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September 12, 2026
Table of Contents
The brain, especially the hypothalamus, regulates hunger through hormones like leptin and ghrelin. Inflammation can disrupt this system, leading to overeating. Psychological issues, such as stress and anxiety, can trigger binge eating, while dieting may cause the body to enter survival mode, slowing metabolism and promoting overeating.
To manage weight effectively, a healthy diet and lifestyle are essential for supporting brain function and overall wellness.
The brain is a powerful organ. It assembles messages and, amongst its numerous functions, lets us know when we're hungry. But is the brain making you fat?
The Hypothalamus Factor
The hypothalamus is a small region of the brain, but (and to use a term more commonly used in sports) it punches way above its weight and effectively too! Its multiple functions include regulating our body temperature and emotional responses [1].
It also controls our appetite [2].
The hunger hormones leptin and ghrelin directly communicate with the hypothalamus.
Leptin signals the brain to let it know we don't need to eat anymore, as we've reached the required energy intake from the food we eat.
However, when inflammation occurs in the brain, communication between leptin and the hypothalamus is disrupted.
This disables the brain's ability to signal that we are full, and as a consequence, we continue to eat. And eat.
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Mind over matter
Stress, depression and anxiety are psychological conditions that disrupt your entire body system, including the brain [3].
They can lead to binge eating as a coping mechanism [4], and this is not only detrimental to our weight but also to our overall wellness.
Another harmful psychological effect that ironically can lead to excess weight gain is dieting [5].
Our body is designed for survival. We may be on a diet, but the body still needs sustenance to function, and most of the time it doesn't register that we are.
So it sends signals to the brain that we are not eating enough, and this often leads to overeating.
Also, when the body senses that food is scarce, it will enter saving mode.
This means our metabolism slows down to stop us from burning fat.
With that said, dieting is not necessarily a bad thing.
The key is to do it safely and appropriately, according to your own body's needs.
So Is The Brain Responsible For Weight Gain?
In general, the brain is responsible for many things, including controlling food intake and weight regain [6, 7]
To help it function properly, the quality of the food we eat is important.
When we eat healthy and pair that habit with healthy lifestyle practices such as exercise, yoga, and others, we'll experience positive changes in both our body and mind.
It's time to take control of your brain and wellness.
