The Lasting Health

Unlock the healthiest version of you.

  • Home
  • Healthy Choices
  • Medical Conditions
  • Overall Well-Being

Sudden Weight Gain? 5 Reasons Why This Is Happening

September 4, 2024 · Healthy Choices
weight gain

Are you struggling with rapid weight gain? Check out the main reasons NOW!

Short-term weight fluctuations of 5 to 6 pounds within a 3-day period are not a big deal. This is something normal that can happen to anyone, but if you are experiencing sudden weight gain out of nowhere, this is when things can seem a little bit strange.

Maybe you think that you haven’t made any lifestyle or dietary changes, and this weight gain is not normal. Indeed, if no changes were made, this is not something that should happen, and there are a few reasons that can explain what’s going on.

Read on and discover the main causes of rapid weight gain and other symptoms that may appear and concern you.

weight gain
Photo by marino bocelli from Shutterstock

1. Quitting smoking

This is a classic cause of unexplained weight gain, and probably many of you already know about it. It’s also one of the common reasons people are afraid to quit smoking. They are concerned that if they do it, they will gain weight. If you were told that this is just a myth, oh, well, it’s not, and it’s all caused by the nicotine that is found in tobacco products.

But why is this happening? Nicotine is known to increase the metabolism, which means you will consume more calories than usual. It also reduces the appetite. Once someone stops smoking, they will probably be more hungry than they are used to because things are getting back to normal. As a result, they might eat more, and this is how the weight gain is explained.

A meta-analysis was conducted in 2015, and according to it, the average weight increase after quitting smoking is 4.1 kg over the course of five years. But there is no set rule. This differs from person to person, and another study shows that 65% of those who quit smoking managed to gain less than 5% of their body weight.

2. Medication

If you take medication, you should know that some medications contribute to weight gain. Most of the time this is a problem for those who take more medication than average because more pills mean higher chances to have one that increases your weight.

This can happen in more ways, from causing fatigue that leads to a less active life to increasing the appetite, eating more, and then gaining weight.

There is a large list of medications that can have this effect, but the main ones are steroids, insulin, beta-blockers, sleeping pills, and antidepressants. If you gained a few pounds lately and you have a prescription for any of these medications, this might be the explanation.

Hopefully, you don’t need to stop taking your prescription. There are medications out there that can treat the same issue without causing the same effects. This means you should go to your doctor and tell them about the unpleasant effects, and they will change your prescription with something more suitable that won’t cause problems anymore.

3. Kidney problems

Sudden weight gain? Do you have any other symptoms? Swelling in the legs, ankles, or feet? If this is the case, you should know that these are clear signs of kidney disease. Nephrotic syndrome or kidney failure can both be the cause, and you should seek medical help as soon as possible.

Your kidneys are the ones responsible for filtering all the waste products from your blood, and if they suffer damage, this means they are not able anymore to do their job properly. As a result, your body can have a hard time excreting fluids, and this can lead to a liquid buildup.

Some other symptoms that can indicate you have a kidney problem are muscle cramps, fatigue, loss of appetite, dry, itchy skin, persistent puffy eyes, and a frequent need to urinate. If you suspect your kidneys are not alright, better talk to your doctor.

4. Trouble sleeping

Your sleep is closely tied to many aspects of your health, and if you are gaining weight for no apparent reason, the lack of sleep can be the cause of it. Now we know that no one thinks that not sleeping enough can make you get extra pounds, but this is a fact, and you should consider investigating this before thinking about the worst possible causes for your weight gain.

When you are constantly tired because you are not sleeping well, you are also more tired. And when you are more tired, you will not really feel like doing physical activity. Being less active is one of the main reasons you gain weight.

Besides this, your appetite and your cravings might change. You might find yourself wanting to eat foods that are more calorie-rich, and if you go overboard with it, trying to feel better and more energized, this can cause weight gain incredibly fast.

Even more, a bad night’s sleep raises cortisol levels, slowing metabolism and increasing fat storage. The worst part is that this is a cycle. One problem will lead to another, and so on. For example, if you become obese or overweight, sleep apnea might appear, and this will make you sleep even less.

Then if you get sleeping pills prescribed, they can also increase the appetite, and this is how you end up gaining more and more weight and sleeping worse and worse.

weight gain
Photo by Nenad Cavoski from Shutterstock

5. Thyroid disorder

There are a couple of thyroid disorders out there, but the one that causes weight gain is called hypothyroidism. This is when your thyroid gland is not producing enough hormones, and as a result, your metabolism slows down.

This gland plays a big role in regulating your metabolism, and when your metabolism is slowed down, this leads to a decreased rate of calorie burning and, in the end, weight gain that may be regarded as unexplained.

But this is not the only sign of hypothyroidism. In addition to weight gain, as the body’s energy production is impaired, the individuals affected by this condition can feel sluggish and exhausted even after they rest enough.

In addition, stiff joints and aching muscles, constipation, depression, feeling cold, or having dry skin and hair can all be connected to hypothyroidism.

If you want to treat the weight gain due to hypothyroidism, it typically involves treating the underlying thyroid disorder. Once the thyroid hormone levels are stabilized through medication, many of the symptoms, including weight gain, may improve.

If you are struggling with sudden weight gain and you are not able to identify an immediate cause, it’s important to consider all the potential factors. We’ve presented the most common ones, and the best thing you can do is to talk about it with your doctor.

Once you understand the root cause, it’s possible to choose the right way to address the problem, and this can help you fix the weight gain.

This isn’t just about aesthetics, but it’s a clear signal that something in your body might be out of balance. Restoring this balance is essential if you want to live a long and happy life.

If you want to always keep your weight in check, you surely need a smart digital scale, and we have a great suggestion: ABLEGRID Body Fat Scale, Digital Smart Bathroom Scale for Body Weight, Large LCD Display Screen

Fiber is a staple of our diet, and when it’s missing, you can experience some unpleasant symptoms. Learn how to recognize the signs and see if you are eating enough fiber: 7 Subtle Signs You’re Suffering From Low Fiber Intake

Share this article

Facebook Twitter Pinterest LinkedIn Email

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Search

Latest Posts

  • An ink and watercolor illustration of a magnifying glass focusing on a healthy pattern of green and gold cells on a cream background. 7 Signs Your Liver Enzymes Deserve a Second Look
  • A woman sits on a sofa, shielding her eyes from a harsh beam of morning sunlight cutting through window blinds. 8 Signs a Headache Could Be a Migraine, Not Just Stress
  • An editorial ink and watercolor illustration showing a fatigued person resting above a symbolic view of a depleted bloodstream. 9 Signs of Anemia People Mistake for Just Being Tired
  • A woman sitting at a sunlit kitchen table holding a warm mug, reflecting quietly in a cozy, authentic home environment. 7 Signs Your Blood Sugar Swings Need Monitoring
  • An exhausted woman sitting on her bed holding a warm mug, with tissues and water on her nightstand in soft morning light. 8 Signs a Cough Has Lasted Too Long to Ignore
  • 9 Early Signs of Osteoporosis Worth Screening For 9 Early Signs of Osteoporosis Worth Screening For
  • An exhausted person sits on the edge of a bed at dawn, rubbing their temples in a dimly lit bedroom, feeling the effects of poor sleep. 7 Signs of Sleep Apnea Beyond Snoring
  • An elegant watercolor illustration of a woman's profile with a warm coral butterfly-shaped thyroid gland at her neck. 8 Signs Your Thyroid Could Be Underactive
  • An ink and watercolor illustration of a person sitting quietly, listening to subtle, rippling blue rings emanating from their chest. 9 Warning Signs of a Silent Heart Arrhythmia
  • Ink and watercolor illustration of a hand holding a minimalist magnifying lens over a constellation of star-like spots on an arm. 7 Signs a Skin Spot Needs a Dermatologist's Opinion

Newsletter

Get the latest posts delivered to your inbox.

Related Articles

Hospital safety hacks

18 Safety Facts Hospitals Will NEVER Tell You

What Are The Safety Hacks Every Patient Should Know About? Why Are Hospitals Avoiding To…

Read More →
Raw Food

12 Delicious Raw Foods You Should Be Eating Regularly

Have you considered the benefits of raw food? Today, The Lasting Health is taking you…

Read More →
Omega 3 fatty acids

11 Reasons to Add Omega 3 Fatty Acids to Your Diet NOW

The Lasting Health presents you: 11 reasons to add Omega 3 fatty acids to your…

Read More →
Dollar Tree food

10 Dollar Tree Foods That Are Good for Your Health (Nutritionists Say)

Let’s talk about some delicious and affordable Dollar Tree foods! If you want to save…

Read More →
Oncologist, Cancer Treatment

5 Things Oncologists NEVER Do to Avoid Cancer

How can you lower your risk for different types of cancer? It’s impossible to eliminate…

Read More →

13 Foods That Are Good For Your Heart

Have you ever wondered which foods are great for your heart’s health? After a certain…

Read More →
disease-fighting food

10 Miraculous Disease-Fighting Foods You’re Missing Out On

Disease-Fighting Foods The way you eat is one of the most crucial parts of living…

Read More →
diabetes-friendly food

4 Delicious Diabetes-Friendly Foods at In-N-Out

Did you know there are diabetes-friendly foods at In-N-Out? We all know that eating fast foods…

Read More →
vegan

10 Things That Happen If You Go Vegan For One Month

Things that might happen when you go vegan for a month! If you ever thought…

Read More →

The Lasting Health

Unlock the healthiest version of you.

Inedit Agency S.R.L.
Bucharest, Romania

contact@thelastinghealth.com

Explore

Do not sell my personal information

Privacy Policy

Terms and Conditions

Contact

Request to know

Request to delete

CA Private policy

Categories

  • Healthy Choices
  • Medical Conditions
  • Overall Well-Being

© 2026 The Lasting Health. All rights reserved.