Protein powder is usually mentioned in the context of growth and maintenance of muscle.
However, many people are increasingly catching onto the fact that a protein is also found in meal replacement products.
It is therefore vital that you chose the best protein powder, as traditional protein powders can often be high in carbs and calories.
The most famous of the diets is the keto, or ketogenic diet, which involves high fat, an adequate amount of protein and low carbs.
It is named after the process that goes on in the body when you strictly limit carbohydrates.
The body goes into ketosis, meaning it starts burning fat rather than carbs.
If discussed first with your doctor and followed responsibly, a keto diet can be a great way to kick-start your metabolism.
This is where diet protein shakes can really help. They can act as a meal replacement or on-the-go snack to stop you from breaking your diet when it is hard to find carb-free food.
When it comes to diet protein powders versus traditional protein powders, it is important to know a little about the nutrition behind it.
Take one of the most popular protein powder brands, USN, for example. Their regular chocolate protein powder provides a massive 53g of protein in each serving, but also 77g of carbohydrates. It is designed to help people gain muscle and weight.
Meanwhile, USN diet whey protein, known as USN Diet Fuel, has 25g of protein per serving, but just 17g of carbs.
Similarly, USN Diet Fuel vegan protein powders have 26g protein and 19g of carbs. The USN diet protein range also includes an ultra low-carb range that is perfect for those following a strict keto diet.
USN Diet Whey Isolean, which comes in cookies & cream flavour, battenberg, peanut butter, cherry bakewell or strawberry cheesecake flavours contains 25g of protein and a minute 1.5g of carbohydrates per serving
Optimum Nutrition Opti-Lean Whey Powder not only comes in chocolate, strawberry or vanilla flavours, but you can buy any of them in two sizes of packets.
This makes it a great option for those new to diet protein powder, as you do not have to commit to the enormous tubs of protein powder, which can be a pricey investment.
With 20g of protein and 1.4g of carbohydrates, it is great for a keto diet, and it benefits from having green tea powder in it, giving you energy from natural caffeine.
Another brand that contains natural energy powerhouses green tea and guarana is Slender Blend.
One of their most popular flavours is Slender Blend Salted Caramel, which is so delicious you could forget you are actually dieting!
We love PHD diet whey powder, which is also high-protein and low-carb, as it comes in such fabulous flavours.
One of its most famous is the birthday cake protein powder, but there is also banana, belgian chocolate, chocolate peanut, cookies & cream, salted caramel, and chocolate & raspberry, as well as the standard flavours of strawberry, vanilla and chocolate.
PE Nutrition from Holland & Barrett, offers a range of products to help with muscle growth, maintenance and athletic performance.