Is Your Healthy Diet Too Low in Nutrients?

Why eating “clean” isn’t always enough — and how hidden deficiencies may be draining your energy, hormones, and mood

You’re eating a healthy, balanced diet using fresh ingredients and a wide variety of vegetables. You’ve ditched the white bread, processed foods and unhealthy snacks, yet you’re still not feeling great. If you can relate to this, this blog is for you! 

You may have even finally cut out sugar, gone gluten-free, or added smoothies and superfoods to your diet, yet you’re still tired, your hair seems thinner, your sleep isn’t as restful, and your skin has lost its glow. 

This is not what was promised by a “clean” diet! You don’t feel as vibrant or as well as you expected to. What’s going wrong?

Let me begin by saying – you’re not alone! This is a common theme among the women I coach, especially as they move through their 40s. And many of them are health-conscious and often highly disciplined when it comes to their diets and routines. 

What most don’t realise is that beneath the surface, they’re undernourished. Not in calories, but in micronutrients. And no amount of willpower or discipline can replace what the body simply isn’t getting.

Why Nutrient Deficiencies Are More Common Than You Think

The truth is, no one thing causes this. It can be a mix of food not being as nutritious as it once was, our lifestyle choices, and changes due to ageing, resulting in even the healthiest of diets falling short of what we need. Here are some of the possible reasons:

• Soil depletion: Modern farming practices have stripped the soil of minerals, meaning our vegetables don’t contain nearly as many of the nutrients they once did.
• Long-term stress: Chronically elevated cortisol burns through B vitamins, magnesium, vitamin C, and zinc quickly.
• Digestive issues: Bloating, reflux, IBS, or low stomach acid can all impair nutrient absorption, even if your diet is rich in nutrients.
• Hormonal shifts after 40: Oestrogen influences how we absorb and utilise nutrients like calcium, magnesium, and vitamin D. As it declines, so does efficiency.
• Restrictive eating habits: Even well-intentioned “healthy” diets can become limited over time. When we exclude entire food groups, over time, it can lead to silent deficiencies.

Common Signs Your Healthy Diet May Be Too Low in Nutrients

If you are feeling a mixture of the following, it’s time to readdress your diet.

• Constant fatigue or low energy, even with adequate sleep.
• Weak nails, hair loss, dry skin.
• Poor recovery after exercise or frequent muscle cramps.
• Anxiety, irritability, or low mood.
• Brain fog or difficulty concentrating.
• Sugar or salt cravings.
• Slow metabolism despite eating well.
• Feeling hungry shortly after meals.

If any of these symptoms sound familiar, your body may be quietly telling you it needs more, not less, and that “clean eating” alone isn’t enough.

Most common nutrient deficiencies in women over 40

Here are the top nutrients I find women in their 40s and 50s are often low in, and what you can do about it.

1. Magnesium 

Supports sleep, stress regulation, blood sugar, muscle function, and hormone balance. Often depleted by stress, caffeine, alcohol, and sugar.

Sources: Pumpkin seeds, spinach, almonds, dark chocolate, black beans.

2. Iron 

Essential for energy, oxygen transport, and brain function. Low levels are common in women with heavy periods or those who avoid red meat.

Sources: Red meat, lentils, tofu, spinach (with vitamin C to aid absorption), dried apricots.

3. Vitamin B12 

Vital for energy, nerve health, and red blood cell formation. Absorption declines with age, digestive issues, or plant-based diets.

Sources: Meat, fish, eggs, dairy. Supplementation is often needed in deficiency, especially in vegan diets.

4. Vitamin D 

Supports immunity, bone health, mood, and hormone function. This is difficult to obtain through food alone, especially in low-sunlight regions.

Sources: Fatty fish, egg yolks, fortified foods, or sunlight plus supplements in the darker months.

5. Omega-3 Fatty Acids

Anti-inflammatory and crucial for brain, heart, and hormone health. Often low in modern diets.

Sources: Oily fish (salmon, sardines), flaxseeds, chia seeds, walnuts.

6. Zinc 

Essential for immune function, skin health, wound healing, and hormone production.

Sources: Oysters, pumpkin seeds, red meat, chickpeas.

7. Iodine

Key for thyroid health, often low in women who avoid dairy or salt.

Sources: Seaweed, dairy, fish, iodised salt.

8. Choline

Critical for brain health, liver function, and methylation. Often overlooked in standard nutrition advice.

Sources: Egg yolks, liver, salmon.

Why a “Healthy” Diet May Still Fall Short

Many modern “healthy” diets, especially among women trying to lose weight or eat clean, end up being too low in calories, fat, minerals and nutrients, or variety. For example:

• Cutting carbs can reduce B vitamins and fibre.
• Eating low-fat foods can impact the absorption of fat-soluble vitamins (A, D, E, K).
• Skipping red meat or eggs may lower iron, B12, and choline.
• Avoiding salt may reduce iodine.
• Plant-based diets, while nutrient-rich in many ways, can still miss key nutrients like zinc, B12, and omega-3s unless carefully planned.

The result? A well-fed body… yet undernourished.

How to Rebuild True Nutritional Depth

1. Eat more variety, not less: Aim for 30+ different plant foods per week, plus quality protein, fats, and mineral-rich foods.
2. Rethink fat and salt: Healthy fats and natural salt (e.g. sea salt, Himalayan) are vital for hormone health and mineral balance.
3. Include nutrient-dense “superfoods”: Sardines, eggs, shellfish, and fermented foods offer a high nutrient-to-calorie ratio.
4. Cook mindfully, not fearfully: Don’t let wellness culture scare you away from butter, egg yolks, or red meat. Where possible, opt for good quality and eat in moderation.
5. Consider targeted supplements, especially for magnesium, vitamin D, omega-3s, or B12, and see a qualified health practitioner who can test you.
6. Support digestion: Improve absorption by managing stress, chewing thoroughly, and addressing gut issues like reflux or bloating.

Eating healthily is a wonderful intention, but real wellness is about deep nourishment, not just clean choices or trend-based restrictions.

If you’ve been doing everything “right” and still feel tired, puffy, moody, or low in energy, consider this: your body may not need a stricter plan. It may need more nutrients, more colour, more diversity, and a little more kindness.

Because true health isn’t about eating perfectly. It’s about giving your body what it truly needs to thrive.

Take the Next Step in Your Health & Well-being Journey

Our bodies are all unique, and what works for one person may not work for you. That’s why it’s important to work with a qualified nutritionist or health coach to ensure you are getting the nutrients your body needs. I work with women offering a bespoke, tailored plan – reach out to find out how I can help you regain energy and vitality.

I believe that with the right nutrition, lifestyle changes, and support, you can feel more energised, balanced, and confident in your body.

If you’re ready to make lasting changes and need personalised guidance, I’m here to help. Whether you’re looking to balance hormones, improve digestion, boost energy, or manage your weight sustainably, I offer a range of health coaching packages tailored to your unique needs.

Let’s work together to create a plan that supports your health goals and fits into your lifestyle. Get in touch today to discuss your needs or explore my coaching packages to find the best option for you.

Your health is your greatest asset – let’s make it a priority!

👉 Contact me today to start your journey to better health.

👉 Explore my coaching packages to find the right fit for you.