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Chris Hemsworth: Steroids or Natural?

Chris Hemsworth is an actor known for his roles in Thor and Ca$h. Some people think he’s used steroids for his signature physique. Did he?

Chris Hemsworth steroids

Did actor Chris Hemsworth use anabolic steroids to get in shape for his role as Thor? Many of you asked us to find out if he did. Today we’re going to find out if the actor juiced to become an Asgardian.

The bodybuilding forums seem to know the actor has had help from performance-enhancing drugs. The most common argument is “he packed on too much mass”. However, just this argument is not convincing enough to conclude he’s using steroids.

Pointing at someone their muscle mass and claiming they must be on steroids is not enough evidence. Many individual aspects such as genetics are of importance. Every athlete has their limits.

For example, there are guys that workout for 20 years and still have similar physiques to genetically blessed teenagers like Mike Thurston.

What people tend to forget is that factors like genetics largely determine bodybuilding. Unfortunately, hard work will allow you to build the best version of yourself, but it won’t turn okay genetics into great genetics.

Does Chris Hemsworth fall into the super genetics category or did he get help from steroids?

Gains Timeline

Chris added around twenty pounds of muscle mass before featuring in Thor.

A great way to detect steroid use is analysing a bodybuilder their gains throughout the years. A ‘gains timeline’ can help us find a moment when someone suddenly packed on a lot of mass out of nowhere. If the gains don’t match the usual time frame needed steroid use is likely.

Firstly, let’s check how Chris Hemsworth looked before Thor. The picture below is from Ca$h, one of his previous movies.

Chris Hemsworth Ca$h

Although not as ripped as in Thor, he has some muscle mass. What surprises us is that in an interview with Men’s Health he says he didn’t lift before Thor.

This statement leaves us with the question: How did he gain his mass for Ca$h?

Amazing Genetics 

If what he told Men’s Health is true he was muscular before he started lifting weights. Then if we look at a picture of him from Thor, we estimate he’s packed on around 20 pounds of muscle. These gains comply with what experts consider to be possible for first-time lifters.

Chris Hemsworth would’ve been able to pack on 30-50 pounds of muscle between Ca$h and Thor if he’d used steroids.

Therefore, we have to conclude that if what he say’s about his first time lifting the gains he made between these two movies are most likely natural. However, he must’ve amazing genetics since he already looked pretty muscular in Cas$h.

Furthermore, if you look at 2007 Chris Hemsworth vs Chris Hemsworth in Thor, you’ll notice that given the 4-year time frame the gains don’t seem artificial.

chris hemsworth home and away


Chris Hemsworth gained quite some muscle for the movie Thor. When we take into consideration the fact that he already had a right amount of tissue due to genetics, and he first started lifting in preparation for Thor, we must conclude that it’s very likely that these are natural gains.

Furthermore, he didn’t gain an explosive amount of muscle mass out of the blue, and he doesn’t show any typical side effects from steroid use. Chris Hemsworth has no gynecomastia, bloating, dry/ flushed skin, bald spots, steroid jaw, etc.

Considering earlier physiques, we think that if Chris had used steroids, he wouldn’t have gained just twenty pounds of muscle, around 40 pounds would be likely.

God, we wish we had this guy’s genetics.

About James Smith

James Smith is a personal trainer for professional bodybuilders. He uses his experience, knowledge, and understanding of all the intricacies regarding bodybuilding and anabolic steroids, to deliver detailed reviews for every new legal steroid on the market. As an author, he may receive some small compensation for some of them. However, we guarantee the neutrality regarding the evaluating of each of the products and the factuality of the information.