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How to Lose 100 Pounds in 6 Months: Is This a Realistic Goal?

The internet is often full of fantastic weight loss stories and testimonials. From famous celebrities to everyday people, you’re guaranteed to come across someone who claims to have lost an incredible amount of weight in a very short period of time.

The topic of how to lose 100 pounds in 6 months is one such success story that has many people wondering if they can do it too. There’s no denying that a 100 lb weight loss is a great feat, but completing it in just half a year is even more impressive.

So how do you go about it? Can anyone manage to achieve a 100-pound weight loss in this time frame? Read on to learn what science says about this and more.

How to Lose 100 Pounds in 6 Months

When it comes to how to lose 100 pounds in 6 months, the two main ways you can try to do this are by optimizing your diet and adding exercise to your weekly routine. In terms of diet, you should be eating at a caloric deficit and regarding working out, you should try to exercise at least 2 to 3 times a week.

With that being said, it’s important to understand that diet and exercise alone aren’t the only things that determine how much weight you will lose in a specified time period. Factors such as your starting weight, age, sex, the amount of sleep you get each night, stress, medications you’re taking, underlying health issues, and your genes, also play an overarching role (1, 2, 3).

Can You Lose 100 Pounds in Six Months?

Yes and no. The answer is a little complicated.

While it cannot be denied that some people have managed to lose 100 pounds in 6 months, these people tend to be the outliers. For the majority of the population, there’s no possible way for you to lose 100 pounds in just 6 months.

If you were to undergo some kind of weight loss surgery, then yes, a weight loss of 100 pounds in just half a year is entirely possible. However, if you don’t have surgery or go through unhealthy weight loss methods such as overexercising and/or starving yourself, then such a significant loss of fat and weight is probably not possible.

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How Much Weight Can You Realistically Lose in 6 Months?

According to the Centers for Disease Control and Prevention, healthy and sustainable weight loss is achieved through good nutrition, regular physical activity, and stress management (4). 

If these 3 conditions are met (and you have no underlying factors that affect your health), then experts claim that you should expect a slow and gradual loss of 1 to 2 pounds a week (4).

This means that if you follow the steps above, then you should expect a loss of 4 to 8 lbs in a month. Therefore, in 6 months you should expect to see a loss of anywhere between 24 and 48 pounds. From these calculations, we can see that losing 100 pounds in 6 months means losing more than double the estimated amount.

Not only is such a loss considered too quick to be healthy, but it likely won’t be sustainable in the long term and you could end up regaining the weight, bringing you back to square one.

Read more: 7-Day Diet To Lose 10 Pounds: Diving Into Why Rapid Weight Loss Is A Pipe Dream In And Of Itself

How Long Does it Take to Lose 100 Pounds?

So if 6 months is too little time for the majority of the population to lose this much weight, how long should you wait to lose 100 pounds? Following the 1 to 2 lbs pace given by the CDC, the average person should give themselves 1 to 2 years to get rid of 100 lbs of weight:

 (100 lbs ÷ 4 lbs per month) = 25 months

(100 lbs ÷ 8 lbs per month) = 12.5 months

Don’t be disheartened by this. Yes, compared to the l00 lbs loss in 6 months, waiting a year to a little over two years can seem like a long time, but remember that above all else, weight loss demands patience.

Comparing your success rate to that of a few outliers will have you questioning your progress and increase the chance of you ultimately giving up. However, if you face the reality, practice patience, and are consistent in your efforts, two years will go by without you even realizing it and you’ll ultimately reach the body goals that you’ve been dreaming of. To learn more about losing 100 pounds in a year, check out our in-depth article on the topic.

Can I Transform My Body in 6 Months?

Yes, you can. 6 months is more than enough time to transform your body and health to a much better state than it is right now. While you may not achieve all your body goals by the 6-month mark, it’s still enough time to make significant and noticeable progress.

Weight Loss Tips to Help Transform Your Body in 6 Months

As stated above, with realistic expectations, you can transform your body in just half a year. Here are some scientifically proven weight loss tips and tricks that can help you do this:

  • Have a Proper and Realistic Plan

The saying ‘Failing to plan is planning to fail’ isn’t just for students or finance experts. This saying rings true in every aspect of life, including your fitness lifestyle. Some things you should think about and outline in your plan include:

  1. How much you weigh now and how much you’d like to weigh in 6 months – use the CDC guidelines for a realistic aim (4).
  2. What your diet is like at the moment and what changes need to be made.
  3. See your doctor and speak about your current health and how it may affect your weight loss. As previously mentioned, some medications and health conditions may make weight loss more difficult than it already is. Learning to navigate this will make the process less frustrating.
  4. Do you want to exercise or not? Yes, exercise does help with weight loss, but you can still lose weight without it, albeit at a slightly slower pace. Is this a fact that you’re okay with?

 

  • Eat a Healthy Nutritionally Balanced Caloric Deficit Diet

According to a review that looked at the best diets for weight loss and maintenance, researchers agreed that an energy deficit, not a specific type of diet, is the most important factor for this (5).

An energy deficit can be created in two ways – by eating fewer calories than your body requires in a day or by increasing your daily physical activity and burning more calories than you consume.

As your daily schedule of demands can interfere with how much exercise you can get in a day, eating at a caloric deficit may be the simplest way to do this. In addition, you can never out-exercise a bad diet. The recommended deficit of weight loss is 500 to 1,000 kcal less than your daily intake.

To learn how many calories you consume a day, track your calories for a week and take the mean average of the daily totals. Subtract 500 to 1,000 from the mean average number and you’ll have your new caloric target. Studies have shown that people who eat at a calorie deficit have better weight loss success than those who don’t (6).

Remember that a nutritionally balanced calorie deficit diet is one that consists of: (7)

  • High-fiber starches – These should be your main source of carbs. Things such as whole-grain products and other high-fiber options.
  • At least five servings per day of fruits and vegetables.
  • Limited consumption of foods that are high in fat or sugar or junk food in general.
  • Moderate amounts of dairy and meat products.

  • Increase Your Protein Intake

When it comes to the three macronutrients (carbs, proteins, and fats), protein plays a huge role in weight loss and the calorie burning process. Research has shown that when you consume more protein it helps: (8)

  • Boost your metabolism, which helps the body burn more calories while at rest.
  • Increase the feeling of fullness by reducing your level of the hunger hormone ghrelin, which keeps you from overeating and going above your recommended daily caloric deficit.
  • Promote muscle building, particularly when protein intake is combined with exercise. Remember that the more lean muscle you have, the more calories you will burn during and after exercise, which increases fat and weight loss.

The Dietary Guidelines for Americans 2020-2025 recommend that adults over the age of 19 years should get 10 to 35% of their total daily calorie intake from high-quality protein sources (9). 

Research has also shown that eating more than the recommended protein intake can optimize positive health and weight loss changes so if you can, try and go beyond the recommendations and consume anywhere between 1.2 and 1.6 g of protein per kg of your body weight each day (10)

  • Increase Your Fiber Intake

Fiber is a type of carbohydrate roughage that your body can’t digest. While this roughage is mostly known for its benefits against constipation, research has shown that it can be beneficial for weight loss.

One study published in The Journal of Nutrition in 2019 showed that increasing your dietary fiber intake, even without adjusting your macronutrient and caloric intake, can lead to weight loss and dietary adherence in overweight or obese adults(11).

A more recent study found that people who ate more fiber reported higher satiety levels and also had higher mean average weight loss results than those who ate less fiber (12). Fiber can be found in foods such as fruits, vegetables, whole grains, beans, and nuts.

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  • Reduce the Consumption of Refined Carbs and Added Sugars

Research on the impact of added sugars and refined carbohydrates has shown that the higher the intake of these two things, the greater the risk of excessive body weight and obesity (13, 14, 15).

  • Eat More Non-Starchy Vegetables and Leafy Greens

Not only are they rich in antioxidants that are good for your health, they’re also very low in calories. This means that you can consume large amounts of these specific foods without risking going over your recommended daily calorie intake.

  • Exercise

As previously stated, you can lose weight by simply changing your diet and following the tips we have mentioned. However, research has shown that a combination of diet and exercise seems to work best for weight loss compared to diet or exercise alone (16, 17).

When it comes to exercise, it’s recommended to use a combination of cardio and resistance/strength/weight training. The former burns a large number of calories during the workout session and does wonders for your heart health, while the latter builds muscle, which helps with continued calorie burning, even long after your workout session is done.

  • Reduce Stress Levels and Sleep More

Studies have shown that increased stress levels and a lack of adequate sleep can hinder your weight loss efforts (18, 19). Try healthy ways to manage stress levels such as walking in nature, meditating, or dancing. Also try adjusting your sleep schedule to ensure you get 7 to 9 hours of sleep per night.

Our previous article covers everything you need to know about  somatic exercises for weight loss.

  • Try Intermittent Fasting (IF)

Studies on IF have shown that this patterned eating plan can help with weight loss and prevent obesity (20). Check out our guide to 30-day weight loss intermittent fasting to learn more about this.

Read more: Realistic 3-Month Body Transformation Female: What to Expect

What Happens to Your Body After Losing 100 Pounds?

Your body will obviously look smaller and weigh less, but you may also notice that you’re sleeping better, feeling more confident, experiencing better moods, and have more energy than before. If you visit your doctor, they may also inform you that your risk of chronic illnesses such as cancer, type 2 diabetes, and hypertension has reduced.

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Why Do I Still Feel Fat After Losing 100 Pounds?

It could be linked to your mental health and perhaps the negative view you had of yourself and your body before losing weight. Being a bigger person can impact your self-esteem and how you view yourself. Losing weight doesn’t automatically fix these negative thoughts, so if you still look at yourself and feel fat, it may be beneficial to speak to a therapist and learn how to navigate these feelings.

Frequently Asked Questions

  • How do I get slim ASAP?

There’s no miracle to help you get slim quickly. If you want to slim down and maintain your new weight and figure, you must stick to a healthy diet that includes a daily caloric deficit and a regular exercise schedule of at least 30 minutes a day, 5 days a week.

  • How can I get slim in 6 months?

The weight loss tips previously discussed offer the best guidelines for how to slim down in 6 months. Remember that if you’re heavier, you may not achieve all your body goals within this time frame.

  • Is it safe to lose 40 pounds in 6 months?

Yes, it is. A gradual weight loss pace of 1 to 2 pounds a week can help you lose 40 pounds in 6 months.

  • How can I burn 1,000 calories a day?

The average person cannot burn 1,000 additional calories without the risk of over-exercising, something that is dangerous for your health.

The Bottom Line

Regarding the truth about how to lose 100 pounds in 6 months, the harsh reality is that this is simply a pipe dream for many who choose to achieve weight loss in healthy and sustainable ways. While some people may claim that they managed to do it, many of us cannot do the same. Instead of setting this as your goal, you should reduce your goal to something that is more healthy and realistic and work patiently and consistently toward it.

DISCLAIMER:

This article is intended for general informational purposes only and does not serve to address individual circumstances. It is not a substitute for professional advice or help and should not be relied on for making any kind of decision-making. Any action taken as a direct or indirect result of the information in this article is entirely at your own risk and is your sole responsibility.

BetterMe, its content staff, and its medical advisors accept no responsibility for inaccuracies, errors, misstatements, inconsistencies, or omissions and specifically disclaim any liability, loss or risk, personal, professional or otherwise, which may be incurred as a consequence, directly or indirectly, of the use and/or application of any content.

You should always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or your specific situation. Never disregard professional medical advice or delay seeking it because of BetterMe content. If you suspect or think you may have a medical emergency, call your doctor.

SOURCES:

  1. Factors affecting weight loss variability in obesity (2020, pubmed.ncbi.nlm.nih.gov)
  2. Factors Influencing Weight Loss Attempts and Long Term Weight Loss Maintenance (2021, researchgate.net)
  3. Factors Affecting Weight & Health (2023, niddk.nih.gov)
  4. Steps for Losing Weight (2023, cdc.gov)
  5. Optimal Diet Strategies for Weight Loss and Weight Loss Maintenance (2021, ncbi.nlm.nih.gov)
  6. Effect of behavioural techniques and delivery mode on effectiveness of weight management: systematic review, meta-analysis and meta-regression (2014, pubmed.ncbi.nlm.nih.gov)
  7. Weight-Loss and Maintenance Strategies (n.d., ncbi.nlm.nih.gov)
  8. Protein, weight management, and satiety (2008, ajcn.nutrition.org)
  9. Dietary Guidelines for Americans 2020-2025 (n.d., dietaryguidelines.gov)
  10. Protein “requirements” beyond the RDA: implications for optimizing health (2016, cdnsciencepub.com)
  11. Fiber Intake Predicts Weight Loss and Dietary Adherence in Adults Consuming Calorie-Restricted Diets: The POUNDS Lost (Preventing Overweight Using Novel Dietary Strategies) Study (2019, ncbi.nlm.nih.gov)
  12. Increased dietary fiber is associated with weight loss among Full Plate Living program participants (2023, frontiersin.org)
  13. Refined carbohydrates, phenotypic plasticity and the obesity epidemic (2019, sciencedirect.com)
  14. Association between changes in carbohydrate intake and long term weight changes: prospective cohort study (2023, ncbi.nlm.nih.gov)
  15. Added sugar intake is associated with weight gain and risk of developing obesity over 30 years: The CARDIA study (2024, sciencedirect.com)
  16. Diet, exercise or diet with exercise: comparing the effectiveness of treatment options for weight-loss and changes in fitness for adults (18–65 years old) who are overfat, or obese; systematic review and meta-analysis (2015, ncbi.nlm.nih.gov)
  17. A comparison of diet versus diet + exercise programs for health improvement in middle-aged overweight women (2020, ncbi.nlm.nih.gov)
  18. Stress and Obesity: Are There More Susceptible Individuals? (2018, ncbi.nlm.nih.gov)
  19. Sleep Deprivation: Effects on Weight Loss and Weight Loss Maintenance (2022, ncbi.nlm.nih.gov)
  20. Intermittent fasting and weight loss (2020, ncbi.nlm.nih.gov)

 

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