You optimise your training load. You track your recovery. You invest in your nutrition. So when the research points to antioxidants reducing oxidative stress from exercise, supplementing seems like a logical performance lever to pull.

But what if that investment was quietly working against your returns?

This is one of sport nutrition's most counterintuitive findings: in certain situations, high-dose antioxidant supplements can interfere with the very physiological adaptations your training is designed to produce. For athletes focused on long-term gains, understanding this trade-off isn't optional but rather strategic.

The Signal You Don't Want to Silence

Exercise generates reactive oxygen species (ROS). In excessive amounts, ROS cause cellular damage. But at the levels produced during regular training, ROS function as critical signalling molecules. Thes are the biological triggers that tell your body to adapt and grow stronger.

This is hormesis in action: a controlled stressor driving a beneficial response. Specifically, ROS signals initiate mitochondrial biogenesis, boost your body's own antioxidant enzyme production, improve insulin sensitivity, and drive muscle remodelling. These are the fundamental physiological upgrades that separate a trained athlete from an untrained one.

Flood your system with high-dose antioxidant supplements, and you risk silencing those signals and potentially blunting the return on every training session.

Chronic supplementation with approximately 1,000 mg/day of vitamin C and/or 200–400 IU/day of vitamin E has been shown to reduce activation of key pathways involved in mitochondrial development and endogenous antioxidant defences.^[1][2] A 2026 review published in Antioxidants framed this as a redox balance problem: the goal isn't zero oxidative stress, it's the right amount.^[2]

This concern applies specifically to chronic, high-dose supplementation. Context matters: illness, extreme training loads, and specific recovery protocols are different conversations.

The scale of this issue is significant as vitamin C is taken by nearly 60% of athletes^[3] many of whom may be unknowingly compromising their adaptation response.

The Smarter Play: Food First

Dietary antioxidants sidestep this problem. Consumed through whole foods, antioxidants arrive in lower doses alongside other nutrients and phytochemicals that modulate their absorption making interference with training adaptation far less likely.^[2]

Vitamin C from whole foods also plays a critical structural role beyond antioxidant activity — it is essential for collagen synthesis and tendon repair, and enhances iron absorption both critical for athlete health and energy production.

Beyond vitamin C and E, other whole-food antioxidant sources offer targeted recovery benefits: blueberries have demonstrated reductions in exercise-induced muscle soreness and inflammation, while tart cherries support both recovery and sleep quality without the risk of blunting adaptation.

Top 10 Vitamin C–Rich Foods

Per 100g — FSANZ Australian Food Composition Database (AFCD)^[5]

Vitamin E–Rich Foods

Per 100g — FSANZ Australian Food Composition Database (AFCD)^[5]

 The Bottom Line

Stand firm and demand a return on every investment including nutritional ones. Antioxidant-rich whole foods deliver recovery support, structural benefits, and immune resilience without compromising adaptation. Routine high-dose vitamin C or E supplements may do the opposite.

Build your antioxidant strategy around food first. Reserve supplementation for specific, evidence-based applications and let your training deliver the results it was designed to produce.

Runners often train fasted unconsciously as a morning run or gym session before breakfast.

This practice has gained popularity due to its potential effects on fat loss, and overall performance. However, it also comes with its share of pros and cons and is not for everyone. Here's a list of some of the potential pros and cons:

Pros of Training Fasted:

Weight management: Training fasted may increase the body's reliance on using stored fat for energy. Over time this aids fat loss and contributes to the maintenance of lean muscle mass, beneficial body composition and weight management.

Weight management: Reduced body fat contributes to the maintenance of lean muscle mass and beneficial body composition. This can be beneficial for athletes competing in weight categories or sports dependent on body composition such as body sculpting.

Insulin Sensitivity: It can improve insulin sensitivity. When you do eat after exercise, the body absorbs nutrients more efficiently, which is beneficial for overall health and weight management. This assists with blood sugar control, energy levels and management of insulin resistance and diabetes.

Hormonal Responses: Training fasted can lead to increases in human growth hormone (HGH) key to muscle growth. Muscle growth is important to athletes in strength and body sculpting related sports.

Metabolic Adaptation: Proponents will argue that training fasted makes them more efficient at using fat stores for energy. In recent times the belief has gained traction in the endurance running community (especially ultra running).

Cons of Training Fasted:

Performance Impairment: Fasting and then training can lead to decreased performance, especially for high-intensity workouts. Without readily available carbohydrates athletes experience lower energy levels during and post exercise. Recovery, strength, and endurance are also impaired.

A recent review of 46 studies concluded eating before exercise prolongs aerobic performance. The debate becomes clouded in practice as endurance athletes can feel ok during low-to-moderate intensity training when training fasted. A runner can feel good on an easy 6km recovery run but rubbish doing 1km reps.

Muscle Breakdown: Training fasted could potentially lead to increased muscle breakdown due to the lack of readily available energy sources. This is detrimental to muscle gain and repair.

Hydration and Electrolyte Imbalance: Fasting can lead to dehydration and electrolyte imbalances, which can negatively impact workout performance and recovery.

Additional adrenal gland stress: It can increase adrenaline levels and cortisol levels. This is not a great scenario for those athletes with already high levels of stress.

Lower hormones: Reduces male sex hormones (androgens) and negatively impacts libido and metabolic health. This is non-beneficial for men but beneficial for women with polycystic ovarian syndrome (PCOS). Training fasted does not appear to have any effect on estrogen or prolactin levels in women.

Training fasted may also reduce thyroid hormones -thyroid stimulating hormone (TSH) and T3- active thyroid hormones. This may contribute further to thyroid hormone imbalances.

Risk of Overeating Post-Workout: Some individuals compensate by consuming larger meals after exercise. Sugar and carbohydrate cravings increase as the day progresses. Poor food choices and excessive sugar intake peaks towards the end of the day. This can then result in disturbed sleep and reduced energy levels the following day.

Lack of Nutrients for Recovery: After exercise, your body needs nutrients for muscle repair, glycogen replenishment, and overall recovery. Fasted training can limit the availability of these nutrients at a critical time and delay recovery.

Individual Responses: Fasted training might be suitable for some individuals but not for others. Factors like genetics, training goals, and personal preferences can greatly influence the effectiveness and comfort of training fasted.

Increased Perceived Effort: For some athletes, training on an empty stomach can make training sessions feel harder. This can impact motivation and adherence to the training routine.

In summary, training fasted can have potential benefits such as increased fat loss and improved insulin sensitivity. However, training fasted also comes with potential downsides like impaired performance and muscle loss. Athletes are also at risk of reduce hormone levels, dehydration, and nutrient deficiencies with prolonged fasting.

Your training goals, preferences, and how your body responds to fasted training is important to observe. We always recommend seeking professional help from a sports naturopath or nutritionist to ensure training fasted aligns with your specific circumstances.

Sources:

Aird, T. P., Davies, R. W., & Carson, B. P. (2018). Effects of fasted vs fed exercise on performance and post exercise metabolism: A systematic review and meta analysis. Scandinavian journal of medicine & science in sports, 28(5), 1476-1493.

Cienfuegos, S., Corapi, S., Gabel, K., Ezpeleta, M., Kalam, F., Lin, S.,  & Varady, K. A. (2022). Effect of intermittent fasting on reproductive hormone levels in females and males: a review of human trials. Nutrients, 14(11), 2343.

Kim, B. H., Joo, Y., Kim, M. S., Choe, H. K., Tong, Q., & Kwon, O. (2021). Effects of intermittent fasting on the circulating levels and circadian rhythms of hormones. Endocrinology and Metabolism, 36(4), 745-756.

Hackett, D., & Hagstrom, A. D. (2017). Effect of overnight fasted exercise on weight loss and body composition: A systematic review and meta-analysis. Journal of Functional Morphology and Kinesiology, 2(4), 43.

Hansen, D., De Strijcker, D., & Calders, P. (2017). Impact of endurance exercise training in the fasted state on muscle biochemistry and metabolism in healthy subjects: can these effects be of particular clinical benefit to type 2 diabetes mellitus and insulin-resistant patients?. Sports Medicine, 47, 415-428.

Vieira, A. F., Costa, R. R., Macedo, R. C. O., Coconcelli, L., & Kruel, L. F. M. (2016). Effects of aerobic exercise performed in fasted v. fed state on fat and carbohydrate metabolism in adults: a systematic review and meta-analysis. British Journal of Nutrition, 116(7), 1153-1164.

Zouhal, H., Saeidi, A., Salhi, A., Li, H., Essop, M. F., Laher, I.,   & Ben Abderrahman, A. (2020). Exercise training and fasting: current insights. Open access Journal of sports medicine, 1-28.

Want to know more? Contact the Athlete Sanctuary and learn how we can help you to increase health, wellbeing and performance.Â

About the Author: Kate Smyth is a Sports naturopath, nutritionist and female-centric running coach. She is the founder of the Athlete Sanctuary- a holistic healthcare clinic for athletes of all levels and sporting codes. Kate has a thirst for knowledge with two bachelor's and a Master's degree under her belt. She has been involved in sports for many decades and competed for Australia in the Commonwealth Games and Olympic Games marathons with a personal best time of 2 hours 28 minutes.

SEASONAL AFFECTIVE DISORDER

It’s vital for female athletes to recognise the intersection between their mental health and athletic performance, and acknowledge that working on mental health can positively impact their overall performance and condition.

SAD is suggested to be linked to the circadian rhythms (‘body clock’) adjustments at certain times of the year and in response to variations in exposure to sunlight. This is thought to impact the hormones melatonin and serotonin, which affect sleep and mood.

Those most at risk are younger females, those with a family history of depression, bipolar disorder, or SAD. The risk increases the further away from the equator. Vitamin D deficiency is also linked to SAD and people with SAD may produce less Vitamin D. As Vitamin D plays a role in serotonin activity, Vitamin D deficiency and insufficiency have been associated with depressive symptoms.

SAD frequently co-occurs with other disorders including attention-deficit hyperactivity disorder (ADHD), addiction, and eating disorders.

RECOGNISING SEASONAL AFFECTIVE DISORDER

Awareness of Seasonal Patterns
Athletes experiencing SAD may notice seasonal patterns to their moods.

Winter
Common observations over winter include:

• Decline in mood, sadness and depression
• Fatigue without explanation
• Reduced motivation
• Hopelessness
• Social withdrawal
• Overeating and carbohydrate cravings
• Excessive sleeping

Summer
In summer SAD may look more like sleep issues, not feeling hungry, losing weight, and feeling agitated and anxious.

By recognising these patterns and symptoms, athletes can better anticipate and prepare for the potential impact on training and performance.

ADJUSTING TRAINING SCHEDULES

Athletes and coaches may need to modify training schedules to accommodate SAD symptoms. This could mean adjusting the timing of workouts to coincide with optimal sunlight exposure in the middle of the day, incorporating more indoor training during the darker months, or allowing for flexibility in training intensity to accommodate fluctuations in mood and energy levels.

USING SUPPORT NETWORKS AND RESOURCES

Communication
Openly communicate with coaches, supporters, friends and family about your experiences with SAD. By sharing your challenges and seeking understanding, you can foster a supportive environment that promotes positive mental health and helps alleviate the burden of SAD symptoms.

Seek Out a Mental Health Professional
Support from a mental health professional who specialises in sports psychology can be incredibly valuable. These professionals can provide tailored strategies to manage SAD symptoms, including cognitive-behavioural techniques, mindfulness practices and stress management tools.

In some cases your doctor may recommend light therapy.

SELF-CARE AND WELLBEING

Sunlight Exposure
Spend time outdoors during daylight hours, as sunlight exposure has a positive impact on vitamin D levels, sleep, mood and energy levels. Including outdoor activities, such as training sessions, walks and other outdoor hobbies, can help combat the effects of SAD.

Rest and Recovery
Prioritise sufficient sleep and establish consistent sleep routines to support your mental health and physical wellbeing.

Stress Reduction
Implementing stress reduction techniques, such as meditation, deep breathing exercises, or taking time with hobbies and people that bring joy, can help to alleviate SAD symptoms and promote overall mental wellbeing.

Vitamin D
We recommend athletes who suffer from SAD check their vitamin D levels every 6 months. Maintaining regular sunlight exposure and intake of vitamin D rich foods is essential to the prevention of deficiency. In many cases vitamin D supplementation is required.

Managing Seasonal Affective Disorder requires a comprehensive approach that integrates mental health and performance considerations. By recognising the unique challenges you face and implementing strategies such as adjusting training schedules, tapping into support networks and prioritising self-care, you can affectively navigate SAD while maintaining fitness and performance.

About the Author: Kate Smyth is a Sports naturopath, nutritionist and female-centric running coach. She is the founder of the Athlete Sanctuary- a holistic healthcare clinic for athletes of all levels and sporting codes. Kate has a thirst for knowledge with two bachelor’s and a master’s degree under her belt. She has been involved in sports for many decades and competed for Australia in the Commonwealth Games and Olympic Games marathons with a personal best time of 2 hours 28 minutes. For more information visit our website.

References
1. Armstrong, S. L., & McVeigh, D. (2019). A systematic review of athletes’ experiences with self-talk. Frontiers in Psychology, 10, 1518.
2. Fenton, G., McPherson, A., & Kinnafick, F. (2019). Qualitative inquiry into the lived experiences and coping strategies of female athletes with eating disorders. Psychology of Sport and Exercise, 42, 100-108.
3. Gulliver, A., Griffiths, K. M., & Christensen, H. (2012). Perceived barriers and facilitators to mental health help-seeking in young people: A systematic review. BMC Psychiatry, 12.
4. Pargman, D., & Wiese-Bjornstal, D. M. (2003). Examining links between emotional states and physical activity among individuals with high physical activity levels. Journal of Applied Sport Psychology, 15(4), 300-317.
5. Melrose S. Seasonal Affective Disorder(2015): An Overview of Assessment and Treatment Approaches. Depress Res Treat. doi: 10.1155/2015/178564.
6. Murray, G. (2004). How common is seasonal affective disorder in temperate Australia? A comparison of BDI and SPAQ estimates. Journal of affective disorders, 81(1), 23-28.
7. Mayoclinic: SAD Symptoms and Caused
8. Psycom: Seasonal Depression
9. Way Ahead: SAD
10. Health Direct: SAD

Our thymus gland helps regulate the immune system, and is the storage tank for immune cells responsible for eradicating viruses.

The spleen recycles iron, captures and destroys pathogens and initiates the maturation and release of immune cells when the body is required to fight infections.

The lymphatic system is a filtering system removing waste and obsolete immune cells from our entire body through a system of lymph nodes and vessels. Mucous membranes in our respiratory system and gastrointestinal tract, tonsils, and adenoids also contain lymphatic tissue.

Our immune system would not be complete without the gut-associated lymphoid tissue (GALT) – and Peyer's patches in the small intestine.  Nearly 80% of our immunity is actually based in the digestive tract.

A robust immunity has many lines of defence

Our immune system is equipped with a multi-tiered response to battle with foreign invaders 24/7.

The innate immune system includes a  first line of defence which prevents pathogens (germs) from gaining entry into the body. The skin, mucous membranes, gastrointestinal tract and secretions (mucous, vaginal secretions, bile, gastric acid, saliva, tears, and sweat) all play an important role.

The next line of defence houses our infection-fighting cells such as natural killer cells and phagocytes which act like Pac-men against microbial invaders. The immune system also releases antimicrobial proteins such as complement and interferon which interfere with virus replication and cell-to-cell communication.

Our adaptive immune system also keeps a record of every germ it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again.

A balanced whole-foods diet containing real foods rich in antioxidants, vitamins, and minerals can help build robust immunity.

Key vitamins and minerals to boost immunity
Vitamin C

Vitamin C builds resistance to infection and stimulates immune cells and proteins, which help eradicate viruses.

Vitamin C-rich foods include veggies such as red capsicum, broccoli, cabbage, cauliflower, spinach, parsley, and sweet potato. Fruits such as kiwi, berries, pawpaw, pineapple, citrus, guava, broccoli, mango, currants are great sources of vitamin C.  Rosehip, camu camu, and Kakadu plum provide concentrated powdered forms of vitamin C widely available through health food shops. One we recommend is Wild C.

In some circumstances, vitamin C supplementation may be beneficial.  Ingesting vitamin C in divided doses across the day  reduces the risk of gastrointestinal side effects.

Quercetin

Quercetin is a flavonoid reported to have antiviral properties in numerous studies. Vitamin C and quercetin taken together, has a  synergistic antiviral action.

Quercetin is contained in apples, honey, raspberries, strawberries, blackberries, onions, red grapes, cherries, citrus fruits, and green leafy vegetables.

Zinc

Zinc plays a crucial role in supporting immune cell production and modulation of immunity. Common zinc deficiency signs include frequent and prolonged colds, and poor wound healing, acne, dermatitis, low stomach acid, poor smell or taste. White spots on nails may also be a sign of zinc deficiency.

There are many factors that may contribute to zinc deficiency. Inadequate dietary intake, poor absorption, loss through perspiration, and high iron and copper levels can have a detrimental impact on zinc homeostasis.

Foods rich in zinc include oysters, seafood, tahini, peanuts, liver, eggs, nuts, seeds, and legumes. Soaking and sprouting legumes, nuts and seeds helps to break down the phytates that may bind to zinc and reduce zinc’s bio-availability.

Keep in mind there are many other nutrients that support the immune system, however, zinc, vitamin c, and quercetin are key when it comes to fighting viruses.

Gut health

Gut health plays an important role in immunity.

Including prebiotic (skins on vegetables and fruit, psyllium husks, slippery elm, etc.) and probiotic-rich foods (kimchi, sauerkraut, kefir, tempeh, kombucha, miso, and quality yogurt) can improve your immunity. Probiotics can also improve sports performance as discussed on our blog here.

Don't self-sabotage your immunity

Avoid substances that reduce immune system function.

Diets high in saturated fats, sugars, and refined carbohydrates have been shown to contribute to the prevalence of obesity and type 2 diabetes, and increase the risk for severe COVID-19 pathology and mortality. 5 Studies suggest sugar reduces the capacity of white blood cells for up to 5 hours within 1 hour of consumption. Sugar can also feed fungi such as candida which deplete the immune system and increase fatigue.

Caffeine or other stimulants can stress your nervous system, reduce sleep and deplete stores of zinc, and magnesium.  Switching your second coffee for a green tea has been shown to improve innate immunity.

Enjoy alcohol in moderation. Excessive alcohol may also suppress the immune system and increased susceptibility to respiratory pathogens and lung injury.

Avoid chemicals and toxins such as PFAS in cookware, sweat-resistant sportswear and plastics. The health effects of PFAS are considerable, including immune dysruption, increased risk of cardiovascular issues and cancer as we discuss here.

Sleep has an influence on immunity maintenance and immunological response and can increase your risk of picking up infections. Obtain at least 8 hours of sleep every night, ideally hitting the pillow before 10 pm.

Chronic stress depletes the immune system. Focus on what you can control and avoid getting caught up in daily news. Your mindset matters in times of stress and unpredictability. Consider ways of dispelling stress, such as meditation, mindfulness, reading, or creative activities. Don't forget laughter has been shown to improve immunity and mental health.

Keep your exercise balanced and consistent. Regular exercise improves immunity however, excessive exercise of long duration and intensity can make athletes more susceptible to respiratory infections.

If you feel you need to boost your immunity, feel free to contact us and let's discuss how we can help.

References

1.  Carr AC, Maggini S. Vitamin C and Immune Function. (2017) Nutrients. 3;9(11):1211.https://pubmed.ncbi.nlm.nih.gov/29099763/

2. Askari et al., Quercetin- an overview. (2017). Nutrient Delivery https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/quercetin

3. Maywald M, Wessels I, Rink L. Zinc Signals and Immunity. Int J Mol Sci. 2017 Oct 24;18(10):2222. doi: 10.3390/ijms18102222.

4. Skalny AV, Rink L, Ajsuvakova OP, Aschner M, Gritsenko VA, Alekseenko SI, Svistunov AA, Petrakis D, Spandidos DA, Aaseth J, Tsatsakis A, Tinkov AA. Zinc and respiratory tract infections: Perspectives for COVID‑19 (Review). Int J Mol Med. 2020 Jul;46(1):17-26. doi: 10.3892/ijmm.2020.4575.

5. Butler MJ, Barrientos RM. The impact of nutrition on COVID-19 susceptibility and long-term consequences. (2020) Brain Behav Immun. Jul;87:53-54. doi: 10.1016/j.bbi.2020.04.040.

6. Does Sugar Weakn the Immune System? Biotics Research. 2020. www.blog.bioticsresearch.com

7. Chowdhury P, Barooah AK. Tea Bioactive Modulate Innate Immunity: In Perception to COVID-19 Pandemic. Front Immunol. 2020 Oct 28;11:590716. doi: 10.3389/fimmu.2020.590716.

8. Yeligar SM, Chen MM, Kovacs EJ, Sisson JH, Burnham EL, Brown LA. Alcohol and lung injury and immunity. Alcohol. 2016 Sep;55:51-59. doi: 10.1016/j.alcohol.2016.08.005

9. Silva ESME, Ono BHVS, Souza JC. Sleep and immunity in times of COVID-19. Rev Assoc Med Bras (1992). 2020 Sep 21;66Suppl 2(Suppl 2):143-147. doi: 10.1590/1806-9282.66.S2.143.

10. Dhabhar FS. Effects of stress on immune function: the good, the bad, and the beautiful. Immunol Res. 2014 May;58(2-3):193-210. doi: 10.1007/s12026-014-8517-0.

11. Yim J. Therapeutic Benefits of Laughter in Mental Health: A Theoretical Review. Tohoku J Exp Med. 2016 Jul;239(3):243-9. doi: 10.1620/tjem.239.243

12. Cerqueira É, Marinho DA, Neiva HP, Lourenço O. Inflammatory Effects of High and Moderate Intensity Exercise-A Systematic Review. Front Physiol. 2020 Jan 9;10:1550. doi: 10.3389/fphys.2019.01550

Mineral testing provides a wider perspective on an individual’s overall health status than just urine, blood or stool pathology testing alone although it is always useful to use both tests in conjunction with each other. Mineral testing can be used as an early detector of subclinical issues and provide useful guidelines in terms of how to best support the body when annoying symptoms such as fatigue, insomnia and digestion issues persist.

In clinical practice, test results are always accompanied by a thorough assessment of your overall health and nutritional intake to provide meaningful context to data and to give you a clear understanding of where and how deficits may be occurring.

A mineral analysis may provide insight into your current health status, identify potential areas of concern and provide suggestions around dietary and supplemental measures that may improve your health now and prevent issues in the future.

Mineral testing for athletes- useful insights

Mineral testing provides a snapshot of how the body is utilizing the nutrients obtained from your food and provides an analysis of 13 key minerals. Trends in nutrient deficiencies or excessive mineral levels may indicate poor activation and non-beneficial storage of nutrients.

To demonstrate this point, let’s take a look at calcium. Calcium will be maintained within a very narrow range in blood serum due to its life-supporting roles in managing heart rate, nerves, and muscle function. However, in a mineral analysis high or levels of calcium may be observed.  Low levels of calcium may indicate poor absorption, inadequate intake or other nutrient issues such as low vitamin D, while high levels may be suggestive of low vitamin B6 and poor calcium utilisation in the body.

High calcium levels may also contribute to underactive thyroid issues with symptoms such as weight gain, fatigue, low blood pressure and poor mood. Early detection of calcium issues is vital for the prevention of bone issues such as osteopenia, fractures, bone spurs, kidney stones and thyroid issues.

Mineral testing for athletes provides an analysis of how the body is utilizing 13 key nutrients obtained from the athlete's diet. Longer-term patterns in nutrient deficiencies or excesses may indicate poor activation and non-beneficial storage of nutrients.

To demonstrate this point, let’s take a look at calcium. Calcium will be maintained within a very narrow range in blood serum due to its life supporting roles in managing heart rate, nerves, and muscle function. However, in a mineral analysis high or levels of calcium may be observed.  Low levels of calcium in mineral testing for athletes, may indicate poor absorption, inadequate intake or other nutrient issues such as low vitamin D. High levels in mineral testing for athletes, may be suggestive of low vitamin B6 and poor calcium utilisation in the body.

High calcium levels may also contribute to underactive thyroid issues with symptoms such as weight gain, fatigue, low blood pressure and poor mood. Early detection of calcium issues is vital for the prevention of bone issues such as osteopenia, fractures, bone spurs, kidney stones and thyroid issues.

Significance of mineral testing for athletes

A clinical understanding of how an individual metabolises and utilises nutrients can be obtained through various mineral ratios included in a mineral test.  Just some of the ratios contained in the mineral analysis report are outlined below:

Immunity: Low zinc in relation to high copper levels may indicate a susceptibility to viral infections such as colds, cold sore outbreaks or poor wound healing. Zinc is critical to immune cell function and digestion and hydrochloric acid. Reduced digestive function and symptoms such as bloating, diarrhoea, malabsorption and low nutrient levels may also be observed in patients with low zinc.

Iron deficiency and anaemia: As discussed previously in relation to immunity, ceruloplasmin is a protein carrier shared by zinc, copper and iron. If zinc, copper or iron are too high, they may inhibit the absorption of the other minerals. For example -high levels of copper may be observed in women taking the oral contraceptive pill or through drinking water carried in copper pipes.  High copper levels may contribute to iron deficiency anaemia and present as shortness of breath, lethargy, dizziness and exercise fatigue.

Poor liver detoxification: Molybdenum is a key nutrient required for liver detoxification and is frequently low on test results due to reduced intake of foods rich in molybdenum such as legumes. When molybdenum is low in relation to sulfur an individual may experience sluggishness, fatigue, skin issues, and poor recovery related to reduced sulfation detoxification pathways in the liver.

Blood sugar control issues: Manganese and chromium are key nutrients required for blood sugar control. When manganese is low in relation to chromium an individual may experience energy dips, especially after meals, sugar cravings and dizziness or sweating related to poor blood sugar control and fluctuating insulin levels.

Hormone issues: Minerals play a key role in hormone modulation. When iron is low in relation to copper, individuals may complain of fatigue, poor recovery, weakness, loss of libido, irregular periods and hot flushes due to a pattern of low progesterone or testosterone.

Adrenal gland insufficiency: During times of stress, the adrenal gland utilises larger amounts of sodium and magnesium. When sodium levels are low in comparison to magnesium the adrenal gland may be underperforming as it is highly sodium dependent to produce key hormones such as cortisol.

General muscle tightness: Calcium and magnesium are required for bone health and muscle and nerve function. Stiff muscles, bladder issues and immobile joints may present when there is an issue between the ratio of calcium and magnesium in the body.

HEAVY METAL BURDEN
This form of testing may also identify heavy metal burden on the body. Despite a clean lifestyle, individuals can present with unfavourable levels of mercury, arsenic, lead, tin or aluminium largely due to living in a modern environment where exposure to heavy metals occurs on a regular basis.

Contrary to popular belief, heavy metal accumulation does not necessarily occur from occupational exposure. Frequent exposure arises from pesticides; additives and the tinning of foods; dental fillings; drinking water; products and materials used in homes and offices; personal care products and cosmetics.

Heavy metals are neurotoxins and may over time contribute to a plethora of health issues such as thyroid, reproductive and mental health issues, and cancers. Heavy metals displace other key minerals such as zinc, selenium and iron. The presence of these metals may also be indicative of other functional issues such as reduced liver detoxification pathways.

Practicalities of mineral testing for athletes

Mineral testing looks at long-term trends (over 2-3 months) and can be very useful when symptoms or health issues are ongoing and underlying contributing factors are yet to be identified.  Athletes also find mineral balance results useful before they launch a new training campaign as a measure of nutritional status and as a preventative measure against deficiencies that may inhibit performance.

Mineral testing does not require a blood draw and can be conducted in the privacy of your own home.  Test results generally take 2 weeks and are reviewed during an extended consultation.

For further information or to order a test kit email contact us or book in for your initial consultation.