16 Weight Loss Side Effects You Didn’t Know About!

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We tend to only think about the positive outcome when it comes to weight loss. When you’re looking good, what else matters? Actually, a lot matters.

You will be surprised when you know that weight loss actually has a lot of consequences, that no one ever mentions. We’re not inviting people to gain weight again, but you need to be careful if you’re planning a life-changing weight loss plan.

1- Depression Could Attack!

Normally when you’re paying attention to something, something else just drops. Same happens when you’re losing weight, you pay too much attention to your physical health that sometimes you just forget all about your mental health.

Many people showed great dissatisfaction after a long process of losing weight, although they reached their goals and looked fit enough.

Some people think that losing weight will magically solve every problem in their life, when they see that almost never happens, they get depressed with the thought that they wasted all this time to lose weight.

It’s easy for overweight people to throw all their problems on the concept of having low self-esteem due to being fat. When they see that being fat isn’t the foundation of all their problems, they often go into long episodes of depression. Although they feel a lot better, they move better, have better health, their mentality just doesn’t get affected enough and they may still feel low self-esteemed.

Scientists are still trying to find the exact relationship between weight loss and depression, but many people blame it on the fact that they work on something for so long, and when it’s over, they just ask themselves, what now?

2- Skin May Sag

Skin May Sag

While you may adapt to weight loss very fast, your skin doesn’t have the same exact speed.

One downside of losing weight is the appearance of skin after, as it often becomes loose and saggy, and stretch marks are the result.

This happens because skin doesn’t have the ability to shrink as fast as the body.

A solution to this problem would be focusing on a slower, steadier weight loss plan, to give skin a chance to shrink like the rest of your body.

During weight loss, it’s normal to lose some lean muscle mass, and with that comes even more sagging of skin. To prevent losing muscles, you can implement resistance exercises, like weightlifting.

When the case of skin sagging becomes so bad, some people resort to surgery to fix it.

3- Extra Sensitive to The Weather

It may sound odd, but actually losing weight causes you to feel colder more often than other people.

Studies have shown that this common weight loss downside has a direct relation to your metabolism and hormone changes.

Your metabolic rate normally slows down when you’re trying to lose weight, it’s a protective mechanism to try to conserve energy for the body, but the bad side of it is with conserving energy, your body doesn’t have extra calories to warm itself

Another common reason you may feel cold more often after losing weight is that you don’t have fat as an insulator anymore. After losing that extra layer of fat, you become more sensitive to changes in the weather.

4- It May Become Harder to Sleep

Problems in sleeping

Your sleep pattern may be challenged by your plan to lose weight.

The relationship between sleep and food is not a simple one. Food doesn’t only affect your sleep, but your sleeping patterns also affect what you choose to eat.

Sleep pattern is affected by a chemical called adenosine, which is secreted right before your melatonin rises. Although we mentioned before in another article that regulating sleep is essential for a successful diet, it might be become harder to sleep while you’re trying to lose weight because of changes in your diet.

In order to sleep well, you need high tryptophan levels, and they only get higher when you have carbohydrates and proteins in your system. When you’re trying to lose weight, you normally don’t eat as much as before, your body looks for food so it stays active, and you don’t sleep as fast as before.

5- Food May Taste Different

It may sound absurd, but people who have walked through a long diet plan, and achieved high weight loss, has repeatedly said that food doesn’t taste as delicious as before.

Studies showed that interest in food is regulated by hormones. Your stomach secretes ghrelin which makes you very hungry, that you may find a lot of types of food very appealing.

This taste change happens very evidently in people who went through bariatric surgeries to lose weight. Almost 90% of people who did those surgeries, reported that that food doesn’t taste as delicious as before, some even said it tasted dull.

That’s mainly because of changes in your hormones that negatively affect how taste receptors send information to your brain.

6- You May Reach a Plateau

The further you’ve reached in your weight loss plan, the harder it becomes to lose more.

It’s very common during a diet to gain some of the weight you lost again or reach a stop where you just don’t lose any more. This change is often caused because your metabolism slows down.

According to studies, another reason for this slowing down is the loss of lean body mass and your body adapting to needing fewer calories to go on.

It’s crucial for a diet to continue your healthy eating style, returning to your old diet would cause catastrophic results, you could gain even more weight than before.

7- You May Suffer Bone Loss

You may only notice that you’re losing fats, and not pay any attention to other losses during a diet. One of the most important is bone loss

People normally ignore this loss because its effects don’t appear immediately, but bone loss is actually dangerous because it could cause your bones to break more often.

To prevent this terrible consequence, you need to add exercise to your weight loss plan. While it may not stop it completely, it will make the consequences much less hard.

A study of obese men found that an exercise-only weight loss plan rarely caused any loss in their bones, but they also didn’t lose as much weight as other people who changed their eating plan completely.

To lessen this side effect of losing weight, you should get enough vitamin D in your diet, along with calcium. This can be achieved by sitting in the sun for a while, keeping dairy in your diet, and doing some strength training. Those won’t only burn your calories, but will also keep your bones intact.

It doesn’t matter if you’re following a low-carb or low-fat diet, they all can affect your bones negatively, so you have to watch it.

8- You May Develop Gallstones

You may not hear about this problem so often, but studies have proved that going on a diet can cause you to get gallstones in your gallbladder.

Gallstones are tough pieces of a hard material that develop inside your gallbladder. You may suffer from them after going through a weight loss process too fast.

If your body is healthy, digestive juices will be secreted by your gallbladder to break down your fats after a meal, so it will be digested.

Going on a diet causes you to eat less than before, which means your gallbladder won’t have to secrete those digestive juices anymore.

The gallstones develop and get stuck inside the gallbladder, which may cause a gallstone attack, followed by indigestion and great pain.

Gallstones don’t always show symptoms, but when they do, it can be pretty bad.

Surveys have shown that after nearly 15 weeks of low-calorie dieting, almost 10% of people get gallstones. After nearly 60 weeks, this percentage goes up to 30%. This especially shows in people who are losing weight super fast.

When people slow down their diet a bit, and maybe even take a break from it, their gallstones sometimes disappear without any other help, but that’s not always the case. In most of the cases, you’ll need medical care to get rid of those gallstones.

9- You May Lose Some Muscles

Muscle loss might occur

You may want to lose your fats, but you definitely don’t want to lose your muscles. If your weight is going down fast on the scale, it’s not necessarily because of you losing fats, there is a huge chance that you’re also losing a lot of muscles.

In normal diets, muscles are accounted for nearly 30% of the weight loss. That’s not a happy side note, as losing muscles may negatively affect your metabolism, your bone health, and even sometimes your immune system!

For males, reserving their muscle mass also preserves testosterone levels, which can be dropped during a long weight loss plan.

The easiest solution to this problem is resorting to exercise, with different types of exercise, the average loss of muscles decreases.

Getting more protein is also essential for your muscles during a diet.

10- You May Suffer a Deficiency in Nutrients

The excitement of going on a diet to lose weight may cause you to eat a lot less than you should. There is a number of calories that you have to eat in order for your body to be healthy. If you don’t eat enough calories, you are risking a deficiency in your nutrients.

Normally, on a low-calorie diet, it’s hard to take up all of the important nutrients your body needs, like iron, and vitamin B12.

Nutritional deficiency doesn’t have very nice consequences, it may cause you to suffer from hair loss, as a result of your body not getting enough nutrients to support its growth.

It also can cause you to be fatigued all the time because, during a diet, you don’t consume a lot of iron which may result in you getting anemia.

Another unfortunate side effect of nutritional deficiency is a weak immune system. This is caused by your stress hormones overwhelming your body and slowing down your immune system, and also because of lack of enough nutrients like proteins and vitamins that are essential for an active immune system.

A diet rich in whole foods can help prevent those problems, as they contain few calories and they can help you get full faster.

11- Visceral Fats Regaining

It may sound scary, but people who went through huge weight loss are actually more susceptible to gain that weight again, more than other people who haven’t.

People don’t just regain their normal fats after a long diet plan, they regain visceral fat, which is fat that is located around your organs, and they are much worse and unhealthier than normal fats.

If you want to imagine the situation, say you weighed 100 kgs (Nearly 220 pounds) at the start of the diet, then lost 20 kgs, leaving you at 80 kgs. At the worst case scenario, you will gain those 20 kgs again, and even though you will be back to your original weight, your health will be much worse as your metabolism will be negatively affected.

When you hit 100 kgs for the second time, the fat you gained will be more visceral than normal.

One way to prevent this, although not easy, to plan ahead very well as to prevent your body from regaining any fats. If you don’t gain normal fats, you’ll never gain visceral fats.

12- Much Less Energetic!

Calories provide the body with a lot of energy to go on with the day, going on a diet normally prevents you from having as many calories as before.

While your body will adapt to this change now or later, its overall performance will be affected for a long period of time.

Unfortunately, no diet can be successful without cutting down those calories, you simply can’t lose weight if you continue on taking up the same number of calories.

However, you can try to maintain a deficit of calories that is healthy for your body and will allow you to have enough energy to do all of your daily activities without feeling fatigued.

13- You May Suffer an Eating Disorder

The main reason for accumulating fat is your body consuming more calories than it is burning per day.

If you decide to go on a long journey of weight loss, make sure to make the transition between eating and eating less smooth, do not go all the way from overeating to an under-eating disorder.

The majority of people who decide to go on a rough diet, especially teenagers, become at risk of developing eating disorders like bulimia or anorexia.

Do not let the body of a model that appeared in a magazine get into your head, other than the fact that those photos are largely edited and photoshopped, it could cause you to neglect your health and just stop eating altogether. Diseases like bulimia and anorexia might not get the attention they need, but they can be life dangering if not controlled.

Studies have shown that nearly 1\3 of teenagers (Mostly girls) have developed eating disorders at some point in their life from following an under-eating plan, and this number is not going down any soon.

If you want to lose weight in a healthy manner without developing those disorders, you have to convince yourself that losing weight will not solve all your problems and cause you utter satisfaction, so it’s alright to take your time to lose it.

It would also help to stop judging yourself or other people by the number that appears to them on the scale, there is more to a person that just a number. Don’t let toxic thoughts control you, and give your body the time and care it needs to lose weight without costing you your health.

14- Your Hormones May Go All Crazy

Your hormones are affected by your body weight more than you think.

Women who go on diet normally don’t think about the effect the weight loss is going to have on their body hormone-wise, but actually, their menstrual cycles are hugely affected by this change.

Studies have shown that excess body fat has a direct relationship with the increase in levels of estrogen and other hormones. Those hormone levels decreased by a significant ratio as overweight women went on a diet and lost a lot of weight.

The effect this change has on the menstrual cycle may not be obvious, but it sure is significant. For example, it may cause you to have a lighter or heavier flow, and it may also result in a change in the length of the cycle, causing it to be longer or shorter.

The changes may be extreme to the extent that you may stop getting your period, not only because of the stress you exert on your body during weight loss plans but also because of the protein, Lectin. Lectin will stop your body from having its menstrual cycle as a reaction to the body starving itself, and it’s never healthy for a woman who is starving herself to get pregnant.

On the other side, studies have shown that women who lose weight have a much more reduced risk of getting breast cancer, as obese women have a rise in their hormones level, increasing the risk to get a tumor.

So losing weight and exercising is actually worth the effort, as you will be overall healthier.

15- Anger Issues

We can try to sugar coat it, but there’s no hiding the fact that obese or overweight people are treated differently in our society. Worst case scenario, people can be bullied just for eating more than others.

Studies proved that even employment decisions were affected by how much people weigh, as overweight people would repeatedly get passed over, even compared with much less valid candidates for the job.

While it may feel good to lose weight and finally feel like society is beginning to accept you, it will cause you some anger when you realize that you have judged immensely by your weight and not your character.

Surveys showed that people felt disappointed after losing a lot of weight because they felt that their character had no value whatsoever to the society, which made them feel downgraded.

16- It May Affect Your Metabolism Forever!

You may think that losing weight faster than normal is an accomplishment, but it’s actually a risk to your overall health, as it can significantly affect your metabolism.

Your metabolism is the decision maker of how many calories your body can burn per day, having a slower metabolism as a result of losing weight at an abnormal speed, means your body will burn much fewer calories than you want per day.

The percentage of you burning calories can go down by nearly 20% when you’re losing weight faster than normal, and you don’t want that if you’re planning on saying goodbye to those fats forever.

The main reasons that cause metabolism to slow down are muscle loss and drop in your hormone levels, especially thyroid hormone. If you think that your metabolism will go back to normal after stopping the diet, you’re wrong, it will be affected for a very long time and it may never go back to normal, so you need to watch your health closely if you plan to lose a lot of weight.


We’re not saying that losing weight is bad for your health, it’s actually very beneficial and sometimes necessary to live a normal life, but your body won’t accept extreme change without a bad consequence.

If you want to lose a lot of weight, and never gain it back, you need to give your body the appropriate time to adapt to the dietary change and never rush it to lose those fats, because they will return demanding revenge.

So, how could you do that? Well, here are 3 of our favorite, science-based weight loss methods for this year: Intermittent Fasting, Red Tea Detox, and The Fat Decimator System. Check them out!

Any action regarding your body should be taken in a sensible manner as to prevent any permanent changes that may affect your future health.

You don’t have to cut your weight loss plan short after reading this, but you may need to slow it down a notch and make sure your body is getting all the nutrients it needs to go through life normally.

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