Dmitry Nuyanzin ate 10,000 calories a day

Dmitry Nuyanzin ate 10,000 calories a day (Image: instagram.com/dmitryfit)

A 30-year-old influencer tragically died during a shocking challenge in which he aimed to gain 55lbs by eating 10,000 calories daily, before shedding the weight as part of an extreme fitness programme.

Dmitry Nuyanzin embarked on a plan to consume 10,000 calories each day — nearly four times the recommended 2,500 daily intake for men — in a bid to promote his weight-loss programme.

The fitness personality, who had built up a following of more than 43,000 Instagram followers, was determined to prove his programme’s effectiveness, pledging to pay $100 to anyone weighing over 220lbs who successfully shed 10 per cent of their body weight by New Year’s Eve, according to Perth Now.

Feasting on burgers, pizza, chips, pastries, and dumplings smothered in mayonnaise, Dmitry succeeded in piling on at least 28lbs in just one month, with his weight rocketing from 202lbs to 231lbs in that short period.

He dubbed it his junk food ‘marathon’. Launching the challenge towards the end of last year, Dmitry told his followers: “Friends! My WEIGHT LOSS COURSE is starting very soon, where you can win awesome prizes and, most importantly, build a beautiful body, learn how to eat well, and enjoy working out! I’ll be losing weight with my students, so it’ll be doubly exciting!”, reports the Daily Star.

The influencer wolfed over the recommended limit

The influencer wolfed over the recommended limit (Image: Instagram/dmitryfit)

Throughout the challenge, Dmitry kept his followers regularly updated on his progress, posting photographs of himself tucking into high-fat meals.

Detailing his dietary regime in one post, Dmitry, who resided in the Russian city of Orenburg, said: “I am currently gaining weight for my weight-loss course, and this is my 10,000-calorie diet.

“For breakfast, I have a plate of pastries and half a cake. For lunch, I usually eat 800 grams of dumplings with mayonnaise. During the day, I may snack on crisps, and for dinner, I have a burger and two small pizzas, either at a café or delivered.”

The Russian influencer had a mammoth following

The Russian influencer had a mammoth following (Image: instagram.com/dmitryfit)

In his final Instagram post, published in 2025, the influencer was photographed clutching a packet of crisps while patting his belly, with the caption: “I wanted it, and I got it!”

Tragically, according to reports from the Ostorozhno Novosti channel, Dmitry experienced cardiac arrest during his sleep and passed away.

This occurred merely one day after Dmitry called off his gym appointments, informing friends he was feeling poorly and planned to consult a doctor. He has reportedly been buried in Orenburg, with heartfelt tributes flooding in for “an amazing person”, described as “bright” and “positive”.

One social media user commented: “It is better to prove such theories not in practice. Rest in peace.”

Another remarked: “It’s true. If you’re not used to junky fries, fast food, it will indeed make you sick” A third individual observed: “Well, if ever there was a cautionary tale, then this has to be it.”

The 30-year-old tragically died of cardiac arrest

The 30-year-old tragically died of cardiac arrest (Image: instagram.com/dmitryfit)

The British Heart Foundation cautions that carrying surplus weight can present severe risks to your heart.

According to their website: “It can lead to fatty material building up in your arteries (atherosclerosis), increase your risk of high blood pressure, high cholesterol and type 2 diabetes. These are also risk factors for heart disease.

“If the arteries supplying blood to your heart become damaged and blocked, it could result in a heart attack. If this occurs in the arteries supplying blood to your brain, it could lead to a stroke or vascular dementia.”

Dmitry died a month into his challenge

Dmitry died a little over a month into his challenge (Image: Instagram/dmitryfit)

According to Mail Online, Dmitry was a graduate of both the Orenburg Olympic Reserve School and the National Fitness University in St. Petersburg. Throughout his career, he is reported to have trained members of the Russian elite while amassing a considerable online following.

Sources indicate that Dmitry was married but had no children. As yet, his official cause of death has not been disclosed.