Beyond symptoms: nutritional therapy in practice

Nutritional therapy takes a personalised, evidence-based approach to health, looking beyond individual symptoms to understand the wider picture. Catherine Morgan explores how it works in practice, where it can complement conventional healthcare, and why understanding the individual can make all the difference.

Food is fundamental to health. From supporting energy, immunity and metabolic health to influencing the gut microbiome and healthy ageing, what we eat can have far-reaching effects on how we feel and function. As nutritional science continues to develop, there is growing recognition that nutrition can play an important role alongside conventional healthcare.

So, what exactly is nutritional therapy?

At its heart, nutritional therapy is about recognising that no two people are the same. Rather than relying on a one-size-fits-all diet, nutritional therapy practitioners take an individualised, evidence-informed approach, considering a person’s health history, symptoms and goals to develop tailored nutrition and lifestyle recommendations.

For ION-trained registered nutritional therapist and certified functional medicine practitioner Nicole Goode, the distinction is particularly important.

“For me, nutritional therapy is clinical nutrition applied to the individual,” she explains. “It goes far beyond simply telling somebody what they should or shouldn’t eat. It is about understanding the person in front of you, their health history, symptoms, diagnoses, lifestyle, medications, nutrient needs and the different factors that may be contributing to how they feel.”

That means looking beyond a standard dietary protocol for a particular condition and instead considering what may be appropriate for the individual.

“That individualisation is probably the most important part of nutritional therapy for me. Two people can arrive with the same diagnosis or symptom, but the journey that brought them there can be completely different. Nutritional therapy gives us the opportunity to ask, ‘why is this happening for this particular person?’ – and then build the support around them.”

Genetics, medical history, medications, sleep, stress, exercise, environment and dietary practices can all influence an individual’s nutritional needs.

Connecting the dots

Symptoms are only part of the picture. This approach also takes a whole-person view of health, recognising that different systems within the body are interconnected and that a combination of factors may influence how someone feels.

Drawing on the principles of functional medicine – an approach that looks at the underlying factors contributing to health and illness – functional nutrition takes a personalised, systems-based approach, looking beyond a diagnosis or list of symptoms to explore how nutrition and different aspects of health may be connected. Digestive health, for example, can influence immune function; hormone balance can affect mood; while chronic stress can have an impact on everything from sleep to blood sugar regulation.

The aim is to connect the dots rather than look at each symptom in isolation. Practitioners may consider what functional medicine describes as antecedents, triggers and mediators – factors that may have increased someone’s susceptibility to a health problem, contributed to its onset or helped keep symptoms going.

Antecedents might include inherited traits or early-life experiences. Triggers could include infections, antibiotic use, trauma or major life events that coincide with the onset of symptoms. Mediators are factors that may help to perpetuate symptoms, such as ongoing gluten exposure in someone with coeliac disease.

Taken together, these different pieces can help practitioners build a broader picture of an individual’s health and consider where nutrition and lifestyle may be able to provide appropriate support.

One diagnosis, different needs

Headaches offer a simple example of why individualisation matters.

“Imagine two people both presenting with recurrent headaches,” Goode says. “The factors contributing to those headaches could still be very different.”

One person might notice a relationship with hormonal changes, while another may regularly skip meals and experience fluctuations in energy. Another person may have inadequate hydration, poor sleep, high stress or a nutritional deficiency.

“They may all describe the same symptom – ‘I keep getting headaches’ – but I wouldn’t necessarily give those people the same nutritional plan.”

Depending on the individual assessment, nutritional support might focus on areas such as meal composition, regular eating patterns, hydration, nutrient intake, sleep or lifestyle factors.

“The same principle becomes even more important when we are working with complex chronic or autoimmune conditions. People may share a diagnosis, but their wider clinical picture, nutritional status, comorbidities, lifestyle and contributing factors can be completely different.”

Goode gives multiple sclerosis as an example of a condition where the clinical picture can be particularly complex. From her perspective, she would want to consider potential underlying factors, such as viral load, heavy metal toxicity, inflammation, mitochondrial function, essential fatty acid levels, vitamin D status, the gut microbiome and hormone balance.

“That is why the diagnosis tells me something about a person, but it never tells me everything I need to know about them,” she says.

Building a clearer picture

The picture often starts to take shape before the first consultation, with clients providing a detailed health and lifestyle history, alongside relevant medical letters and previous test results.  

“The first assessment then goes through their health history in considerable detail, which can take 90-120 minutes for the type of patient I work with,” Goode explains. “I am essentially building a timeline and looking for patterns: what may have predisposed somebody to their current health concerns, what might have triggered a change, and what factors may now be perpetuating it.”

From there, further testing may be considered where it could answer a specific clinical question or influence the approach. “The aim isn’t to test everything; it is to ask the right clinical questions and use testing where it will genuinely help us understand the person better or change what we do.”

This information can then help inform a plan around the individual’s priorities, needs and goals.   

Nutritional therapy and healthcare

Nutritional therapy is intended to support health alongside conventional medical care, rather than replace appropriate medical diagnosis or treatment.

“I feel very strongly that it should never be presented as an either-or,” Goode says.

For people living with complex or chronic health conditions, conventional healthcare may remain essential, including medication, diagnostic investigations, imaging, monitoring and specialist care.

“Nutritional therapy isn’t there to replace that,” she explains. “Equally, there are areas where nutritional therapy can add another layer of support – looking at diet, nutrient status, lifestyle, metabolic health, gut health and other modifiable factors that may influence somebody’s overall health and quality of life.”

For some people, nutritional therapy may be relatively straightforward. For others, it may form one part of a broader healthcare plan alongside medical and specialist treatment.

“Ultimately, it should be about what gives that individual patient the best care, rather than trying to make them choose between different models of healthcare.”

Goode also believes there is scope for greater collaboration between healthcare professions.

“In my own work, particularly because many of my clients are also under consultants, building good professional relationships and being able to work alongside their medical team can be enormously valuable. Greater communication and cross-referral in both directions can only improve patient care.”

Health isn’t about perfection

With nutrition advice increasingly prominent across social media and online platforms, there can be considerable pressure to eat perfectly, eliminate particular foods or take an extensive range of supplements.

But Goode believes this can sometimes distract from the bigger picture – and she doesn’t think that is what good health looks like.

“I wish more people understood that health isn’t created by perfection,” she says. “Nutrition should support your life, not become another source of stress within it.”

At the same time, she says people shouldn’t feel that their concerns are automatically dismissed simply because their test results fall within a conventional reference range.

“I see many people who have been told their blood results are within the normal reference ranges, yet they still feel exhausted, struggle with concentration, experience hair loss or simply know that they don’t feel like themselves.”

That does not mean that everyone should be trying to achieve an idealised set of laboratory results, she stresses. Instead, results need to be considered alongside the person’s symptoms, history, diet, lifestyle and wider clinical picture.

“For me, good nutritional therapy sits somewhere between those two extremes. It isn’t about achieving perfect health or perfect test results; it is about helping somebody function and feel as well as they realistically can.”

The real measure of success

For Goode, some of the most rewarding outcomes are not necessarily found in a blood test or a dietary record, but in the difference those changes can make to someone’s everyday life.

“It is when somebody comes back and tells you what being healthier has allowed them to do again,” she explains.

Goode recalls working with a doctor whose health had deteriorated significantly. At one point, the client was struggling to walk downstairs because of symptoms she associated with arthritis and other health problems.

“Towards the end of our work together, I received a voice note from her while she was on a hiking holiday. She had recorded it from the top of a mountain.”

Those moments, she says, stay with you.

But meaningful improvements do not have to be dramatic.

“I once received a message from the husband of another client just a few weeks after she started working with me. He said, ‘You’ve given me my wife back.’ She had enough energy to take her children to school again, put them to bed and be part of normal family life.”

For Goode, those everyday changes are ultimately what nutritional therapy is about.

“Improving somebody’s health isn’t really about getting a particular marker on a blood test to move or achieving the perfect diet. It is about what that improvement allows them to have back – their energy, independence, family life, career, hobbies or simply the ability to feel like themselves again.

“Being able to play even a small part in giving somebody that back is an enormous privilege.”

Training and professional standards

As interest in nutrition continues to grow, it is increasingly important to understand the training and professional standards behind nutritional advice.

In the UK, nutritional therapy is not a statutorily regulated healthcare profession. However, practitioners can join the Complementary and Natural Healthcare Council (CNHC), whose register is accredited by the Professional Standards Authority. The British Association for Nutrition and Lifestyle Medicine (BANT) represents practitioners working in nutritional therapy and promotes standards for education and professional practice.

For anyone considering nutritional therapy, checking a practitioner’s qualifications, professional registration and scope of practice can help ensure they are working within appropriate professional standards.

A personalised approach to nutrition

Ultimately, nutritional therapy is about seeing the person, not simply the symptom or diagnosis.

It means taking the time to understand someone’s health history, circumstances, nutritional needs and goals, and using a wider lens to inform an individualised, evidence-informed approach.

It is not about perfection or following rigid protocols. Nor is it intended to replace conventional medical care. Instead, it can offer a different perspective to those searching for answers – one that takes the time to look at the individual, connect the dots and consider the factors that may be influencing their health.

For some, that can provide another layer of support and a route towards feeling more like themselves again.