calculating expenditure of energy by walking: - is related to “body weight” and “distance” ( not to speed of walking ). - e.g.: a 70 kg person walking for one mile spends 100 cal. ( increases if more body weight , or walking uphill )


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Sugar Substitutes , SweetenersThe Ideal : Sweetening power, taste, cost, side effects, consistency & form, heat stability ,caloric content.Types : * Natural : fructose - sorbitol - manitol - xylose * Synthetic : saccharin - aspartame


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Sugar Substitutes , Sweeteners


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Fat Substitute


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Alexandrie – Palais du Montazah

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