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The GM Diet: Seven-Day Plan, Review, and Tips

The General Motors (GM) seven-day diet consists of different foods each day.

The General Motors (GM) seven-day diet consists of different foods each day.

The General Motors Detox Diet

I hate dieting. I mean seriously, it's the worst. I like food—and not just food, but yummy, sugary, greasy, bad-for-you food. But when I realized it had been almost two years since my youngest son blessed me with bigger hips and the difficulty to look down and see my toes past my post-prego muffin top, I began searching for a way to get those pounds off.

Eventually, I came across a diet plan that promoted its ability to make you lose 10 to 17 pounds in a seven-day period. Despite the fact the diet seemed difficult, let's be serious, 17 pounds in seven days is enough motivation for any of us to endure whatever this plan asks. So I decided to not only embark on the GM diet journey, but to write about my experience as well!

Does It Work? The Short Answer

Unlike Roger Cohen from the New York Times and other resources that promise you will lose 10-17 pounds in one week, I lost five pounds. However, I am not upset by that because I learned a lot about just how bad my eating habits were prior to this diet, and I learned a lot about self-control. For a more detailed answer, including tips for how to make the whole experience more appetizing, see "My Day-by-Day Breakdown and Personal Review" below.

A Quick Overview of the GM Diet

The GM diet is rumored to have been developed by General Motors as an employee health plan. One overview of the diet reads:

The following diet and health program was developed for employees and dependents of General Motors, Inc., and is intended for their exclusive use. The program was developed in conjunction with a grant from the U.S. Department of Agriculture and the Food and Drug Administration. It was field tested at the Johns Hopkins Research Center and was approved for distribution by the Board of Directors, General Motors Corp., at a general meeting on August 15, 1985.

However, it is difficult to imagine a company telling its employees what to eat each day of the week, and with some digging, the New York Times has discovered that this backstory for the diet is an urban legend.

Nonetheless, the paper's columnist Roger Cohen decided, "It’s a good diet, G.M. or no," and reported that he lost 11 pounds during his week following the plan.

The diet dictates a different food each day (with a few strange aberrations, such as a baked potato with butter to start out your vegetable day), with each day's food group accompanied by 10 glasses of water. Look at the chart below for a quick overview of what to eat each day.

GM Seven-Day Plan Diet Chart

Day-by-day breakdown of the GM one-week plan.

DayFoods

Day 1

Fruits only. No bananas.

Day 2

Vegetables only, but you can start the day with a baked potato with one pat of butter.

Day 3

Fruits and vegetables. No potato or bananas.

Day 4

Eight bananas, three glasses of milk, and GM Soup (recipe below).

Day 5

Tomatoes and up to 20 oz of lean beef.

Day 6

Beef and vegetables.

Day 7

Brown rice, vegetables, and fruit juice.

The GM diet soup recipe.

The GM diet soup recipe.

GM Soup Recipe

Ingredients:

  • 28 oz of water
  • 4 packets of Lipton's French Onion Soup Mix
  • 6 onions
  • mushrooms, green peppers, and tomatoes (each can be added to your heart's content)
  • 1 Tbsp olive oil

Directions:

  1. Dice the onions, mushrooms, green pepper, and tomatoes.
  2. Sauté the onions, mushrooms, and green pepper in the olive oil until slightly browned.
  3. Add the tomatoes, and sauté for one minute.
  4. Transfer the vegetables to a pot and add the water and soup mix.
  5. Bring soup to a boil, then serve.

Does It Work? The Long Answer

Here's my more detailed overview of the diet.

My Day-by-Day Breakdown of the Diet and Personal Review

Though every day of the plan consists of different foods, there are certain things that remain constant throughout the plan. You must drink 10 glasses of water every day for all seven days. Also, be sure to strictly follow the diet, with no added beverages, alcohol, or dressings. You may use seasoning.

On day one of the GM diet, eat water-based fruit (no bananas).

On day one of the GM diet, eat water-based fruit (no bananas).

Day 1: Fruit Only (No Bananas)

On this day, eat only fruit. There are no bananas yet—eat as much water-based fruit as possible. If you can manage to eat cantaloupe and watermelon only on this day, you can lose up to three pounds by the end of the day.

I loved this day. I mean, I ate fruit out of cans and filled big bowls full of ridiculous portions of pineapple, mandarin oranges, and cantaloupe. However, at the end of the day, I was starving—probably from the lack of my usual carb and dairy binges.

Day two of the GM diet is vegetables only, with the exception of a baked potato with butter for breakfast.

Day two of the GM diet is vegetables only, with the exception of a baked potato with butter for breakfast.

Day 2: Baked Potato with Butter and Vegetables

On your second day, you have a bit of a treat—you may start the day with a large baked potato with one pat of butter. After that, it's vegetables only. You can prepare them raw or cooked and are encouraged to eat until you are full.

Waking up to that baked potato was probably the highlight of the whole diet. Finally! Some substance! (Said my body.)

I ate a lot of green beans, munched on a few "rabbit-style" carrots, and made a rather large spinach salad with mushrooms and carrots. That last part was especially difficult for me without any sort of dressing. This day I also went to bed quite hungry.

Day three of the General Motors diet consists of fruits and vegetables—minus the bananas or potatoes.

Day three of the General Motors diet consists of fruits and vegetables—minus the bananas or potatoes.

Day 3: Fruits and Vegetables (No Bananas or Potatoes)

On this day, you can eat both fruits and vegetables. Though you still can't eat bananas, and this time, there is no baked potato.

I tried to eat as much as possible as often as possible to keep my energy up for the rest of the week. By the end of this day, I was very energized, and my body felt great. I cheated a little, using a spinach tortilla for a vegetarian wrap.

For day four of the GM diet, eat bananas and drink milk and the surprisingly delicious GM Soup.

For day four of the GM diet, eat bananas and drink milk and the surprisingly delicious GM Soup.

Day 4: Bananas, Milk, and GM Soup

Today is your hump day! You can have three glasses of milk, up to eight bananas, and an unlimited quantity of GM Soup. (The recipe is listed earlier in this article.) Combine some of the milk and bananas to change things up with a smoothie!

Milk-and-banana day was my favorite of all of them. I love milk. I love bananas. I felt satisfied all day—no more hunger pains! And that soup? It was delicious. Today was a piece of cake—only without the cake.

Day five of the GM diet is beef and tomato day.

Day five of the GM diet is beef and tomato day.

Day 5: Beef and Tomatoes

FEAST DAY! Day five consists of beef and tomatoes. You may eat up to 20 oz of lean beef today. To jog your imagination, that could include steak, roast, ground beef, etc. In addition to the beef, you can have five whole tomatoes. Drink an additional two glasses of water today.

I struggled through this day. I couldn't think of anything creative to do with the beef that was allowed under the plan. In retrospect, I would recommend buying steak or a roast for this day, and sautéing a few of the tomatoes to go with it.

I made the mistake of settling for plain ground beef—don't do it! It's gross plain. I also cut up my five tomatoes because I intended to snack on them throughout the day. However, I ate one on my hamburger meat and barely got through another. Just one 10-oz serving of the ground beef around noon kept me satisfied until bedtime.

On day 6 of the General Motors diet, you can eat beef and vegetables.

On day 6 of the General Motors diet, you can eat beef and vegetables.

Day 6: Beef and Vegetables

On this day, you may eat an unlimited amount of beef and vegetables.

This day was a lot more fun for me because I got to cook a bunch of veggies, throw them in a bowl with the rest of my hamburger, and feast! I munched on some raw veggies throughout the day as well.

Day seven of the GM diet mainly consists of brown rice and vegetables, though drinking fruit juice is also encouraged.