Casein Protein vs Whey Protein for weight gain – Dose casein powder makes any difference?

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Written By Samarjit Sinha

Working out for 10 years | Has a home gym | CPD (UK) Certificate holder in Fitness

Casein protein vs whey protein for weight gain – whey vs casein

Whey protein is a type of protein that is derived from milk. It is the most popular form of protein supplement and is quickly absorbed by your body, providing a fast dose of amino acids and extra calories needed to build lean muscle. 

Casein protein powders, on the other hand, is a slow-digesting protein that provides your body with a steady stream of amino acids over an extended period of time.

This makes it ideal for those who want to maintain or gain muscle mass.

Casein Protein vs Whey Protein for weight gain

Few other points: 

Whey protein powder is a fast-digesting protein that rapidly floods the bloodstream with amino acids. This makes whey protein an ideal post-workout supplement as it helps muscles recover and grow faster. 

Casein is often used as a night time protein, to keep a sustained flow of protein to the muscle.

So, which one is better for weight gain? The answer depends on your individual dietary needs and preferences.

Pro athletes will choose both.

Casein for the night and rest of the time its just use whey all day long.

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Arguments to help you selecting your protein for weight gain

Casein protein powder absorbs slower than whey protein powder

When you consume protein, your body breaks it down into small molecules called amino acids. 

These amino acids circulate in your bloodstream until they’re absorbed by the cells that need them. Levels of these amino acids stay elevated in your blood for four to five hours after you consume casein, but only 90 minutes after you consume whey. 

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And that is why whey is popular as a post workout drink. You would want the protein to reach your muscles as quickly as possible.

Casein forms curds once exposed to the acids in your stomach. These curds lengthen your body’s digestion and absorption processes, meaning that it takes longer for your body to absorb casein than whey.

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Both casein and whey proteins are effective for weight gain, casein protein has some unique benefits. Casein has bioactive compounds that can improve gut health and digestion. 

Additionally, casein protein helps your body retain muscle and keep you full while you sleep. The slower absorption of casein protein may lead to slower weight gain results when using it as a source of protein in the diet; however, this should not dissuade you from using casein protein as part of your weight-gaining strategy.

However, whey with its high amount of leucine and fast absorption rate is way better than casein for weight gain. Provided that you are pushing yourself in the gym as well.

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Whey Protein Can provide Better Muscle Growth

Whey protein is quickly absorbed by the body, making it better suited for use during and after workouts. It contains more branched-chain amino acids (BCAAs) than casein protein, which makes it more important for muscle building.

Casein protein is not as effective as whey for this purpose because its absorption rate is slower and it has a low concentration of BCAAs.

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Whey also have high amount of leucine which is essential for muscle growth.

Although whey protein is known to stimulate the muscle building process more than casein, both proteins are important for gaining muscle mass.

In order to achieve the best results, it’s important that you consume a variety of high-quality protein sources over the course of each day.

This will help ensure that your body has all the essential amino acids it needs to build muscle.

You might want to buy whey protein powders and eat milk or paneer at night to get casein protein as well.

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Casein Protein vs Whey Protein for weight gain - Dose casein powder makes any difference? 1

Whey vs Casein – Which is more expensive

In India, casein and whey are almost similarly priced. Casein often costs a little less than whey. But the margin is very small.

With that small margin, you will always obviously choose whey instead of casein.

However, if you are a pro-level athlete and have enough money, then go for casein at bedtime and whey for all other times.

If you are short on money and want to build muscle and gain weight, then pick whey.

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Casein or Whey Have Better Macro-Nutrients in comparison

There are many different types of protein powders on the market, but two of the most common are whey and casein. Whey protein is derived from milk and is high in the branched-chain amino acids (BCAAs) leucine, isoleucine and valine. Casein, which is also derived from milk, contains a higher portion of the amino acids histidine, methionine and phenylalanine.

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Whey has a lot of leucine, which helps to grow muscle quickly.

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Whey and Casein Protein Benefits!

The two best protein are whey and casein and both come from milk. Both of these are complete protein as well.

They both have very similar benefits, but it ultimately depends on the individual and their specific goals as to which one would be best for them.

Complete proteins are important for the body as they contain all the essential amino acids that the body cannot produce on its own. 

Whey protein is a complete protein and is better than casein protein for muscle gain. However, when used together, whey and casein proteins can help boost muscle growth and prevent muscle breakdown.

While both protein benefits are similar, whey digests faster and for that whey always comes on top while selecting protein for muscle growth and weight gain.

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About The Skinny Author


Working Out for 10 years | Owns a home gym |Certificate course done on Improving Aerobic Fitness, Diet | CPD (UK) Accredited Certification on Fitness

Yo Friends, this is Samarjit! A skinny guy who is building his tiny home gym.

I have successfully gained 10 kgs in 10 months going to commercial gyms. And I have been working out on and off for about 10+ years now.

I have gone swimming, done martial arts, Olympic lifts and body-building-type workouts!

I canceled the gym subscription as I was more into making my home gym for workouts. And getting ready, then getting my cycle and ride to the commercial gym seemed a drag after 10 hours in the office.

Thus, I needed a home that I could access at any moment!
And I started building my home gym!

I had to research a lot to build my home gym and decided to share effective, budget-friendly home gym machines, and nutrition to buy as per your goals here in

If you have question then contact me here

Ps: The author is highly experienced with making small workout routines, understanding and guiding people to get gym equipment, and setting up the home gym as per their Fitness goals.

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