Whey protein

Whey is the liquid remaining after milk has been curdled and strained and is the primary ingredient in most protein powders.

When looking at purchasing some whey there are often 2 or 3 different choices. The most common types are whey concentrate and whey isolate.

  • Whey concentrate contains both fat and carbohydrates & usually 80% protein.
  • Whey isolate has been processed more than whey concentrate to remove the fat and lactose and is 90%+ protein. Because it has been processed more than whey concentrate, it is often more expensive.  

It is worth remembering whey is naturally low in fat & carbohydrates - when comparing a major supplement retailer, there is only one major difference and that is the price!

(per serving)

Concentrate

Isolate

Kcal

103kcal

93kcal

Fat 

1.9g

0.1g

Carbohydrates

1g

0.6g

Protein

21g

23g

Price

£11.96 (1kg)

£22.99 (1kg)

Whey is most commonly used in protein shakes, which can be a very easy and low calorie way of ensuring that you consume sufficient protein. Whether this be part of a meal or as a convenience tool. 

However, a protein shake is still a supplement and therefore should only be used as a supplement to your diet and not form a major part of your diet or protein intake. 

Supplements are often expensive per gram of protein in comparison to food!