Could your anxiety be your nervous system asking for fuel?

When we think about mental health, we often start by asking what's happening in our minds.

"Why am I anxious? Why can't I concentrate? Why do I suddenly feel overwhelmed by things I would normally cope with?"

They're important questions. But sometimes there's another one worth asking first.

"Have I given my brain what it needs to function today?"

Mental health is never just psychological. Our thoughts, emotions and experiences matter, but so does biology. The brain and body work as one system, and when one is under strain, the other feels it too.

Your brain needs fuel

Although your brain makes up only around 2% of your body weight, it uses about 20% of your body's energy.

When we go for long periods without eating, blood glucose begins to fall and the body releases stress hormones such as cortisol and adrenaline. Your brain doesn't know you're simply caught up in meetings or running errands. It only knows that energy is becoming scarce.

Its job is to keep you alive, so it becomes more alert. That heightened state can feel surprisingly similar to anxiety. You might notice racing thoughts, irritability, poor concentration, feeling on edge or becoming overwhelmed by things you would normally manage with ease.

Sometimes what feels like an emotional alarm begins as a biological one.

Why protein matters

Protein is one part of the foundation.

It provides the amino acids your brain uses to produce neurotransmitters such as serotonin and dopamine, which help support mood, motivation and emotional regulation. Protein also helps provide more stable energy throughout the day, reducing the highs and lows that can leave us feeling depleted.

This doesn't mean eating more protein will cure anxiety. Mental health is far more complex than that. But it is difficult to ask an under-fuelled nervous system to regulate itself well.

The foundations come first

In therapy, we often explore relationships, emotional patterns and the experiences that have shaped us. Those conversations matter deeply.

But they're supported by something more fundamental: sleep, nutrition, movement and connection.

These aren't quick fixes. They're the foundations that give our nervous system the best chance to feel safe and resilient.

Sometimes the first step isn't asking, "What's wrong with me?"

It's asking whether your brain and body have the resources they need.

Looking after your mental health means looking after the whole person.

Food won't replace therapy, and therapy won't replace food. Both have an important role to play.

When we begin with the foundations, we give ourselves the best chance to do the deeper work that lasting wellbeing requires.