The same symptoms can have many different causes, which is why we don't assume a deficiency based on how you feel alone. Where appropriate, blood testing can help identify nutritional deficiencies, thyroid abnormalities, blood sugar changes and other health markers that may warrant further investigation or support.
Explore the symptoms below to learn more about potential contributing factors and how nutritional testing may help build a clearer picture of your health.
Feeling tired, drained or lacking your usual energy?
Fatigue can leave you feeling physically and mentally exhausted, even after a full night's sleep, and can affect your motivation, concentration and everyday activities.
Sometimes there is no obvious reason for feeling tired, but persistent fatigue can sometimes be associated with low iron/ferritin, vitamin B12, folate, vitamin D or magnesium. It can also be associated with an underactive thyroid, blood sugar problems or other health conditions.
Looking beyond nutrition can also be important. Kidney and liver function play key roles in maintaining the body's internal balance, processing waste and supporting normal metabolism, so changes in these areas can sometimes be associated with tiredness and low energy.
Our testing can help assess relevant vitamin, mineral and health markers to build a clearer picture of your nutritional health and identify whether there are any areas that need further investigation or support.
Feeling mentally cloudy, forgetful or less focused than usual?
Brain fog can make it harder to concentrate, remember things or find the right words. There are many possible causes. Difficulty concentrating or feeling mentally foggy can sometimes be associated with low B12, folate, iron, vitamin D or magnesium.
Thyroid dysfunction, poor sleep, stress and blood sugar fluctuations can also contribute.
If brain fog is becoming part of a regular pattern, looking at the wider picture can be useful. Our testing can help assess relevant nutritional markers and identify whether further investigation or support may be appropriate.
Feeling more low, irritable or anxious?
Changes in mood can have many different causes, including stress, poor sleep, hormones, lifestyle changes and wider mental or physical health factors.
Nutritional factors may also play a role. Low B12, folate and vitamin D can sometimes be associated with changes in mood, energy and overall wellbeing. Thyroid function can also influence mood, particularly when thyroid levels are outside the normal range.
Our testing can help assess relevant vitamin, mineral and thyroid markers and identify whether nutritional or other health factors are worth investigating.
Struggling to fall asleep or waking up throughout the night? Or are you waking up without feeling fully rested?
Poor sleep can affect far more than just your energy levels. It influences concentration, mood, appetite, your immune health and how you feel throughout the day.
Sleep problems are multifactorial, but nutritional status, stress, lifestyle and hormonal health can all play a role. Low magnesium, vitamin D and iron may be relevant in some individuals.
Blood sugar regulation may also be relevant. Changes in blood glucose can contribute to disrupted sleep, thirst or waking up during the night.
If sleep problems are ongoing, looking at the wider picture can be useful. Our testing can help identify nutritional health markers, alongside your symptoms and lifestyle, to help you build a more personalised approach to your health.
Noticing more hair in your brush, shower or on your pillow? Or are you feeling as though your hair is becoming thinner?
Hair changes can sometimes be associated with low iron/ferritin, vitamin D, zinc, B12 or folate. Thyroid dysfunction can also affect hair growth and shedding.
Biotin, also known as vitamin B7, is a water-soluble B vitamin that helps maintain normal hair and nails. Biotin injections can provide biotin directly into the body and may be considered when supplementation is appropriate.
Our testing can help assess relevant vitamin, mineral and thyroid markers and identify whether nutritional or other health factors are worth investigating.
Are your nails splitting, peeling or breaking? Or perhaps they're struggling to grow as strong as they used to?
Changes in nail strength can sometimes reflect nutritional status. Weak or brittle nails can sometimes be associated with low iron/ferritin, zinc, B12 or folate.
Thyroid problems can also be worth considering, particularly when nail changes occur alongside fatigue, hair changes or feeling cold.
Our testing can help assess relevant vitamin, mineral and thyroid markers and identify whether nutritional support or further investigation may be appropriate.
Experiencing frequent muscle aches, unexplained pain, stiffness, cramps or twitching?
These symptoms can have many causes, from exercise and hydration to nutritional status, hormones and other health conditions.
Vitamin D, magnesium and calcium play important roles in normal muscle and nerve function. Low levels may contribute to muscle cramps, weakness or discomfort in some people. Iron and vitamin B12 can also be relevant where muscle symptoms occur alongside fatigue or other symptoms.
Thyroid function can also affect muscles, with an underactive thyroid sometimes associated with aches, stiffness or weakness.
Our testing can help assess relevant nutritional and other health markers to identify whether these factors may be worth investigating further.
Experiencing ongoing joint discomfort, stiffness and aches, or concerned about maintaining strong and healthy bones?
Bone and joint health are influenced by a combination of nutrition, movement, hormones, age and overall health.
Vitamin D and calcium are particularly important in maintaining normal bones, while magnesium contributes to normal bone health and muscle function. Vitamin D deficiency can be associated with muscle aches and weakness, which may sometimes be experienced alongside joint or bone discomfort.
Vitamin D helps the body absorb calcium and is essential for maintaining healthy bones, while calcium is needed for normal muscle contraction and bone strength.
Nutritional status isn't the only factor to consider. Thyroid and parathyroid function play an important role in regulating calcium and bone metabolism, while markers such as uric acid or other inflammatory markers may be relevant depending on your symptoms.
Our testing can help assess relevant vitamin, mineral and health markers and identify whether nutritional support or further investigation may be appropriate.
Experiencing bloating, abdominal discomfort, changes in bowel habits or other ongoing digestive symptoms?
Digestive symptoms can have many possible causes, from diet and food intolerances to IBS, gut conditions and problems with nutrient absorption.
IBS, also known as irritable bowel syndrome, can cause symptoms such as bloating, abdominal pain, diarrhoea and constipation, but similar symptoms can occur with other digestive conditions too.
Looking beyond the symptoms themselves can help identify whether there are other factors worth investigating. Coeliac disease can damage the small intestine and interfere with nutrient absorption, potentially contributing to deficiencies such as iron, B12, folate, vitamin D, calcium and zinc. Other nutritional deficiencies can also sometimes occur when digestion or absorption is affected.
Persistent digestive symptoms may therefore be worth investigating alongside relevant blood markers. Our testing can help assess nutritional status, including iron and vitamin and mineral levels, and identify whether nutritional support or further investigation may be required.
If coeliac disease is being investigated, testing should be discussed before starting a gluten-free diet, as avoiding gluten can affect the accuracy of the coeliac blood test.
Noticing changes in your weight without an obvious explanation?
Weight changes are influenced by many factors, including diet, activity, sleep, stress and hormones.
An underactive thyroid can contribute to weight gain, while blood sugar regulation and insulin resistance may also be relevant. Unintentional weight loss can have many causes, including changes in blood sugar associated with diabetes, thyroid dysfunction, digestive conditions such as coeliac disease and other medical conditions.
Persistent unexplained weight loss should be medically assessed.
Our testing can help assess relevant vitamin, mineral and health markers and identify whether further investigation or support may be appropriate.
Do you feel like you're constantly coming down with something — a runny nose, a sore throat, swollen glands, or feeling tired and generally under the weather? Or do you find it takes you longer than expected to recover from illness, exercise or everyday demands?
Your immune system and ability to recover rely on a combination of adequate nutrition, sleep, stress management and overall health.
Adequate zinc, vitamin D, vitamin C, iron and B12 are important for normal immune function and energy metabolism. Low levels may therefore be worth considering, particularly if you are also experiencing fatigue, low mood, poor concentration or changes to your diet.
Our testing can help assess relevant vitamin, mineral and health markers and identify whether nutritional support or further investigation may be appropriate.
Experiencing recurring mouth ulcers, an inflamed or sore tongue, or other ongoing oral symptoms?
Recurring mouth ulcers or a sore tongue can have many possible causes, including stress, hormonal changes, irritation or underlying digestive conditions.
These symptoms can sometimes be associated with low iron, B12 or folate, which are important for healthy red blood cell production and the maintenance of normal cells and tissues.
Coeliac disease, for example, can affect nutrient absorption and may contribute to deficiencies in iron, B12 and folate.
Our testing can help assess relevant vitamin, mineral and health markers and identify whether a nutritional deficiency or another factor may be worth investigating.
Experiencing pins and needles, numbness, weakness or changes in sensation?
These symptoms can have many different causes, but nutritional factors can sometimes play a role.
Vitamin B12 is particularly important for the normal functioning of the nervous system, and a deficiency can cause symptoms such as pins and needles, numbness, weakness or changes in sensation.
Low folate, vitamin B6, vitamin D and magnesium may also be relevant in certain circumstances, although symptoms are not specific to nutritional deficiencies.
Blood sugar regulation, including diabetes, can also affect nerves. Persistent or unexplained neurological symptoms should be medically assessed, and HbA1c may be relevant depending on symptoms.
Rather than assuming what's behind your symptoms, our testing can help build a clearer picture of your nutritional health and identify whether there are any areas that need further investigation or support.
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