Weight management – the role of protein and fibre

Fibre

Over the past few decades, dietary fibre has been extensively studied and has been found to play an essential role in maintaining optimal health and wellbeing. A high fibre intake has been linked with blood glucose control, weight maintenance and digestive health and there is a wealth of information to support the recommendation for Australians to consume an adequate amount of dietary fibre from a variety of sources. Current Australian recommendations for daily fibre intake are shown in Table 1. A diet rich in fibre-containing foods is usually also rich in a variety of nutrients such as magnesium, which have additional health benefits. A meal that is rich in fibre also tends to be digested more slowly, increasing the sensation of fullness. A number of McCain Healthy Choice meals provide up to a third of a person’s daily fibre intake. These meals are shown in Table 3.

Table 1: Adequate Intakes (AIs) for fibre are as follows:
Men 19-70 years 30 grams
Women 19-70 years 25 grams
Men 70+ years 30 grams
Women 70+ years 25 grams
   
Children 1-3 years 14 grams
Children 4-8 years 18 grams
Boys 9-13 years 24 grams
Girls 9-13 years 20 grams
Boys 14-18 years 28 grams
Girls 14-18 years 22 grams
 

Protein

Protein intake at a meal can increase feelings of fullness and can also aid in bodyweight maintenance due to its effect on preserving muscle mass. Research has shown that the protein content of a food can determine how satisfied someone feels immediately after eating and the protein content of a meal can also influence how much food a person eats. Due to its effect on satiety, research also shows that a high intake of dietary protein limits body weight gain. Many of the McCain Healthy Choice meals provide almost half the daily intake for protein. Table 2 shows the Australian recommended daily intake for protein while Table 3 shows the McCain Healthy Choice meals that are high in fibre and Table 4 shows those that are highest in protein.

Table 2: Recommended daily intakes (RDI) for protein:
Men 19-70 years 64 grams
Women 19-70 years 46 grams
Men 70+ years 81 grams
Women 70+ years 57 grams
   
Children 1-3 years 14 grams
Children 4-8 years 20 grams
Boys 9-13 years 40 grams
Girls 9-13 years 35 grams
Boys 14-18 years 65 grams
Girls 14-18 years 45 grams
 
Table 3: McCain’s Healthy Choice meals with the highest fibre content per serve
High fibre Fibre (g)
Beef Lasagne 9.6
Semi-dried Tomato & Spinach Pasta 8.8
Honey Stirfry Chicken 8.8
Beef Hot Pot 8.4
Creamy Chicken Pasta 8.4
Prawn Fettuccine 8.4
Beef Florentine 8
Beef Medallions 7.4
Tender Beef in Light Seeded Mustard Sauce 6.8
Chargrilled Chicken in Mango Sauce 6.1
Honey Sesame Chicken 6.0
 
Table 4: McCain’s Healthy Choice meals with the highest protein content per serve
High protein Protein (g)
Creamy Chicken Pasta 27
Beef Lasagne 26
Chinese BBQ Chicken 24.5
Creamy Chicken Carbonara 23.8
Beef Hot Pot 23
Spaghetti Bolognese 22
Prawn Fettuccine 21
 

Key messages:

  • Fibre and protein can help to promote satiety after a meal
  • Fibre and protein may both play a role in weight maintenance
  • Fibre intake has been associated with optimal long term health