Here's What Happened When a Doctor Tried the Whole30 Challenge (2024)

It was rough.

By Katie Dupere
Here's What Happened When a Doctor Tried the Whole30 Challenge (1)

You’ve probably heard of — or tried — the Whole30 diet. The elimination diet seriously restricts your food intake for 30 days with the goal of identifying food sensitivities and poor nutritional choices. Even with so much buzz around the diet, there is still one major thing health professionals and the general public can’t seem to agree on: Is this diet actually any good for you? Enter: Doctor Mike’s Whole30 experiment.

Doctor Mike, the internet celebrity doctor who gained popularity for his combination of smarts and good looks, recently took on the Whole30 challenge and documented the results on YouTube. His experience and professional thoughts might make you rethink the diet.

Doctor Mike is known for not endorsing elimination diets, of which Whole30 definitely is. He says in the video that they can fuel eating disorders and possibly lead to nutritional deficiencies by cutting out food that likely isn’t the cause of any problems.

Whole30 has some intense restrictive rules: no added sugar, no grains, no legumes, no dairy, no alcohol, no MSG or sulfites, and no junk food.

“I can cut out bread. That’s no problem I’ve done that before when I was gluten-sensitive in the past,” Doctor Mike says in the video. “But the fact that I had to give up brown rice, quinoa, things that I eat as part of a healthy diet…Why would you eliminate some foods like black beans that can be so healthy to the majority of people?”

The doctor is clearly not impressed — and that’s not the end of his problems with Whole30.

"Why would you eliminate some foods like black beans that can be so healthy to the majority of people?"

Doctor Mike happened to take on the challenge during Thanksgiving and the beginning of the Christmas holiday season, which made the rules even more difficult to follow. At Thanksgiving, Doctor Mike reports he could only eat turkey and peas. That’s it.

Aside from the elimination struggles, Doctor Mike also began to struggle in the gym. He says he noticed his bench starting to go down almost immediately.

“Normally when I’m working out, I’m benching 225 to 255 — 255 was becoming a huge challenge for me,” Doctor Mike says in the video. “When I stepped on to the basketball court, after one game, I felt like I was exhausted.”

Doctor Mike says this sluggish performance was probably due to underrating his usual caloric intake, which is something that just naturally happened on the diet.

“When you do an elimination diet like Whole30, it’s very easy to under eat calories,” Doctor Mike says. “This is probably why a lot of people lose weight.”

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Here's What Happened When a Doctor Tried the Whole30 Challenge (3)

Once he hit day 30, he started to reintroduce foods to note their potential negative impacts, which is the main point of the diet. But Doctor Mike says this is one of the things he dislikes most about Whole30, saying the time frame of adding back in foods is not enough to properly track their individual impact on the body.

“It’s not really scientific,” he says. “If you put in legumes on the first day, then two days later add in sugars, then two days after that grains, it’s not scientific. If we’re doing a proper elimination challenge in the medical setting, we do a 90-day elimination.”

Doctor Mike also reports his digestive system, took a hit during Whole30, leading to bloating and dirreahea. After reintroducing foods, he reports his body returned back to normal.

Overall, Doctor Mike wasn’t impressed with Whole30, though he did admit there was something reward to following such restrictive rules successfully. While the competitive crowd might agree, the doctor says Whole30 is probably not a good idea.

“At the end of the day, nutritional advice should be individualized," he says. "It’s a very restrictive diet, and it can cause some serious problems. There’s definitely some research showing that there’s some crossover with eating disorders. Most of the time, [Whole30] is unnecessary.”

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Here's What Happened When a Doctor Tried the Whole30 Challenge (2024)

FAQs

Here's What Happened When a Doctor Tried the Whole30 Challenge? ›

After reintroducing foods, he reports his body returned back to normal. Overall, Doctor Mike wasn't impressed with Whole30, though he did admit there was something reward to following such restrictive rules successfully. While the competitive crowd might agree, the doctor says Whole30 is probably not a good idea.

What is the dark side of Whole30? ›

The Whole30 diet is cutting dairy, alcohol, legumes, added sugars, and processed foods for 30 days. Potential risks include constipation and an inability to keep off weight lost while following it. The diet may also be expensive to follow, as it can involve buying a lot of meat and fresh produce.

What is the hardest day on Whole30? ›

On Days 10 and 11, you are statistically the most likely to quit your Whole30. (That's why they're “the hardest days.”) By this point, the newness of the program has worn off, and though you've made it through most of the unpleasant physical milestones, you've yet to experience significant benefits.

What are the long term consequences of the Whole30 diet? ›

Some downsides include Whole30 side effects like digestive problems, worsened food cravings, and reduced nutrient intake. The diet restricts certain foods and food groups, which, if followed long-term, can result in nutrient deficiencies.

Do you actually lose weight on Whole30? ›

Whole30 has gained a reputation as an effective program for weight loss and overall health improvement. Many individuals have reported successful weight loss outcomes while following the Whole30 guidelines. One key aspect of the Whole30 program is the elimination of processed foods and added sugars.

Do doctors recommend Whole30? ›

While the competitive crowd might agree, the doctor says Whole30 is probably not a good idea. “At the end of the day, nutritional advice should be individualized," he says. "It's a very restrictive diet, and it can cause some serious problems.

What is the one bite rule on Whole30? ›

I encourage you to read the whole post (and the experience that prompted it), but I'll summarize it here: If you get one bite into a less healthy treat and realize it's not worth it, stop eating.

Why do your pants get tighter on Whole30? ›

Sure enough, I was up 2.6lbs “overnight.” It's water retention and the beginning of the infamous “my pants are tighter” phase of Whole30 as the body continues expelling all the junk and getting used to a new way of eating. Day 8ish is usually a bit of a digestive adventure, so we'll see where things go.

Does Whole30 reset your metabolism? ›

“As well, you're not supposed to weigh yourself or take any measurements during the 30 days.” The idea behind this approach is to reset your metabolism and digestive tract. According to some research studies, elimination diets like Whole30 can be an effective tool to help some people with gastrointestinal issues.

Why do I feel so tired on Whole30? ›

In the first week or so on the Whole30 diet, your body is adjusting, physically and psychologically, which can lead to needing some major down-time. Around day six is when exhaustion and cravings typically hit their hardest, Hartwig says. That's because your body has been so reliant on using sugar, not fat, for energy.

Why shouldn't you do Whole30? ›

The Whole30 diet could make your blood sugar levels fluctuate. It can also cause inflammation in your gut, and hurt your health. If you have diabetes or irritable bowel syndrome, you might want to avoid the Whole30 diet.

Will I gain weight on Whole30? ›

Many people will lose weight on a diet like Whole30, but weight loss isn't the only goal. The diet can also help if you are at risk for diabetes, and help with conditions such as irritable bowel syndrome. But after a 30-day wonder diet like Whole30, it's likely weight will return if you don't follow a few rules.

What are the digestive issues after Whole30? ›

Yet you're still experiencing troublesome gastrointestinal symptoms late into your program, or even after your Whole30 is finished. You might be experiencing bloating, flatulence, abdominal pain, diarrhea, and/or constipation, and possibly even headaches, fatigue, and mood instability.

Is it normal to poop a lot on Whole30? ›

Whole30. If you're used to eating a traditional low-fiber American diet—meaning not many fruits, veggies, and whole grains and lots of sugar and processed carbs—switching to this veggie-heavy diet may trigger diarrhea, Upton said.

What are the withdrawal symptoms of Whole30? ›

Normal. Sorry.
  • Headaches (dull)
  • Lethargy.
  • Sleepiness.
  • Crankiness.
  • Brain fog.
  • Cravings.
  • General malaise.
  • Breakouts.

How long does it take to see results on Whole30? ›

While radical health improvements can take place in just 30 days, when you put it into context, decades of less than healthy behavior often can't compete with 30 days of Whole30. Fat adaption (teaching your body to use fat as fuel) takes time.

What does Whole30 do to your body? ›

Some of the other benefits of Whole30 are that it may also help you: Control blood sugar levels, which may allow you to have more energy by preventing sugar spikes and crashes. Restore your metabolism. Boost your immune system.

What happens after 30 days on Whole30? ›

According to the official Whole30® website, once those 30 days are up, it's up to you to “carefully and systematically reintroduce those foods you've been missing”.

What are the don'ts on the Whole30 diet? ›

To accurately identify any specific food sensitivities, you must commit to the complete elimination of these groups for 30 straight days.
  • Added sugar (real or artificial) ...
  • Alcohol (wine, beer, cider, liquor, etc.) ...
  • Grains (wheat, oats, rice, corn, quinoa, etc.) ...
  • Legumes (beans, lentils, soy, and peanuts)

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