If you or someone you know has sleep troubles, you’ve probably heard of melatonin and its role in promoting better sleep. However, have you considered the possibility that melatonin may also help with weight loss? If you also struggle with maintaining a healthy weight, melatonin may be able to help you reach your goals, but don’t think of it as a silver bullet for eliminating body fat.

Melatonin is a hormone that is naturally produced by the brain, specifically in the pineal gland. It is used to control the body’s sleep cycle; essentially, it makes sure that you fall asleep at night and wake up during the day. If you have trouble falling asleep, or your sleep cycle is out of balance, melatonin supplements can help with that.

Typically, if a person regularly suffers from any sleep disorder, whether it be trouble falling asleep in the first place, getting a deep enough sleep, or getting sleep without interruption, melatonin supplements are used. Aside from this, however, there is some information that suggests melatonin has other health benefits, and it’s thought that weight loss may be among them.

The key to this belief is the link between weight gain and sleep deprivation. We’ve all heard of the recommendation for sleep: get at least eight hours at night. This is especially true if one wants to lose weight. Thinking about it this way, it’s clear to see how melatonin might contribute to weight loss. That being said, the best way to lose weight is to eat a healthy diet, and exercise regularly.

More About Melatonin


Even though the body naturally produces melatonin, certain disorders can limit its production or its effectiveness. This is what melatonin supplements are for. As a sleep supplement, it is used to help patients sleep, provide them with calmness, and ensure they are awake, rested, and alert during the day. To do this, it helps relieve insomnia, as well as jet lag and other sources of fatigue. It helps create a calm and restful state of mind by reducing stress to make sleep more comfortable and more rewarding. It also supports brain function and general well-being.

Safety and Dosage


When it comes to dosage, it’s essential to stay between 0.5 and 5 mg per day. This is because while it is considered “likely safe,” there is always some risk of developing an addiction or dependency; ultimately, because of its limited euphoric effect, there is a possibility of forming a dependency.

Keep in mind that when it comes to taking melatonin for weight loss, no dosage has been established. Furthermore, the Natural Medicines Database has not rated its efficacy as a weight loss aid. Even as a sleep aid, there has been some disagreement concerning how much should be taken, with results peaking around 12mg at bedtime (taken for no longer than a month). However, studies tend to champion smaller doses over larger ones. When taken for metabolic syndrome, which could be thought of in the same manner as weight loss, the recommended dosage is 5mg maximum on a nightly basis for no more than two months.

Melatonin has a low incidence of side effects, which is another reason why it could be thought of as helpful for weight loss. Some users have complained of minor side effects, including headaches, as well as drowsiness when awake. A few more serious side effects have been reported by users as well; these include mild tremors, cramps in the abdominal area, and even anxiety.

Related: The Key to Weight Loss You’re Ignoring

Certain people definitely shouldn’t use melatonin; however; children, for example, should avoid long-term use. Additionally, pregnant women, and those who are lactating should likewise avoid using melatonin. As always, there is the possibility that melatonin may interact with other drugs, supplements, or herbs. For this reason, it’s important to speak to a medical professional before combining it with other substances or supplements.

How Melatonin Works


Melatonin plays a significant role in the sleep-wake cycle; in the case of humans, this means the act of falling asleep in the dark (night) and waking up in the light (day). This carefully regulated set of physiological processes is referred to as the body’s circadian rhythm, and it is essential for overall health and wellness.

Ultimately, the process hinges on the detection of light. If there is a high level of light in a person’s surroundings, the eyes will detect this, and notify the brain. In turn, the brain, via the suprachiasmatic nucleus, will signal other parts of the brain to release the appropriate hormones and take other actions to dial up alertness or arousal. Of course, the opposite is true as well. When it is dark, different signals are sent, and high levels of melatonin will signal the body that it is time for sleep, and the associated functions that come with it.

Melatonin isn’t just responsible for telling the body when to sleep; the level of melatonin also affects the quality of sleep, as well as the depth, and can increase REM sleep, which is crucial for health and development. This is because a significant number of critical bodily functions are carried out while we sleep, including the resetting of neurotransmitter levels and the detoxification of the body. Additionally, “always on” organs like the heart and the lungs slow in their processes to rest and recover from daily stress.

However, if the body is not able to complete these functions for whatever reason, be it because sleep does not come (insomnia) or sleep is regularly interrupted (sleep disruption), then things can quickly begin to spiral out of control. For starters, the body will take on increased stress due to an inability to offload stress and repair systems. There are many adverse side effects that come with this, including things like weight gain, the breakdown of muscle, and water retention.

On the other hand, a good night’s sleep will generate positive effects that help keep waking life on track. This includes the level of health in all aspects: bodily, cognitive, and emotional health. This is due in large part to the fact that getting a good night’s sleep helps to keep down the levels of hormones like cortisol. Cortisol is a stress hormone that is beneficial in small amounts. However, excess levels of cortisol can cause problems with the body, including interference with fat loss.

Reading this, you might be tempted to pick up some melatonin. As mentioned earlier, don’t think of melatonin as a fat burner or weight loss tool on its own (especially in the absence of sleep problems). Instead, consider how it might help your goals when combined with dieting and exercise.

Research on Melatonin and Weight Loss


While there have been some studies that support the use of certain melatonin sleep aids to lose weight, these studies do not paint the entire picture. This is because only a specific subset of the population was examined during the studies mentioned above, so there is room for much more research before any substantial claims about the relationship between melatonin and weight loss can be made. Consider the following, for example:

  • In one clinical study, it was found that for postmenopausal women, melatonin supplements led to reduced body weight; in spite of this, researchers were not confident of melatonin’s role in such results.
  • A study performed on animals indicated that melatonin cut down the obesity levels of diabetic fatty rats, and did so independently of changes in diet and exercise. However, the study also found evidence of brown fat among white adipose tissue. This is a pattern that is connected to reduced obesity.
  • For people suffering from metabolic syndrome, it was found in a clinical study that the administration of melatonin led to a slight reduction of waist circumference. This particular health condition is known to be associated with excess fat in the belly area, as well as high blood pressure, high blood sugar, and heightened levels of cholesterol.

As mentioned earlier, there is some evidence of a clear melatonin-weight loss connection via sleep cycles. Because sleep helps de-stress the body, which keeps it on track for losing weight, melatonin to aid sleep can potentially lead to better weight control. There is further evidence for this, given that too much and too little sleep are both connected to gaining weight.

Related: 8 Unusually Effective Science-Backed Weight Loss Tips

Keep in mind, however, that these studies are very limited, and melatonin for sleep helps to regulate weight, rather than directly meet weight goals. As of yet, no evidence suggests that melatonin employed by itself can lead to significant or sustained weight loss; a healthy diet and other lifestyle changes are necessary.

Melatonin Supplement Reviews for Weight Loss


When it comes to using melatonin for weight loss, there is not an abundance of user reviews. Ultimately, reviews focus on the primary use of melatonin: facilitating longer, fuller, uninterrupted sleep.

Most of the melatonin reviews found on are positive in nature. Typically, reviews relate to the fact that melatonin products helped the customers fall asleep and stay asleep, without creating the familiar daytime drowsiness that certain varieties of sleeping pills have been known to cause. However, the products are not without their share of negative reviews as well. Negative reviews tend to communicate that the pills were not effective for those who used them.

Ultimately, from a pool of nearly 900 customer reviews, melatonin supplements are said to reduce insomnia and fatigue, improve metabolism, and contribute to a more restful sleep. This might have to do with a time-release formula that prevents spikes and valleys.

Related: 12 Foods That Will Accelerate Your Weight Loss

To conclude, it’s important to keep in mind that melatonin, along with other dietary supplements (even those tried and true), are not to be thought of as magic bullets for burning fat. They will not cause significant weight loss on their own; the title dietary supplement clarifies that they are to be used in conjunction with the appropriate dietary and lifestyle changes for optimal effect. If losing weight and staying healthy in the long term are your goals, then start by eating a healthy diet that includes lots of fruits and vegetables, some grains, and a modest level of protein (with very little, if any, from red meats), and get into the habit of exercising regularly.



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