It Is Not Only a Chemical

Tom, twenty-nine, was an engineer in Glasgow who had been feeling flat for months. He ate takeaway at his desk, slept until noon at weekends and rarely saw friends. After a visit to his doctor, he read online that depression is 'just a chemical imbalance' and became fixated on it. 'If it is only chemicals, then nothing I do matters,' he told his sister Fiona.

Fiona said she did not think it was so simple. They looked up the simple explanation together. Brain chemicals, called neurotransmitters, carry messages between nerve cells. Serotonin is involved in mood, sleep and appetite. Dopamine is linked to motivation and reward. Noradrenaline helps with alertness and the stress response. But these chemicals are only one part of the picture. Sleep, food, exercise, stress, relationships and thinking patterns all influence them, and are influenced by them.

Tom went back to the doctor and asked what could help. The doctor listened, talked about treatment options including talking therapy and, if appropriate, medical treatment, and said that any decision about medicines would be made together. He also encouraged simple habits: daylight, regular meals, walks and contact with friends. Tom agreed to try a Saturday football kickabout with his old teammates and a weekly counselling session.

After a few weeks his sleep steadied and the flatness lifted a little. He told Fiona, 'It is not either my chemicals or my choices. It is both, working together.'

How to recognise it

Persistent flat or low mood, low motivation and poor energy.
Poor sleep and eating, little exercise and less social contact.
A belief that 'it is only chemicals so nothing helps' or the opposite, 'it is only attitude'.
Lack of pleasure in things that used to be enjoyable.
Symptoms lasting more than two weeks and affecting work or relationships.

What this story explains

This story shows neurotransmitters such as serotonin, dopamine and noradrenaline and the mind-body connection. It teaches that brain chemistry is influenced by sleep, nutrition, exercise, stress and relationships, so both medical care and lifestyle matter.

Probable root causes

A mix of biology, including brain chemistry and family history.
Poor sleep, diet and low physical activity.
Stress, isolation and loss of routine.
Unhelpful thinking such as 'nothing matters'.
Misleading messages that make it seem like a simple fault to fix.

What to do

See a doctor and describe symptoms honestly.
Ask about all options: talking therapy, lifestyle changes and, if appropriate, medicines.
Build simple daily habits: daylight, regular meals, movement and sleep.
Reconnect with at least one friend or activity each week.
Challenge extreme thoughts like 'nothing helps' with a trusted person.
Review progress with the doctor and do not stop any treatment on your own.

Whom to consult

Family doctor as the first step for assessment and referral.
Psychiatrist for diagnosis and decisions about medical treatment.
Clinical psychologist or counsellor for talking therapy.
Emergency number or nearest hospital if there are thoughts of ending life.

Do and don’t

Do	Don’t
Do get a proper assessment.	Don't believe it is only chemicals or only willpower.
Do look after sleep, food and movement.	Don't skip meals and sleep.
Do stay connected with people.	Don't isolate yourself.
Do ask questions about treatment.	Don't stop or change medicine without the doctor.
Do be patient with progress.	Don't ignore thoughts of self-harm.

How to behave and communicate

Use a warm, non-judging tone: 'I can see this is hard. Let us look for what helps.'
Explain simply that body and mind work together.
Listen without trying to fix.
Avoid 'snap out of it' or 'just be positive'.
Invite small shared activities such as a walk or meal.