Vegan Deficiencies: How to Avoid Them?
Vegan deficiencies can be avoided through a varied and well-planned plant-based diet, supplemented if necessary by key nutrients such as vitamin B12 🍃
When we talk about a plant-based diet, one question almost always comes up: are vegan deficiencies inevitable? 🤔
Between comments about protein, iron, or vitamin B12, one might sometimes feel that being vegan is synonymous with an unbalanced diet. However, vegan deficiencies are not a foregone conclusion. As with any diet, everything depends on how it is structured!
And that is precisely where nutrients play a key role:
1) Vegan deficiencies: a common concern
The topic of vegan deficiencies is a major concern, especially for beginners. But one must distinguish between a poorly planned plant-based diet… and a balanced vegan diet 🌱
a) The nutrients most at risk

Certain nutrients require special attention:
- Vitamin B12, which is essential and must be supplemented
- Iron, found in lentils, chickpeas, and green vegetables
- Omega-3s, found in flax seeds, chia seeds, or walnuts
- Calcium, available in certain vegetables and fortified products
- Zinc, contained in whole grains and legumes
Discussing vegan deficiencies does not mean they are automatic, but rather that one must be informed 🧐
b) Why vegan deficiencies can occur
🍴 A lack of variety in the diet
🫛 Low consumption of legumes and oilseeds
📊 Nutritional requirements are not well known
🧬 Vitamin B12 is neglected
In other words, it is not being vegan that causes deficiency, but a lack of balance.
2. How to avoid vegan deficiencies on a daily basis?
Good news! Preventing vegan deficiencies is entirely possible with a few simple basics 😁
a) Focus on diversity in nutrients
Plant-based foods are naturally rich in micronutrients. To limit the risks of vegan deficiencies, it is important to have the following every day:
- Legumes for protein and iron
- Whole grains for energy and certain minerals
- Seeds and oilseeds for healthy lipids
- A wide variety of fruits and vegetables
The more colorful and varied the plate, the more complete it is 😉🥗

b) Optimizing nutritional intake
A few simple habits can really make a difference!
Pairing plant-based iron with vitamin C
The iron found in plant-based foods is less easily absorbed by the body than iron from animal sources. It is called non-heme iron.
The good news is that vitamin C significantly improves its absorption. It transforms plant-based iron into a form the body can better utilize!
For example:
Lentils + bell peppers
Spinach + lemon juice
Chickpeas + tomatoes
Soaking or sprouting certain legumes
Legumes contain natural factors (e.g., phytates) that can hinder the absorption of certain nutrients like iron, zinc, or calcium.
Soaking or sprouting legumes helps reduce these compounds that block absorption, making the nutrients more accessible to the body. Soaking also makes vegetables easier to digest, and sprouting increases their vitamin content.
Choosing calcium-rich foods
→ Almonds
→ Green vegetables (kale, spinach, broccoli...)
→ Whole sesame seeds
→ Chia seeds
Plant-based milks fortified with calcium (soy, almond, oat...) are a simple solution. Some provide as much calcium as regular milk: just check the label!
Supplementing with vitamin B12, essential for a vegan diet
Vitamin B12 is the most important point when discussing vegan deficiencies. It is rarely present in plant-based foods.
In fact, even livestock animals are supplemented with vitamin B12.
Supplementation is therefore essential, either via a dietary supplement or via B12-fortified products.
With these habits, vegan deficiencies become much less likely 🍉🌱
3. Plant-based foods: the best answer to vegan deficiencies
Plant-based foods are not just a substitute for animal products. They are the foundation of nutritional balance in a plant-based diet 🌱
By understanding your needs and relying on a diversity of plant sources, it is entirely possible to have a balanced vegan diet, free of deficiencies! 😉💛
SOURCES:
→ Pub Med – National Library of Medicine
→ Mium Lab