How Physical Health Affects Mental Health
Quick facts: Contrary to popular belief, physical and mental health affect each other, meaning that looking after one can help to support the other. Physical issues that can impact mental wellbeing include:
- Pain
- Disrupted sleep
- Stress about health issues
- Enforced isolation
- Frustration relating to health changes
- Side effects of treatments
- Malnutrition.
Equally, looking after your physical health can help to prevent these problems impacting your mental wellbeing.
Looking after your mental health isn’t always straightforward. Symptoms can sometimes be subtle, easy to dismiss or mistaken for nothing more than a bad day. But while mental wellbeing is often discussed separately from physical health, the two are closely linked.
Research increasingly shows that physical and mental health influence one another in complex ways.1 Physical symptoms can affect mood, energy levels and daily functioning, while mental health challenges may impact our ability to look after our physical wellbeing.
Understanding the relationship between physical and mental health can help you to understand your body and make informed choices about your health and wellbeing. Keep reading to learn more.
How Can Physical Health Affect Mental Health?
It can be tempting to view physical and mental health as completely separate, but in fact they’re deeply interconnected. Physical health issues can influence emotional wellbeing directly through symptoms and discomfort, or indirectly through lifestyle changes and social impacts.
In some cases, physical health challenges may contribute to feelings of stress, anxiety, frustration or isolation. Long-term health conditions have also been associated with a greater likelihood of experiencing mental health difficulties.2
Pain
Living with pain can have a significant impact on emotional wellbeing. Whether it’s acute pain from an injury or ongoing discomfort associated with a chronic condition, persistent pain can affect mood, concentration and quality of life.
People experiencing long-term pain may find everyday activities more difficult, which can contribute to feelings of frustration, worry or low mood.2 Pain can also reduce participation in hobbies, work, exercise and social activities, further affecting mental wellbeing.
Disrupted Sleep
Sleep and mental health have a close relationship. Physical health issues that interfere with sleep – such as pain, illness, breathing difficulties or hormonal changes – may affect emotional wellbeing over time.3
Poor sleep can influence mood, concentration, stress management and resilience. Equally, ongoing sleep disruption may make it harder to cope with everyday challenges, potentially creating a cycle in which physical symptoms and poor sleep continue to reinforce one another.
Stress and Anxiety
Physical health concerns can sometimes become a source of stress and anxiety. Worries about symptoms, medical appointments, treatment plans or uncertainty about recovery may all contribute to increased psychological strain.
In some cases, people may feel anxious about how a health condition affects their work, finances, relationships or future plans. While occasional worry is normal, prolonged stress can affect overall wellbeing and quality of life.4
Isolation and Loneliness
Certain physical health conditions can make socialising more difficult. Mobility limitations, fatigue, pain or ongoing treatment requirements may reduce opportunities to spend time with friends, family or colleagues.
Over time, reduced social interaction can contribute to feelings of loneliness or isolation, both of which are recognised as important factors influencing mental wellbeing.5 Maintaining social connections where possible may help to support emotional resilience during periods of ill health.
Anger and Frustration
Physical health challenges can sometimes lead to feelings of anger, frustration or disappointment. This is particularly common when symptoms affect independence, daily routines or the ability to participate in valued activities.
These emotional responses are understandable and often form part of the adjustment process when coping with health-related changes. Recognising these feelings and seeking support when needed can help you to manage them more effectively.
Treatment Side Effects
Some medical treatments may have side effects that affect emotional wellbeing. For example, medications, surgery recovery or intensive treatment schedules can sometimes contribute to fatigue, sleep disruption, mood changes or reduced energy levels.
Everyone is different, so your own experience of this can vary from someone else’s. Regardless, it’s important to recognise that treatment-related challenges can influence mental wellbeing as well as physical health.
If you’re concerned about the side effects of a medication or treatment plan you’re on, it’s best to discuss this with your doctor.
Malnutrition
Nutrition plays an important role in overall health, including normal psychological function. Poor nutrition or inadequate intake of essential nutrients may affect energy levels, concentration and emotional wellbeing.
A balanced diet helps to provide the vitamins and minerals the body needs to support normal physiological functions. Nutrients such as the B vitamins contribute to normal psychological function and normal energy-yielding metabolism when consumed in sufficient amounts.6
Conclusion
Mental and physical health are closely connected, and changes in one can often influence the other. Pain, disrupted sleep, stress, isolation, treatment side effects and poor nutrition can all affect emotional wellbeing in different ways.
While not every mental health challenge originates from physical health concerns, looking after your body through healthy habits, good nutrition, regular activity and appropriate medical care can help to support overall wellbeing.
Understanding the relationship between physical and mental health encourages a more holistic approach to wellbeing – one that recognises the importance of caring for both mind and body.
FAQs
What Is Meant by Mental Health?
It’s not always easy to pin down the exact definition of mental health, but it relates to your social, emotional and psychological wellbeing. This affects how you:
- Think
- Feel
- Behave
- Cope with stress
- Relate to others
- Make decisions.
Mental health exists on a spectrum and can change throughout your life depending on personal circumstances, physical health, relationships and other factors.
How Many People in the UK Are Affected by Mental Health Issues?
Mental health challenges are common in the UK. According to Mental Health Foundation estimates, approximately one in six adults experience symptoms associated with common mental health problems, such as anxiety or depression, during any given week.7
That equates to nearly 9 million people in the UK alone.
Can Nutrition Support Mental Health?
Nutrition is one factor that contributes to overall wellbeing, including normal psychological function. A balanced diet provides essential nutrients needed for many processes throughout the body and brain.
While nutrition alone cannot prevent or treat mental health conditions, maintaining healthy dietary habits may form part of a broader approach to supporting wellbeing alongside sleep, physical activity, social connection and professional support where needed.6
References
(1) World Health Organization. (2022). Mental health: Strengthening our response. Retrieved from https://www.who.int/news-room/fact-sheets/detail/mental-health-strengthening-our-response
(2) National Institute of Mental Health. (2023). Chronic illness and mental health. Retrieved from https://www.nimh.nih.gov/health/publications/chronic-illness-mental-health
(3) NHS. (2024). Sleep and tiredness. Retrieved from https://www.nhs.uk/live-well/sleep-and-tiredness/
(4) NHS. (2023). Loneliness and mental health. Retrieved from https://www.nhs.uk/every-mind-matters
(5) British Dietetic Association. (2024). Food and mood. Retrieved from https://www.bda.uk.com/resource/food-facts-food-and-mood.html
(6) World Health Organization. (2022). Mental health. Retrieved from https://www.who.int/health-topics/mental-health
(7) McManus, S., Bebbington, P., Jenkins, R., & Brugha, T. (Eds.). (2016). Mental health and wellbeing in England: Adult Psychiatric Morbidity Survey 2014. NHS Digital. https://digital.nhs.uk/data-and-information/publications/statistical/adult-psychiatric-morbidity-survey/adult-psychiatric-morbidity-survey-survey-of-mental-health-and-wellbeing-england-2014
