Expert reveals: The 5 Best Diet Plans To Lose Weight Fast

Last updated: 
oktober 10, 2026
14 Comments
By 
Grace Ong
 - Nutritionist

Are you tired of diets that promise quick results but leave you feeling frustrated and stuck in the same place? Sick of wasting time on weight loss programs that never seem to work?

I’ve been there, and I know how overwhelming it can be to sort through all the options. That’s why I’ve taken the guesswork out of it for you. After testing every weight loss program, diet plan, and method out there, I’ve found the ones that truly deliver results.

No gimmicks, no empty promises—just real solutions that help you shed the weight and keep it off for good.

If you're ready to stop struggling and start seeing real results, it’s time to take action. Let me show you the top plans that actually work.

Top 5 Diet Plans Guaranteed to work

Nr.NaamScore
1FitFast10/10
2Keto Diet8/10
3Carnivoor Diet7/10
4Paleo Diet6/10
5Mediterranean Diet6/10

1. FitFast

This is the best diet plan I’ve tested. With FitFast, you can lose weight quickly in a healthy and sustainable way.

Most participants in this program lose an average of around 2 kg per week.

Personally, I lost 9 kg in 5 weeks with this method; it was easy to stick to, offered plenty of variety, and fit well into my busy life.

When you follow the FitFast plan, you gain access to a personal coach that’s available around the clock.

Additionally, FitFast offers over 1,000 delicious weight-loss recipes that you can personalize to your needs.

Take this short Quiz (2 min) to see how much weight you can lose with FitFast

One minor downside of FitFast is that it's only available on mobile and tablet, which might be a drawback for some users. However, most people actually see this as a big advantage, as it gives them instant access to the app on their smartphone, wherever they are.

  • Score: 10/10
  • An average weight loss of 2 kg per week
  • Best weight loss method available
  • Suitable for both men and women
  • Scientifically proven methods
  • Over 1,000 weight-loss recipes
  • Instant access; you can start right away

Click here to learn more about FitFast >>


2. Keto Diet

The keto diet is a popular diet plan that focuses on low carbohydrates and high healthy fats. This puts your body into ketosis, where it burns fat for energy. It can be effective for rapid weight loss and improving health issues such as type 2 diabetes.

The Keto Diet is one of the most effective ways to lose weight. However, it is difficult for many people to give up the oh-so-delicious carbohydrates.

If you are interested in a diet based on the keto diet, consider buying a good book where you can learn everything about keto and all the recipes.

  • Score: 8/10
  • Wonderful weight loss plan for meat lovers
  • Not vegan friendly 😉

Click here to view the best Keto Diet plans >>


3. Carnivore Diet

carnivoor

The carnivore diet is a diet plan where you exclusively consume animal products such as meat, fish, eggs, and dairy. Vegetables, fruits, and carbohydrates are avoided.

Proponents of the carnivore diet claim that it can offer rapid weight loss and health benefits, such as improved digestion and increased energy.

To ensure you receive all necessary nutrients, it is advisable to use dietary supplements. It's important to assess whether this diet fits your individual needs and to maintain a balanced diet.

  • Score: 7/10
  • Geweldig voor vlees liefhebbers
  • Niet vegan vriendelijk

Bekijk hier het carnivoor dieet >>


4. Paleo dieet

paleo

The Paleo Diet is a nutritional plan based on the foods our ancestors ate during the Paleolithic era. This means focusing on natural, unprocessed foods such as meat, fish, nuts, seeds, vegetables, and fruits. Grains, dairy, sugars, and all processed foods are excluded.

Proponents of the Paleo Diet believe that returning to the eating habits of our hunter-gatherer ancestors leads to numerous health benefits, including weight loss, reduced inflammation, and improved energy levels.

Although the Paleo Diet provides a rich source of natural vitamins and minerals, limiting certain food groups may mean that additional supplements are needed to get all the necessary nutrients.voedingsstoffen binnen te krijgen.

  • Score: 6/10
  • No more ultra-processed foods
  • This diet is not too restrictive

Click here to view the best Paleo Diet plans >>


5. Mediterranean Diet

The Mediterranean diet is inspired by the eating habits of countries around the Mediterranean Sea. This diet plan emphasizes consuming vegetables, fruits, whole grains, legumes, healthy fats such as olive oil, and moderate amounts of fish, poultry, and dairy.

Red meat is consumed in limited amounts. The Mediterranean diet is known for its health benefits, such as lowering the risk of cardiovascular disease, improving brain function, and promoting a healthy weight.

It is a tasty and varied diet that is easy to follow and contributes to a long-lasting healthy lifestyle.

  • Score: 6/10
  • Varied food choices
  • Weight loss is not rapid

Click here to view the best Mediterranean Diet plans >>


Conclusion

With so many diet plans available, it can be challenging to choose the right one for your body and needs.

If you're looking for the best diet plan, I highly recommend FitFast. Among all the plans I've reviewed, FitFast has proven to be the most effective and sustainable.

Click here to check out FitFast >>

Disclaimer: Weight loss is achieved as part of a healthy, calorie-reduced diet. Results may vary between individuals and cannot be guaranteed. The information in this article is for informational purposes only and is not a substitute for advice from your doctor or other healthcare provider. You should consult a physician or healthcare professional before starting any diet or exercise program.

14 Comments

  1. Hi Grace! Thanks for your recommendations. I tried so many things before but nothing really worked. I started using FitFast two months ago, and wah, I’ve slimmed down a lot already!

    1. I’ve been using the FitFast app for 4 weeks now, and I must say, it’s been a really good weight loss tool. The personal coach replies super fast and has been very helpful. I’m still enjoying my makan, but at the same time, I see my belly fat going away!

  2. I’m always very busy with work, no time to cook or go groceries, so I started using FitFast, and wah, very satisfied. One more month, and I’ll hit my goal weight!

  3. I’ve always tried to follow the "My Healthy Plate" guidelines and eat balanced meals, but it just doesn’t work for me anymore, maybe because of menopause. I’m gonna try FitFast lah.

      1. So far, I like it. But I’ve only been at it for 3 weeks lah. Already down 10 lbs (I’m from the US, so we use lbs), hope it continues this way!

  4. I’m currently following FitFast on my dietitian’s recommendation. She said the best way to lose weight is intermittent fasting and recommended the FitFast app to me. She was right, I lost a lot of weight using FitFast!

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