Why Do We Feel Irritated When We Are Hungry?

By Vanshika Gaur
29 May 2025, 19:30 IST

Have you ever noticed that some individuals become irritated when they are hungry? It is because our bodies experience a sudden drop in glucose levels and energy levels, leading to irritability. Here are a few more reasons why I feel irritated when hungry. Tap to read!

Drops in Blood Sugar

We feel irritated when hungry because our blood sugar level drops (glucose), affecting our brain function, especially mood regulation.

Increased Ghrelin

Ghrelin, a hunger hormone, is released when we are hungry. This hormone also affects our brain, making us more susceptible to irritation or anxiousness.

Releases Stress Hormones

When we are hungry, our body releases cortisol and adrenaline (stress hormone), which increases the feeling of irritation and tension.

Impaired Cognition

Hunger also leads to impaired cognition, such as brain fog or reduced ability to think clearly, making it difficult to control emotions and leading to irritation.

Lowers Serotonin

Serotonin is known to stabilise mood and promote self-control. However, when we are hungry, serotonin levels drop, making us feel irritated.

Information Credits

According to PubMed, when we are hungry, our serotonin and blood sugar levels drop making us feel irritated. It is advisable to consult a healthcare professional for personalised suggestions.