Carter Rubin’s Weight Loss Journey (Diet & Exercise Exposed)

Benedict Ang, CPT, PN1-NC
Published by Benedict Ang, CPT, PN1-NC | Staff Writer & Senior Coach
Last updated: December 8, 2023
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Carter Rubin was the youngest male winner of the American reality talent competition - The Voice.

People remember the 15-year-old Carter as the cute chubby kid with a fantastic voice in the Voice season 19. However, his recent appearance in season 21 revealed his body transformation and shocked almost everyone.

And really, when I checked his before and after photos, I almost couldn’t recognize him. That's why we spent a few days researching Carter Rubin's weight loss details to determine whether the transformation happened thanks to surgery or some lifestyle changes.

Carter Rubin Weight Loss

Even though The Voice winner Carter Rubin isn't a fan of bragging about his weight loss, we speculate, based on his physique, he made considerable efforts to improve his appearance.

Considering he is a teenager (17 years old), his body is still going through various changes, so we assume these natural body transformations also contributed to his weight loss.


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A post shared by Carter Rubin (@carterjrubin)

We made that assumption by comparing his before and after Instagram pictures.

We have an impression that besides losing a few inches in the waist, Carter Rubin also grew a few inches in height.

Nevertheless, being very humble about his transformation, we had difficulty discovering Carter Rubin's weight loss details and methods.


  • Born: October 11, 2005
  • Height: 5'2"
  • Starting weight: 105.82 lbs
  • Total weight loss: 22 lbs

Did Carter Rubin Have Surgery?

Middle of surgery session

No, Carter Rubin didn't have surgery to lose weight.

We concluded Carter Rubin's weight loss transformation didn't happen overnight, and we couldn't find anything about him ever mentioning something on his social media or interviews.

Despite the quick fixes offered by modern surgeries, we're convinced he shed his baby fat the old-fashioned way.

Given his young age, it's likely he steered clear of surgery. His transformation suggests a focus on a healthy diet was key.

What's His Diet?

Carter Rubin probably eats a whole-food diet, with significant portions of fruits, fat-burning vegetables, whole grains, and animal sources of protein-rich foods.

Carter Rubin is still young, and strict diets like keto or intermittent fasting wouldn't be necessary. 

Judging by his earlier look, Carter's diet before his fame probably mainly consisted of processed and sugary foods full of empty calories and unhealthy ingredients.

Switching to meals similar to the Paleo diet would mean the singer's body changed how it used calories and was replenished with healthy macro and micronutrients, gradually contributing to stunning Carter Rubin's weight loss journey.

What's His Exercise Routine?

carter rubin's weight loss exercise routine

We couldn't find anything about his exercise routine for weight loss, but looking at his muscle tone, we would say he didn't even implement any.

Considering his age, small changes like being more active every day (walking, climbing stairs) have a sufficient impact on the fat metabolism and could’ve eventually made Carter Rubin lose weight.

This kind of activity, often called NEAT (non-exercise-induced activity), is often overseen, but, according to the National Institute of Health, it plays a big role in overall calorie expenditure, and boosting it can help you lose weight quickly [1].

Nevertheless, even if Carter Rubin had some kind of regular fitness routine, it was probably something designed for his body and age.

Carter's Supplements

Top view of spilled supplements on floor

We're in the dark about Carter Rubin's use of supplements; even his biggest fans don't recall him mentioning them. Given his hectic life as a rising star, it's likely he relied on mineral and vitamin supplements.

These supplements are crucial for supporting the immune system, especially under stress and sleep deprivation, and are key in fat oxidation and weight loss.

For those a bit older with similar weight challenges, consider natural fat burners.

These products, packed with scientifically-supported herbs and nutrients, can rev up your metabolism, burning extra calories daily. When paired with an active lifestyle and healthy diet, they can accelerate weight loss noticeably.


What Long-Term Habits Did Carter Rubin Adopt?

He focused on maintaining a balanced lifestyle with regular exercise, mindful eating, and prioritizing self-care and rest.

Did Carter Rubin Undergo Surgery for Weight Loss?

No, Carter Rubin did not have surgery to lose weight. His transformation is believed to be a result of natural changes and healthy lifestyle choices, not surgical intervention.

What Is Neat and How Did It Play a Role in Carter Rubin’s Weight Loss?

NEAT stands for Non-Exercise Activity Thermogenesis. It includes activities like walking and climbing stairs. For Carter Rubin, increasing daily NEAT activities likely played a significant role in his weight loss by boosting his overall calorie expenditure.


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About The Author

Benedict Ang, CPT, PN1-NC
Staff Writer & Senior Coach
Benedict Ang, CPT, PN1-NC is an ex-National Soccer player turned MMA and Kickboxing champion, with ACE CPT and PN1-NC certifications. His advice is rooted in education and experience, ensuring that readers receive scientific and battle-tested insights. His mission is to empower his clients and readers to realize their potential and become the best versions of themselves.
Learn more about our editorial policy
James Cunningham, BSc, CPT
Staff Writer & Senior Coach
James Cunningham, BSc, CPT holds a BSc degree in Sport & Exercise Science from University of Hertfordshire. He's a Health & Performance Coach from London that brings a unique blend of academic knowledge of health supplements and practical exercise experience to the table for his readers.
Learn more about our editorial policy

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