Skip to main content

The Whole30 diet: Everything you need to know

Learn about what foods you can and can't consume on the Whole30 diet

Assorted vegetables sold at a market.
B-1 foto / Pixabay

There are so many different diets out there, so is the Whole30 diet worth trying? While you don’t want to follow a “quick fix” diet since they tend to cause more harm than good, as they are unsustainable, and many people gain the weight they lost right back, there are still ways of eating that promote health and wellness. The key is finding something that you would be willing to stick to long-term – that means it doesn’t have any crazy or unrealistic restrictions!

With that said, there are certain circumstances under which following the Whole30 diet for a deliberately short time can be beneficial. For example, if you’re experiencing digestive issues routinely after eating with no known cause, trying an elimination diet and recording your symptoms and reactions as you reintroduce foods can elucidate your potential food sensitivities.

After the potential culprits are identified, you can resume a more liberal, diverse diet by excluding the trigger foods. Similarly, some guys may find a short-term, squeaky-clean diet can help them reset their brain and appetite to be keener with healthier eating habits after an extended vacation marked by indulgent eating or weeks of enjoying rich foods.

The Whole30 diet is designed for exactly these types of scenarios. Though highly restrictive and therefore not an easy diet to implement and stick with, the results can be rather transformative for those who can diligently adhere to the diet program for its entire 30-day duration. Fortunately, 30 days come and go fairly quickly. If you are experiencing symptoms of food sensitivities, the Whole30 diet just might be the dietary reset you need to start feeling better and making progress toward your health goals.

However, it can also be a controversial eating plan, and there are plenty of registered dietitians and nutritionists who take issue with some of the “rules” and exclusions set forth by the diet, so it warrants careful consideration of both sides before you jump in.

Are you curious to see if you’re up for the challenge and in need of rebooting your dietary habits and digestive health, or if you fall more in the camp that the Whole30 diet is a fad diet with little merit? Keep reading to learn all the need-to-know information about the Whole30 diet.

An overhead shot of fruits, vegetables, unprocessed meat, nuts, and seeds with "Whole 30 diet" written on a small blackboard.
Yulia Furman / Shutterstock

What is the Whole30 diet?

Created in 2009 by a married couple of sports nutritionists, Melissa Urban and Dallas Hartwig, the Whole30 diet is a 30-day dietary reset eating program designed to help people identify food sensitivities and triggers of inflammation, cravings, low energy, hormonal imbalances, and digestive dysfunction. Adherents of the Whole30 diet are asked to fully buy in for the entire 30 days, abiding by all the explicitly stated rules without slip-ups. Should a rule be broken, the dieter must restart their count from day one.

The Whole30 diet focuses on consuming whole, unprocessed foods, which is certainly a sound eating principle. However, because the list of rules is extensive, the actual diet is highly restrictive. The primary purpose of the diet is to remove trigger foods, and this includes many major food groups like dairy and grains. After the 30 days, the foods you miss eating can slowly be re-introduced one at a time while you’re expected to note any adverse reactions. If the food does trigger cravings, inflammation, bloating, low energy, sleep disturbances, etc., then you’re supposed to permanently eliminate it from your diet.

Unlike most other popular diets, the Whole30 diet actually prohibits weighing yourself except for the first and thirtieth days of the program. Dieters are also asked not to track calories but to instead focus on eating to satiety.

An overhead shot of salmon on cutting board, avocado, extra virgin olive oil, nuts, and bowl of seeds on a table
Getty Images

What foods can you eat on the Whole30 diet?

The Whole30 diet allows certain whole, natural, and unprocessed foods. While the diet does have a very specific list of exclusions, there are no stipulations about how many servings you are allotted or how often you can consume them among the foods you’re permitted to eat. The individual person can make their own meal choices as long as they are eating only Whole30-approved foods. The following foods are allowed on the Whole30 diet:

  • Meat: All real meats are permitted, but processed and cured meats are not
  • Poultry: All poultry is allowed as long as it does not contain additives
  • Nuts and seeds: All except peanuts and peanut products, as peanuts are legumes
  • Fruit: Fresh and canned fruit is allowed, but fruit products with added sugars are not
  • Healthy fats: Examples include avocados, olive oil, and ghee
  • Seafood
  • Fish
  • Eggs
  • Vegetables
  • Spices
  • Herbs
Milk, yogurt, butter, cheeses, and eggs shot on rustic wooden table.
Image used with permission by copyright holder

What foods do you have to avoid on the Whole30 diet?

The list of foods you need to avoid on the Whole30 diet is rather extensive. Here are the highlights.

  • All grains, even whole grains
  • All dairy, including cheese, yogurt, milk, ice cream, sour cream, and butter, among others
  • All soy, including soy lecithin, tofu, soy milk, and soybean oil
  • All legumes, which include peanut butter, nuts, beans, peas, lentils, chickpeas, hummus, and peanut oil
  • All sugar, even natural sugars like honey, maple syrup, and agave
  • All artificial sweeteners like Splenda, xylitol, or stevia, even in gum
  • All alcohol, even if cooked off
  • All processed food additives, such as carrageenan, sulfites, and MSG
  • All sweet treats, even if you bake them up, so prepare alternative versions made only with ingredients approved on the Whole30 diet
Man sleeping soundly in his bed
Getty Images

What are the benefits of the Whole30 diet?

There are no scientific studies to date examining the benefits of the Whole30 diet, so all the cited benefits are merely anecdotal. Having said that; the Whole30 diet creators say that people who successfully complete the diet program experience impressive and significant changes in their health, including weight loss, fat loss, better sleep, clearer skin, more energy, lower blood pressure, less food cravings, and less bloating and gas.

Because the Whole30 diet does have quite specific rules, it also forces people to be more mindful and cognizant of the foods they put in their bodies, which can be helpful moving forward beyond the 30 days. Lastly, many people enjoy the freedom from the scale and being able to focus on how they feel rather than how much they weigh.

An overhead shot of a bowl of grilled chicken salad on a table.
Cavan-Images / Shutterstock

Why is the Whole30 diet controversial?

Many nutritionists and registered dieticians have issues with aspects of the Whole30 diet or even the diet in its entirety. The primary complaint is that, to date, there have been no research studies conducted on the diet, so there is no evidence demonstrating its efficacy, health benefits, and safety, meaning it’s all based on anecdotal evidence and conjecture. Additionally, the Whole30 diet removes certain foods and food groups that many experts consider to be nutritious, including whole grains and legumes.

Lastly, from a behavioral perspective, some people take issue with the cult-like, militant vibe induced by the rules, the need to restart if you’re not perfect, and the extreme strictness of the diet. All of this can make it too difficult and impractical for many people who would otherwise be served by following a less severe version but end up abandoning ship due to the expectations.

Kiwi and citrus fruits
Shutterbug75 / Pixabay

Can you do the Whole30 diet beyond 30 days?

While it’s technically possible to follow the core principles of the Whole30 diet for longer than 30 days, it’s important to understand the potential drawbacks and approach it cautiously. The Whole30 is intended as a 30-day reset, not a long-term dietary solution. Its restrictive nature can be challenging to maintain indefinitely, potentially leading to frustration and unsustainable habits.

Eliminating entire food groups (legumes, dairy) for an extended period can make it difficult to meet all your daily nutrient needs, especially calcium, protein, and certain vitamins. However, an alternative approach is the Whole30 Plus program, which extends the elimination phase beyond 30 days in 15-day increments (up to 90 days).

Remember, the most sustainable approach to healthy eating involves creating a balanced and flexible plan that you can maintain long term, while addressing your individual needs and preferences. Consider consulting a registered dietitian or healthcare professional for personalized guidance.

Sliced apples and almond butter served on red plate.
Image used with permission by copyright holder

Sample Whole30 diet meal plan

Curious about what a day of eating might look like on the Whole30 diet? Below, we share a sample meal plan.

  • Breakfast recipe: Two scrambled eggs with green and red bell peppers, onions, and mushrooms, and a side of hash browns cooked in olive oil
  • Snack: Apple slices with almond butter
  • Lunch recipe: Lettuce wrap with chicken salad made with chicken breast, homemade mayo, celery, and carrots
  • Snack: Mixed nuts (no peanuts) and an orange
  • Dinner recipe: Pork chop with a baked potato, salad, and Brussels sprouts
  • Snack: Honeydew melon

Editors' Recommendations

Amber Sayer
Former Digital Trends Contributor
Amber Sayer is a fitness, nutrition, and wellness writer and editor, and was previously a Fitness Editor at Byrdie. She…
The 12 healthiest fruits you can eat right now
Add these fruits to you diet and feel the goodness in your body
Sliced papaya, mango, and nectarines on the table

Gorging on hotdogs and ice cream is fun. But we should not forget to spruce up our diet with healthier options, like fresh fruits. No one fruit will provide all the nutrition that a person needs in a day. In fact, vegetables are typically more nutrient-rich options and lower in sugar than fruit. However, some nutrients, like vitamin C, are found in higher levels in the latter than the former.

Using the USDA’s FoodData Central as our main source, we researched the nutrient makeup of many popular fruits across the globe to bring you our roundup of the healthiest fruits for this season and beyond. Once you purchase these fruits, you can use them as ingredients for concocting creamy milkshakes or your morning smoothies.
Guava

Read more
It’s International Whiskey Day, and you need to try these whiskeys from around the world
There are many lesser-known international whiskeys worth trying
A trio of whiskies

While we love whisk(e)y every day (only the US and Ireland use the ‘e’ in whiskey), we truly celebrate it every March 27th. This is because that date is International Whisk(e)y Day. Celebrated since 2008, the holiday was created not only as a way to showcase how much of a global spirit whisk(e)y is but also to support Parkinson’s disease research publicly and to honor the late English beer and spirits writer Michael Jackson (a different Michael Jackson) who suffered from the disease. So, not only can you enjoy some tasty drams, but you’re doing it to highlight a great cause.
Whisk(e)ys of the world

Originally, the holiday was created to pay homage to American, Irish, Scottish, Japanese, and Canadian whisk(e)ys only. But it’s become a day to enjoy the spirit on a world scale. This is because, on top of the usual well-known whiskey-producing countries, there are a handful of lesser-known countries crafting award-winning, nuanced, complex, highly memorable whisk(e)ys that deserve your attention.
5 great international whisk(e)ys

Read more
The best fish to eat: 11 of the healthiest options for your plate
Even if you're picky about fish, you'll find several choices to enjoy on this list
Sablefish in a dish

There's a reason why fresh fish is often called brain food. It's healthy stuff, just like fresh fruits, providing nutrients while aiding the body in a number of other important ways. Fortunately, you can enjoy fish in virtually countless ways. You can go Hawaiian and eat it raw in the form of poke or grill it up on your deck. You can clean a fish and even age a fish. Many types of fish are also great in pasta, sandwiches, or even tinned up as conservas. There are pretty much as many ways to prepare fish as there are delicious species swimming through the many vast oceans of the world.

There are things to look for when you're combing through the fish selection of your favorite market, though. Look for terminology like "wild caught" on labels, ensuring that the fishery is being treated with the care and sustainability it deserves, wherever that may be. A great resource is this handy app from the Monterrey Bay Aquarium in California.

Read more