Mental Health

Mental health is central to your wellbeing. It influences how we think, feel, cope with difficulty, and function day to day. This page brings together evidence-based information on stress, depression, anxiety, low mood, resilience, and the lifestyle factors that support psychological wellbeing. 

How Sleep Affects Your Brain & Mental Health

Poor sleep doesn't just leave you tired — it alters how your brain processes emotions, memories, and protects itself against mental disorders and damage.
Read Article

Is Exercise Good for Depression?

Research shows that regular exercise helps with depression, comparable to routine care. This makes it one of the best treatments around.
Read Article

Does Exercise Help Anxiety?

Regular physical activity can reduce anxiety comparable to some standard treatments — it may even help prevent anxiety from starting in the first place.
Read Article

It's your emotional, psychological, and social well-being. It shapes how you process experiences, manage stress, maintain relationships, and make decisions. Good mental health is not a luxury; it is foundational to overall health.

While both have similar physical symptoms (like a racing heart or disrupted sleep), stress is usually caused by an "external" cause (e.g., a deadline, a difficult conversation, or financial pressure) and tends to go away when that stressor is removed. Whereas anxiety is characterised by persistent worry or fear that may continue even when there is no immediate threat.

Yes — there is good evidence that lifestyle factors meaningfully affect mental health. Regular physical activity, adequate sleep, a nutritious diet, reduced alcohol consumption, time in nature, social connection, and practices such as mindfulness have all been shown to support psychological well-being.

If you are experiencing persistent low mood, anxiety, or distress lasting more than a couple of weeks, if your symptoms are affecting your work, relationships, or daily functioning, or if you are having thoughts of harming yourself. You do not need to be in a crisis to see a doctor. Seeking help early generally leads to better outcomes.

Poor physical health, such as pain, cardiovascular disease, and hormonal imbalances, can significantly affect mental health. Equally, poor mental health is associated with worse physical health outcomes. Treating them in isolation is rarely the most effective approach.

Mediterranean Diet for Weight Loss & Health

A practical overview of the Mediterranean diet, highlighting its benefits for fat loss, long-term health, and sustainable eating habits.
Read Article

Oily Fish: Health Benefits, Best Choices & How Much to Eat

An overview of oily fish as a superfood, highlighting heart, health, and brain benefits. Get the recommended servings, what to eat, and practical tips to get omega-3-rich fish in your diet.
Read Article

Our Editorial Approach

Alphabet Guides publishes practical evidence-based content using trustworthy, peer-reviewed research: information you can actually use. Learn more About Us and our Editorial Standards.