Out of all the protein supplements available, whey protein is one of the most popular. There are different forms of whey protein, so naturally, people have questions about which form is best for them.
One of the most common questions about whey protein is if whey isolate is better than other forms of whey. This article will explore what whey isolate is, how it compares to other forms of whey protein, and will explain which forms are best for different needs.
What is Whey Isolate?
Whey isolate is a type of whey protein that has been processed in a way that removes a significant amount of the fat and lactose, unlike regular whey protein. The product that remains is a more concentrated form of protein. In fact, it’s at least 90% protein by weight (1).
To make whey isolate, there are more steps involved compared to other forms of why like whey concentrate. The additional filtration steps yield a more pure and concentrated form of protein.
Is Isolate Better Than Whey Protein?
The question "Is isolate better than whey protein?" is a bit misleading because whey isolate is a type of whey protein. Instead, the real question should be whether or not whey isolate is better than other forms of whey protein such as whey concentrate.
Often, whey isolate is considered superior to whey concentrate due to its high protein content and low levels of carbohydrates and fats. However, the better option really comes down to what someone’s specific goals are. After all, the best whey protein for one person may not be the best for another.
For example, athletes and bodybuilders who are aiming to increase protein intake while also ensuring adequate carbohydrates may benefit from whey concentrate (2).
On the other hand, someone who is lactose intolerant may opt for whey isolate instead since it would be easier for them to digest.
What are the Drawbacks of Whey Protein Isolate?
It’s important to weigh the pros and cons before making a decision on which whey protein is best for you. One major drawback of whey isolate is that it’s expensive. Whey isolate is considerably more expensive than whey concentrate due to the additional processing and filtering it must undergo. For those who are on a budget, whey isolate may be less realistic.
Additionally, whey isolate lacks some beneficial nutrients, since many of them are removed during processing. For example, whey isolate doesn’t contain many of the bioactive peptides which may help boost the immune system and strengthen the gut lining (3).
While whey isolate is a fantastic and pure source of protein, it definitely lacks some of the holistic benefits that whey protein can offer in other forms.
Who Should Take Whey Protein Isolate?
There are many individuals who may benefit from choosing whey protein isolate.
Individuals who need to follow a high-protein, low-fat, and low-carbohydrate diet may benefit most from whey isolate. Whether you are following a particular diet for medical reasons, or need to boost muscle recovery with minimal added calories from fats and carbs, whey isolate is a good choice.
As noted earlier, whey isolate is also a good choice for those who are lactose intolerant. Whey concentrate contains lactose which can cause unpleasant digestive symptoms if you’re lactose intolerant. While of course you could choose to take a digestive enzyme, it might be easier to opt for the low lactose option: whey isolate.
Whey Protein Isolate and Lactose
Lactose intolerance affects many people around the world and causes digestive upset after eating products that contain lactose.
Since whey isolate undergoes a more rigorous processing method, most of the lactose is removed, making it a more suitable option for those with mild lactose intolerance (4).
However, those with more severe lactose intolerance should definitely exercise caution as whey isolate is not completely lactose-free. While it contains much less lactose than whey concentrate, there are likely trace amounts that may cause symptoms in sensitive individuals.
If you’re someone with more severe lactose intolerance, or perhaps have a dairy allergy, you should choose completely lactose-free protein options like plant-based proteins.
Whey Protein Concentrate vs Isolate: What's the Difference?
The main difference between whey protein concentrate and whey protein isolate is the protein content and presence of other macronutrients.
Whey protein concentrate is about 70-80% protein, with the remaining 20-30% consisting of fat and carbohydrates. Lactose is included in the carbohydrate component, along with some other bioactive compounds (2).
On the other hand, whey protein isolate contains approximately 90% protein with small amounts of fats and carbohydrates. The processing that whey isolate undergoes yields a lower percentage of non-protein compounds, so it truly is a pure protein supplement (2).
Choosing between whey concentrate and isolate depends on your individual goals and needs. Both options will help increase protein in your diet, with one option providing more pure protein while the other provides some additional nutrients.
Who is Whey Concentrate Better For?
Whey concentrate is better for people who are looking for a more affordable protein option, and for those who are not sensitive to lactose. It’s also a great idea for those who may benefit from some additional carbohydrates, fats, and beneficial bioactive compounds.
Many people may be quick to fear additional carbohydrates in a protein supplement, however, consuming carbohydrates along with protein after a workout is actually ideal for muscle growth and repair. The carbohydrates too can help replenish depleted glycogen stores after exercise.
Key Takeaways
Whey isolate is not necessarily better than whey concentrate, as it depends on your individual needs, goals, and budget. Whey isolate is a more processed form of whey protein that is mostly protein with low levels of fat and lactose. However, whey isolate is more expensive than other forms of whey, making it unrealistic for some people.
Plus, it lacks certain beneficial nutrients that whey concentrate can provide. On the other hand, whey concentrate is more affordable and retains beneficial nutrients. Whey concentrate contains lactose which is not ideal for people who are lactose intolerant or sensitive to dairy. Regardless of the whey you choose, both are helpful in increasing your daily protein intake.
