Can You Shrink And Grow Like Ant-Man Without Any Real Consequences?

Table of Contents (click to expand)

The idea of shrinking is scientifically not plausible, because to shrink something, you would have to decrease the distance between atoms, but atoms are the smallest particles. You cannot reduce the distance between atoms, as they are already at their smallest possible size.

If I ask anyone the name of their favorite superhero, their answer would most likely be Batman, Superman or Ironman. That was certainly true for me… until I saw Ant-Man!

All the other superheroes can put up a good fight, but Ant-man could bring about global peace. If shrinking technology existed, countless major problems in the world would be solved.

Ant-Man from the famous Marvel movie. (Photo Credit : Ant-Man/ Marvel Entertainment)

Caption:  (Photo Credit: Marvel Studios)

Make a Lego house, shrink yourself and live in it; housing crisis solved. Take any food and blow it up; now you have an infinite amount of food; hunger problem solved. As wild as that sounds, would it even be possible to shrink or expand like Ant-man, without any consequences?

Short Answer: No


Because physics won’t allow it. To make it possible, you would have to break fundamental laws of the universe. One such law is:

Mass= Density*Volume

So, two things can happen when Ant-Man shrinks, given that the volume has decreased: either Ant-Man can keep his mass the same and change his density, or he can keep his density constant and change his mass every time he shrinks or expands. Let’s examine the cases individually.

Mass Remains The Same And Density Changes

Basically, having the same mass in an ant’s body would make you very, very dense. For perspective, imagine something 150,000 times denser than the densest material on earth, Osmium. It would be 2.8 million times denser than the average human body’s density. Imagine exerting all your weight on one pixel of the mobile phone or computer you are reading this article on… you would break it immediately.

Ant-Man wouldn’t have mobility at this density, as shown in the movie. He wouldn’t be jumping around and ninja fighting his enemies; on the contrary, he would have trouble just lifting his feet off the ground. Ant-Man would collapse under his own weight and have no choice but to live a paralyzed life.

Also Read: What Would Happen If Ant-Man Were Real?

Density Remains Constant And Mass Changes

In the movie, Scott Lang, who is Ant-Man, weighs around 86 kg and is 1.8 meters tall, as mentioned on the Marvel website. Keeping the density constant at 1000 kg/m3 Ant-Man would weigh just 30 milligrams when reduced to the size of an ant. A light breeze would carry him away; a sneeze could prove deadly to him. Yet these are minor inconveniences in the superhero world.

The bigger question is what happens to the remaining weight when Ant-Man gets reduced to 30mg. Does he store it in a box, or is the mass converted into energy using Einstein’s equation of E=mc2. Putting m=86kgs and c=3×108 m/s, the energy dissipated would be around 7×1018 joules, which would be enough power to run India’s grid for 6 months.

This idea seems even more improbable now.

Other Big Problems For Ant-Man

The new smaller size would affect every biological aspect of Ant-Man’s body, which brings up another wave of problems. When Ant-Man shrinks, his vocal cords shrink too; the reduced length of the vocal cords result in higher frequency sounds in the range of 12 to 26kHz.

Most of this range is inaudible to our ears, and even if it was audible, it would sound like the buzzing of insects we often hear. So, unlike the movie, Ant-Man wouldn’t be able to communicate with other human beings in real life, at least not vocally.

Another issue is maintaining body temperature; Ant-Man needs energy to ensure that his body functions properly. As body heat is directly proportional to mass, Ant-Man would need to increase his metabolic rate by dramatically increasing his food intake.

In fact, Ant-Man would have to eat his entire body weight everyday just to stay alive. He would have to constantly keep eating to avoid dying in his sleep. So if Ant-Man is perpetually stuck at an all-day buffet, when will he find the time to fight Thanos?

i am on seafood diet

Also Read: What’s The Biggest Scientific Mistake In Ant-Man?


The idea of shrinking is scientifically implausible because to shrink something, you would have to decrease the distance between atoms, but atoms are already the smallest particles. You cannot reduce the distance between atoms, as they are already at their smallest possible size.

Another probable solution would be removing atoms. We are made of trillions of atoms, so it is theoretically possible to make Ant-Man with a smaller number of atoms, but this process has some real limitations. You could reduce the size of Ant-Man from 6 feet to 5 feet 7 inches, but reducing him to the size of an ant would compromise all of his biological processes. Ant-Man wouldn’t remain a “man” at all, just a barely functioning blob of atoms without much hope of survival!

How well do you understand the article above!

Can you answer a few questions based on the article you just read?

References (click to expand)
  1. The Biology of B-Movie Monsters - The Fathom Archive. The University of Chicago
  2. Normal Voice Function | Sean Parker Institute for the Voice. Cornell University
  3. Savage, V. M., Allen, A. P., Brown, J. H., Gillooly, J. F., Herman, A. B., Woodruff, W. H., & West, G. B. (2007, March 13). Scaling of number, size, and metabolic rate of cells with body size in mammals. Proceedings of the National Academy of Sciences. Proceedings of the National Academy of Sciences.
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About the Author

Jyotirmoy Gupta graduated from IIT Kharagpur with a degree in Instrumentation engineering. Fascinated by everything science, from pure sciences to social sciences; he is on a constant lookout to read or watch something new. In his free time, you will either find him watching documentaries or making one.