Let's be honest, copper is not exactly the mineral everyone is talking about. But maybe it should be. While iron, magnesium and zinc tend to hog the spotlight, copper is quietly doing some seriously important work in the background. For active women especially, getting enough of this trace mineral can make a real difference to how you feel, move and recover. Here are the five benefits worth knowing about.

1. It Helps Your Body Actually Use Iron

This one is a game-changer. Copper produces an enzyme called ceruloplasmin, which converts iron into the form your body can transport through the bloodstream and use to make red blood cells.¹ No copper, no iron transport, it really is that simple.

So if you have been diligently supplementing iron but your ferritin is still stubbornly low, copper could be the missing piece. Up to 35% of active women experience some form of iron deficiency,² and copper-iron dysregulation may be quietly contributing to many of those cases. Worth checking!

2. It Powers Your Energy From the Inside Out

Feeling flat even when you are sleeping well and eating right? Copper plays a direct role in ATP production, the energy your mitochondria generate to fuel every workout and every busy day.³ Without enough copper, your cellular energy engine simply does not run as efficiently as it should.

Consider it like a mechanic keeping your engine tuned. You will not necessarily feel copper working, but you will notice when it is missing.

3. It Supports Hormonal Health

Here is the link that often gets overlooked. Copper influences the balance between oestrogen and progesterone, and high oestrogen levels. Elevated copper in the body can occur from the oral contraceptive pill, perimenopause fluctuations or oestrogen dominance.⁴ Conversely, low copper has been associated with thyroid disruption and poor adrenal resilience.

For active women navigating hormonal shifts or managing symptoms like mood changes, irregular cycles or low libido, getting copper tested alongside a full hormone panel is a smart move.

4. It Keeps Your Joints and Connective Tissue Strong

If you run, lift or train regularly, your tendons, ligaments and joints take a beating. Copper activates an enzyme called lysyl oxidase, which supports the structural proteins responsible for building and maintaining strong collagen, elastin and wound healing.³

Low copper means weaker connective tissue, which can show up as niggling injuries, poor joint stability or slower recovery from training loads. Think of copper as your body's internal scaffolding crew.

5. It Speeds Up Recovery and Fights Inflammation

Hard training creates oxidative stress — essentially, free radicals that damage cells and slow recovery. Copper activates superoxide dismutase (SOD), one of the body's most powerful antioxidant enzymes, which neutralises these free radicals before they cause lasting damage.⁵

Research in athletes has shown that trace element status, including copper, is directly associated with oxidative stress markers and recovery capacity.⁵ Less oxidative damage means less soreness, faster repair and better adaptation to training over time.

So How Much Do You Need?

The Australian RDI for copper in adult women is 1.2 mg/day,⁶ which most women can meet through a varied whole-food diet. Top sources include oysters, beef liver, cashews, sunflower seeds, dark chocolate and lentils. Our apricot bliss balls are a great copper rich snack!

If you are taking high-dose zinc (which competes with copper for absorption), supplementing iron without improvement, or on the pill, it is worth asking your practitioner to check your serum copper and ceruloplasmin levels alongside your next blood test.^1,4

Small mineral, big impact. Do not overlook it.

Sleep plays an important role not only in recovery, but also in regulating the menstrual cycle. If we rule out pregnancy, active females, can have many factors collectively contributing to lighter or irregular menstraul cycles, all of which are important to understand but also address. Let's recap some of the most common issues that contribute to lighter or delayed periods.

Why Periods May Stop or Become Irregular

High exercise volume or intensity. When training volume or intensity increases, the body may shift priorities and redirect energy away from reproduction and toward survival and performance. In simple terms, the brain tells the ovaries to take a break and periods can become irregular, delayed, or stop altogether. A recent systematic review found that approximately 32.3% of female athletes are impacted in this way.

Nutritional factors. Low energy availability (not eating enough to match output) and restrictive eating are the most common nutritional issues which impact the cycle.  When calorie intake does not match the high energy expenditure of training, the body conserves fuel by slowing reproductive function, and hormones such as oestrogen and progesterone start to decline. While many women boast a quality nutritional profile on the surface, the calorie intake or density can still be insufficient to match the demands of the individual.

Skipping snacks or having lighter meals can easily tip athletes into the red. Prolonged energy depletion can lead to issues such as Relative Energy Deficiency in Sport. Athletes with or without an eating disorder may choose to restrict food intake during a determined window to make weight or enhance performance for a key event. This can impact body fat, hormone signalling and extend the cycle, lighten cycles or stop them altogether.

Emotional stress and anxiety

Emotional stress, travel, competition anxiety, or personal challenges can elevate cortisol and disrupt the hypothalamic-pituitary-ovarian (HPO) axis. The pressure to perform, coupled with life stressors, can compound physical strain, further suppressing hormones that regulate menstruation. Stress of any kind raises cortisol, directly suppresses the HPO axis, and reduces hormones such as progesterone, leading to missed cycles and functional hypothalamic amenorrhea. A condition where the brain suppresses reproductive function due to perceived stress or energy deficiency.

Low Iron

Iron deficiency can indirectly contribute to lighter cycles. Iron deficiency elevates cortisol and inflammatory markers and has effects on the HPO axis as explained above. Estrogen levels may then drop, especially if iron deficiency is paired with low energy availability. The cycle can then start to pitter out. Energy production can also be impacted despite meeting calorie needs.

Poor sleep and recovery habits

Sleep is when the body recalibrates its hormonal systems. During deep sleep, the HPO axis relies on stable circadian rhythms to regulate the release of gonadotropin-releasing hormone (GnRH). This hormone triggers the production of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are essential for ovulation and menstrual regularity.

When sleep is fragmented or insufficient, cortisol levels rise, melatonin drops, and GnRH pulsatility becomes irregular, disrupting circadian rhythm and impairing ovulation. This vicious cycle contributes to irregular cycles. Poor recovery from poor sleep also dysrupts the HPO axis and cases light or missed periods.

This feedback loop can persist unless addressed through improved sleep hygiene, balanced nutrition, and structured recovery strategies.

Why It Matters

Menstrual irregularities are not just about missed periods. They can affect bone density, cardiovascular health, mood, and fertility. For sportswomen, understanding this connection is empowering. It allows for proactive choices such as adjusting training, improving nutrition, and seeking guidance when needed.

A delayed period is useful feedback. It is the body’s way of saying, “I need more care.” By listening, adjusting, and supporting our hormones, we create space for both strength and sustainability.

At Athlete Sanctuary, we believe that performance and health are not opposing forces. They are partners. If you would like to improve your report card, we are here to help.

Benefits of nondigestible fermentable carbohydrates in sports nutrition and gut health

The fermentation of nondigestible carbohydrates leads to several health benefits:

• Enhanced Digestion: SCFAs, such as butyrate, fuel the cells lining the colon, promoting efficient nutrient absorption and a robust gut barrier.
• Balanced Microbiome: Feeding beneficial bacteria helps maintain diversity, stability and a harmonious gut environment, preventing the overgrowth of harmful microbes.
• Reduced Inflammation: SCFAs possess anti-inflammatory properties, which can alleviate symptoms of gastrointestinal disorders such as irritable bowel syndrome (IBS), affecting 30% of the Australian population.
• Reduce symptoms: Fibre can significantly reduce gastrointestinal distress, such as constipation and bloating. Athletes often subject their bodies to intense physical stress, which can inadvertently impact gut health. High-protein diets, common among athletes, may alter gut microbiota composition, leading to increased production of proteolytic metabolites. This shift can exacerbate gastrointestinal distress during exercise, potentially impairing performance and recovery. Incorporating nondigestible fermentable carbohydrates can counteract these effects by fostering a more favourable gut environment.
• Enhanced mineral absorption. Undigestible carbohydrates, such as inulin and mannitol, can improve the absorption and bioavailability of essential minerals, including magnesium, calcium, zinc and iron.

Incorporating Beneficial Carbohydrates into Your Diet

To harness the gut health benefits of nondigestible fermentable carbohydrates, consider the following dietary additions:

• Whole Grains: Oats, quinoa, and brown rice are rich in dietary fibre.
• Legumes: Chickpeas, lentils, and beans provide substantial fibre and resistant starch, supporting gut bacteria.
• Fruits and Vegetables: Bananas, asparagus, and garlic contain inulin and other prebiotic fibres. Inulin is also found in chicory root, Jerusalem artichoke, onion, leeks, burdock root, wheat and wheat bran. Mannitol is in mushrooms, cauliflower, celery, snow peas, butternut squash, sweet potato, apples, watermelon, cabbage, pumpkin, Brussels sprouts and peaches.
• Psyllium husk can be taken with water for added fibre.
• Resistant Starch-Rich Foods: Cooling cooked starchy foods like potatoes and rice increases their resistant starch content, therefore benefiting gut health.

Practical Tips

• Gradual Introduction: Slowly increase fibre intake to allow your gut to adapt, minimising potential discomfort. Research suggests that 30 grams of fibre daily is recommended to provide gut health benefits.
• Stay Hydrated: Adequate water consumption aids in the digestion and fermentation of fibres.

Vegetarian and vegan athletes are at greater risk of anaemia due to reduced intake of animal products containing iron and B12.

It is important to remember there are two different forms of dietary iron.

Heme iron is found in animal meats such as liver, lamb, beef and kangaroo.
Non-heme iron is derived from plant sources such as legumes, dried fruits, nuts and leafy green vegetables, tofu and eggs.

Heme- iron is the more readily absorbed form of iron. Eggs and many plant foods also contain non-heme iron, but have reduced bio-availability compared to meat sources. Vegetarians and non-meat eaters need to be mindful to consume adequate amounts of non-heme iron along with foods that enhance iron absorption

The key to maintaining iron adequacy is to consume non- heme rich foods at every meal and load your diet with healthy wholefood plant sources that are packed in all the co-factors such as vitamin C, bioflavonoids and folate. These co-factors help extract and absorb iron at every opportunity throughout the day. Avoidance of foods that contain nutrients which inhibit iron absorption is even more important for vegetarians and vegans as they have less room to move.

Iron absorption will be decreased by up to 60% if you have tannin-containing drinks or foods such as teas, coffee, red wine, peppermint tea and chocolate within two hours of an iron-rich meal.

This doesn’t mean you have to go completely without your treats, it just means you are best to have them in moderate amounts and avoid having them at the same time.

Mother nature also provides a reminder of blood-building foods in red-coloured plant foods. Beetroot, rhubarb, berries, dried figs and plums all contain iron.

Vegetarian Meal Plan

Breakfast: scrambled eggs (2), ½ cup spinach (cooked) plus 1 grilled tomato and 2 slices wholemeal toast with butter.  Include a large glass of freshly squeezed orange, parsley and kiwi juice.

Morning tea: 50g dried apricots plus 50g activated almonds

Lunch: cooked lentils (1 cup) with 1/2 cup quinoa, ½ cup fresh tomato added at last minute, 1 cup salad greens including capsicum, grated carrot, shredded cabbage and 1 tablespoon of tahini dressing

Afternoon tea: 1 bowl of Beet Berry smoothie bowl with coconut and cereal topping. For other great snack ideas see our Healthy Snacks for Busy Athletes or Iron Rich Snacks e-recipe books.

Dinner: 1 cup grilled tempeh (fermented tofu) with 1/2 cup steamed broccoli, 1/2 cup baked pumpkin and 1 beetroot with lemon, parsley and olive oil dressing

About the Author:

Kate Smyth provides sports naturopathy and nutrition advice and is a female-centric running coach. She founded the Athlete Sanctuary- a holistic healthcare clinic for athletes of all levels and sporting codes. She has been involved in sports for many decades and competed for Australia in the Commonwealth Games and Olympic Games marathons.

Iron is also needed for protein metabolism, collagen and antioxidant synthesis, as a co-factor for key enzymes involved in energy production, muscles, DNA and hormone synthesis; and immune function. Iron plays a key role in forming hemoglobin in red blood cells. Haemoglobin is necessary for the transportation of oxygen around the body and is critical to athletic performance.

If left untreated, iron deficiency and anaemia may contribute to decreased endurance; reduced training capacity and recovery lead to more frequent colds and other infections.

Why athletes have an increased risk of iron deficiency or anaemia

• Greater iron utilisation and requirements of iron
• Inflammation reduces the body's ability to store iron,
• Gastrointestinal tract stress limiting the absorption of iron through nutrition and blood loss,
• Loss of iron through sweat 
• Haemolytic breakdown of red blood cells through footstrike
• Blood loss may also occur through urine 
• Insufficient intake of iron-rich foods  and more plant-based foods
• Heavy periods in female athletes

In the general population, anaemia most commonly results from nutrient deficiencies due to low intake of iron-rich foods and blood loss, such as with heavy periods, haemorrhoids or gastric ulcers. Surgery, eating disorders, exposure to viruses (e.g. Malaria), toxins (e.g. lead) or renal disease, and some drugs reduce iron absorption. Low stomach acid, diarrhoea, Coeliac’s and Crohn’s disease and gastric bypass also decrease iron absorption. Increased requirements, such as in pregnancy, can also lead to deficiencies.

Iron is found in plants and animal meats
It is important to remember there are two different forms of dietary iron.

Heme iron is found in animal meats such as liver, lamb, beef and kangaroo.
Non-heme iron is derived from plant sources such as legumes, dried fruits, nuts and leafy green vegetables, tofu and eggs.

As the body must change the structure of the non-heme iron before it can be absorbed, heme iron from animal products is more bioavailable for the body. This doesn’t mean a vegetarian will always be low in iron, it just means they need to be smart about where they get their iron, and ensuring they include high amounts of other nutrients that aid absorption of iron.

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TOP 10 TIPS - To increase your iron absorption

*Consume foods high in vitamin C such as capsicum, berries, citrus and guava and malic acid-rich foods such as watermelon, berries, kiwi, apricots and mango in the same meal to enhance non-heme iron absorption. Don't forget nature's wonders, such as parsley and beetroot, which are also great blood builders.

*Eat fresh wholefoods. Consume 2 serves of fruits mentioned above per day plus 5-7 serves of vegetables and 2-3 serves of wholegrains per day. These foods provide nutrients that aid iron metabolism such as copper, vitamin A, vitamin B2, B12, folic acid, molybdenum, selenium and amino acids.

*Eat red meat, fish or chicken with vegetables. Consuming meat at the same time as plant-based sources of iron can enhance the non-heme absorption from plants by 85%. Consume a palm-size portion of iron-rich foods 4-5 times per week to maintain iron levels.

*Cook your iron-rich vegetables. Cooking plant-based iron foods such as spinach may improve iron bioavailability.

*Improve your digestion and boost your hydrochloric acid levels by drinking freshly squeezed lemon juice or apple cider vinegar in water 15 minutes before meals so you break down foods efficiently.

*Use pots and pans made from iron while cooking.

*Separate iron from calcium-rich foods. Consume foods containing substances that inhibit iron at least 2 hours away from an iron-rich meal or iron supplements. Calcium, oxalic acid, tannins and phytate-containing foods may all reduce iron absorption when consumed together.

• • Calcium-rich foods such as cow’s milk, cheese, yogurt and calcium supplements.
  • Oxalic acid s can be found in chocolate, tea, uncooked spinach and chard.
  • Tannins can be found in coffee, cocao, red wine, peppermint tea, and cranberries.

*Include iron-rich snacks and recipes like the ones we prepared for you in our Iron Rich Snacks e-recipe book.

*Soak, sprout, ferment and cook (where appropriate) foods containing phytic acid found in legumes (beans, lentils, chickpeas) and other wholegrains, nuts and seeds to limit phytates' effect on reducing iron absorption.

*Be aware of drugs such as antacids like Mylanta, antibiotics, and aspirin, which decrease iron absorption: separate iron supplements and iron rich foods from medications.

*Avoid self-prescribing supplements as too much iron can be toxic! See your naturopath for testing, advice on your iron status, and the quantity and best form of iron to take.

About the Author:

Kate Smyth provides sports naturopathy and nutrition advice and is a female-centric running coach. She founded the Athlete Sanctuary- a holistic healthcare clinic for athletes of all levels and sporting codes. She has been involved in sports for many decades and competed for Australia in the Commonwealth Games and Olympic Games marathons.