### Description

A ketogenic diet to help control seizures can be calculated based on a person's age, gender and weight.

Steps:

(1) Determine the daily caloric intake for the patient.

(2) Decide on the ratio of fat intake in grams to other nutrients.

Ratio

Grams Fat

Kcals from Fat

Grams Protein and Carbohydrate

Kcals from Protein and Carbohydrate

4:1

4

39

1

4

3:1

3

27

1

4

2:1

2

18

1

4

where:

• 1 gram fat provides 9 Kcals; 1 gram of protein or carbohydrate provides 4 Kcal

For the diets:

total caloric intake in Kcal per day =

= ((grams of protein and carbohydrate) * (4 Kcal per gram)) + ((ratio factor for fat) * (grams of protein and carbohydrate) * (9 Kcal per gram fat))

Ratio

Daily Grams Fat

Daily Grams of Protein and Carbohydrate

4:1

4 * (total calories) / 40

(total calories) / 40

3:1

3 * (total calories) / 31

(total calories) / 31

2:1

2 * (total calories) / 22

(total calories) / 22

Sometimes corn oil is used as the source of fat. This has a caloric value of 8 Kcal per gram. If this is used, the assigned number of fat grams need to be multiplied by 1.125.

The protein intake should be at least the minimum recommended in the RDA.

Minimum Protein Intake in g/kg per day

Age of the Patient

Male

Female

< 6 months

2.2

2.2

6 -12 months

1.6

1.6

1 - 3 years

1.2

1.2

4 - 6 years

1.1

1.1

7 - 10 years

1.0

1.0

11 - 14 years

1.0

1.0

15 - 18 years

0.9

0.8

19 - 24 years

0.8

0.8

25 - 50 years

0.8

0.8

>= 51 years

0.8

0.8

from RDA 10th Edition

grams of carbohydrate per day =

= (daily grams of protein and carbohydrate) - (daily protein intake in grams)

Once the total intake for fats, carbohydrates and protein has been calculated, then the calories are distributed into 3 meals and the snacks taken.

To read more or access our algorithms and calculators, please log in or register.