15 Bizarre Diet Fads From The ’70s And ’80s That Made No Sense

Get ready for a wild ride through the world of retro weight-loss fads—where logic took a backseat, and quick fixes reigned supreme!
The ’70s and ’80s were a time of bold fashion, disco fever, and, apparently, some truly questionable diet trends. From all-meat meal plans to shockingly low-calorie regimens, these weight-loss crazes promised results but often left followers feeling famished, dizzy, or just plain bewildered.
Picture it: the era of jazzercise and neon leg warmers, where people guzzled cabbage soup for days, swore by grapefruit as a magical fat burner, and even tried diet pills that were basically legalized speed. Some fads seemed oddly futuristic (hello, liquid meal replacements), while others were downright bizarre—like chewing food but never swallowing (yes, that was a thing).
Join us as we dive into 15 of the most peculiar, sometimes dangerous, but always fascinating diet fads of the ‘70s and ‘80s. You’ll laugh, you’ll cringe, and you’ll be very grateful for modern nutrition science!
1. The Steak & Eggs Diet

Once upon a time, the Steak & Eggs Diet tried to answer the question: Who needs fiber when you have protein overload? This 1970s marvel encouraged dieters to consume steak and eggs for every meal. Yes, breakfast, lunch, and dinner came with a side of cholesterol.
While this might sound like a carnivore’s dream, it left little room for fruits, vegetables, and, well, regularity. Imagine going days without a single grape or green leaf.
Though it promised muscle gains and fat loss, it mostly delivered a constipated frown. The lack of carbohydrates and essential nutrients made it unsustainable, yet it found followers desperate for a quick fix. In today’s health-conscious world, this meaty plan seems more like a punchline than a punch of protein.
2. The SlimFast Diet

In the 1980s, the SlimFast Diet turned mealtime into a sugary experiment. “A shake for breakfast, a shake for lunch, and then a sensible dinner,” it proclaimed with gusto. But what was really in those shakes?
Critics might call it sugar water with a protein twist, leaving dieters with hunger pangs and sugar crashes. The idea was simple but flawed: replace two meals with a liquid concoction, but the results weren’t as sweet as the shakes.
Weight loss, yes, but at the expense of satisfaction and nutrition. While the shakes temporarily filled stomachs, they couldn’t fill the nutrient void. In a world of whole food diets, this liquid leap seems more like a nostalgic laugh than a lasting solution.
3. The Cabbage Soup Diet

The 1980s welcomed a diet that would have you saying, “Does anyone have a match?” Enter the Cabbage Soup Diet, where the promise was fast weight loss, and the cost was your olfactory dignity.
For seven days, dieters indulged in endless bowls of cabbage soup, with the occasional nod to a veggie or slice of lean meat. While it might sound like a detox dream, it quickly turned into a bathroom nightmare.
Though pounds were shed, it was mainly the water weight doing the disappearing act. A short-lived fad, it left participants gassy, hungry, and wondering if cabbage was ever meant to be consumed in such quantities. This spicy tale of diet gone wrong is as unforgettable as the scent it leaves behind.
4. The Drinking Man’s Diet

In the late ’60s and early ’70s, the Drinking Man’s Diet dared to pair booze with weight loss. Imagine a world where you could enjoy cocktails with your steak and still claim health benefits. The idea was both exhilarating and eyebrow-raising.
Eat meat and fats while skipping carbs, and wash it all down with your favorite alcoholic beverage. It sounded like a party, but the reality was less festive.
Cutting out essential nutrients while encouraging heavy drinking led to a diet as unstable as the dieter’s liver. The appeal of pairing wine with weight loss soon fizzled, leaving behind only the hangover of a fad. In hindsight, it was a recipe for nutritional chaos rather than culinary genius.
5. The Grapefruit Diet

The 1970s saw grapefruits hailed as the fat-burning fruit. The Grapefruit Diet, also known as the Hollywood Diet, was all about starting meals with this citrus star.
The premise was simple: eat half a grapefruit before each meal, with the belief that it would magically melt away fat.
The reality? It mostly melted taste buds and willpower. The diet’s bitter truth was that it merely reduced overall food intake, not waistlines. While the grapefruit itself is nutritious, relying on it as a miracle weight-loss tool was more sour than sweet. Today, it stands as a juicy reminder that there’s no shortcut to shedding pounds.
6. The Cigarette Diet

Before health warnings caught on, the Cigarette Diet blew smoke rings around appetite control. Popular from the ’50s to the ’70s, it played on nicotine’s suppressing effects.
Some cigarette brands even marketed themselves as the chic choice for weight watchers. Puff away those pesky cravings, they suggested.
But behind the smoke was a fire of health hazards. What started as a slimming secret quickly turned into a cancerous concern. The diet was less a path to thinness and more a warning sign of times gone awry. Though it marketed itself with glamour, the truth was as harsh as the cough it left behind.
7. The Hollywood Diet

The Hollywood Diet promised a silver screen-worthy transformation in just 48 hours. The secret? A special juice blend that was more myth than meal replacement.
For two days, dieters sipped on this concoction, hoping to drop 10 pounds faster than a movie’s opening weekend.
The catch? The weight loss was merely dehydration, not a miraculous slimming. While the juice cleanse might fit the fast-paced lifestyle of Hollywood stars, it left the rest of us starstruck and dizzy. In the end, it was a box office flop in the diet world, offering nothing more than an empty glass.
8. The Egg Diet

Ever imagine a diet where eggs rule the roost? In the 1970s, the Egg Diet had followers cracking open dozens. With a side of grapefruit, of course.
The idea was to consume eggs for every meal, appealing to those seeking protein and simplicity.
Yet, as the eggs piled up, so did cholesterol concerns. Devouring up to 12 eggs a day had dieters asking: is this yolk worth the yoke? While it promised weight loss, it mostly scrambled nutritional balance. Today, this diet is better left as a breakfast joke rather than a dietary guide.
9. The Apple Cider Vinegar Diet

The 1980s brought us many things, and the Apple Cider Vinegar Diet was one of them. The claim: drink vinegar before meals to melt away fat.
In reality, it melted taste buds and left throats burning. The acidic assault was supposed to curb appetite, but mostly curbed enjoyment.
Despite its popularity, it had no scientific backing. Drinking vinegar became a sour note in diet history. While apple cider vinegar has some health benefits, this fad was more about wishful thinking than waistline shrinking. It stands as a cautionary tale of sour solutions to sweet cravings.
10. The Sleeping Beauty Diet

The Sleeping Beauty Diet took beauty sleep to dangerous heights in the 1970s. The idea? Sleep through meals by taking sedatives.
What might sound like a fairy tale was, in fact, a perilous plan. Inducing sleep to avoid eating put participants at risk.
Not only was it a health hazard, but it also ignored the body’s need for nutrients. While resting may rejuvenate, this diet was more about avoiding reality than facing facts. It’s a sleepy reminder that some shortcuts are best left in dreams.
11. The Banana & Milk Diet

The 1970s brought us the Banana & Milk Diet, a pairing as odd as it sounds. The plan was to eat only bananas and drink milk for days on end.
While bananas and milk are nutritious, relying solely on them led to nutrient gaps and digestive dilemmas.
For those on this diet, the monotony was enough to drive anyone bananas! It illustrated that even healthy foods could falter in extreme diets. In today’s diverse diets, this combo is more a curiosity than a culinary creation.
12. The Negative-Calorie Diet

The 1980s Negative-Calorie Diet was a numbers game that promised more than it delivered. The idea was to consume foods that supposedly required more calories to digest than they provided.
Think celery and lettuce, claiming to be the diet darlings. However, the science behind it was as thin as the food itself.
While low in calories, these foods lacked essential nutrients, leading to hunger and headaches. The concept was more calorie confusion than culinary cleverness, reminding us that sometimes, less isn’t more.
13. The Fasting Diet

The 1970s Fasting Diet was about as fun as it sounds: not eating for days or weeks, relying on liquids.
While fasting has roots in various traditions, this extreme version left followers weak and nutrient-deficient.
Sure, weight was lost, but so was muscle, brain clarity, and patience. It was a risky road to walk, more a lesson in what not to do than a diet to follow. In a world of mindful eating, it stands as a stark contrast to healthy habits.
14. The Spoon Diet

The 1980s Spoon Diet posed an unusual challenge: eat only what fits on a spoon.
While it aimed to control portions, it left much to be desired. The loophole was apparent: just use a bigger spoon!
This spoonful strategy was more gimmick than guidance, leaving dieters scooping up confusion. It serves as a reminder that simplicity sometimes isn’t the solution.
15. The Tapeworm Diet

The Tapeworm Diet took weight loss to a creepy extreme in the 1970s. The notion? Swallow a tapeworm egg and let it feast on your food.
While it promised simplified slimming, it was a horrifying health hazard. A parasite inside the body was less a diet and more a desperate measure.
This unsettling idea was a cautionary tale of how far some would go to lose weight. In today’s informed era, it’s a relic of desperation, reminding us of the importance of safe and sane dieting.