Vitamins and minerals are essential nutrients that your body needs in relatively small amounts to function properly. From supporting normal energy-yielding metabolism and immune function to helping maintain healthy bones and blood cells, they have a role in many everyday processes.
For most people, a varied and balanced diet should provide the vitamins and minerals they need. However, your nutritional needs can vary depending on your diet, lifestyle, age and other factors. ¹
So, how can you tell whether you're getting enough?
Here are seven things to consider when looking at your vitamin and mineral intake.
1. How varied is your diet?
One of the simplest ways to support your vitamin and mineral intake is to eat a wide variety of foods.
Different foods provide different nutrients, so eating a mixture of fruit and vegetables, wholegrains, pulses, dairy or alternatives, fish, eggs, meat and other sources of protein can help provide a broad range of vitamins and minerals. ²
For example:
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Fruit and vegetables can provide vitamin C, folate and potassium.
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Wholegrains can contribute B vitamins, iron and magnesium.
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Dairy products and fortified alternatives can provide calcium and other nutrients.
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Meat, fish and eggs provide a range of vitamins and minerals, including iron, zinc and B vitamins.
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Nuts and seeds can contribute nutrients such as magnesium, iron and zinc.
You don't need to get every nutrient from every meal. Instead, think about the variety of your diet over the course of a day or week.
2. Are you eating enough fruit and vegetables?
Fruit and vegetables are an important source of vitamins, minerals and fibre.
The NHS recommends eating at least 5 portions of a variety of fruit and vegetables each day. ³ This doesn't mean you have to eat exactly the same five foods every day. In fact, variety is important because different fruit and vegetables contain different combinations of nutrients.
Fresh, frozen, tinned and dried fruit and vegetables can all contribute to your intake, although there are some differences in portion sizes and preparation.
Try adding variety by including different colours throughout the week. For example, leafy greens, berries, peppers, carrots, tomatoes and citrus fruits can all bring different nutrients to your diet.
3. Does your diet exclude certain food groups?
The way you eat can affect which nutrients you need to pay particular attention to. For example, people following vegetarian or vegan diets may need to think carefully about nutrients including vitamin B12, iron, calcium and vitamin D, depending on the foods they regularly eat. Fortified foods can be useful sources of some nutrients. ⁴
Similarly, if you don't eat fish, you may want to consider how you're getting nutrients commonly associated with fish, such as omega-3 fatty acids. The important thing isn't that you need to eat every type of food. It's about making sure that foods you avoid are replaced with nutritious alternatives that provide the nutrients your body needs.
If you're following a restrictive diet, it can be helpful to speak to a GP or registered dietitian if you're unsure whether you're meeting your nutritional needs.
4. Are you getting enough vitamin D?
Vitamin D deserves particular attention in the UK because it can be difficult to get enough from food and sunlight alone, particularly during the autumn and winter months. Vitamin D helps regulate the amount of calcium and phosphate in the body and contributes to the maintenance of normal bones and teeth. ¹
The NHS advises that everyone should consider taking a daily vitamin D supplement during autumn and winter. Some people are advised to take vitamin D throughout the year, including those who are not often outdoors or who cover most of their skin when outside. ⁵
This is one example of why getting enough vitamins and minerals isn't simply about eating a healthy diet. Some nutrients may require additional consideration depending on where you live, your lifestyle and the time of year.
5. Has your nutritional needs changed?
Your vitamin and mineral requirements can change throughout life. For example, older adults may need to pay particular attention to nutrients such as vitamin B12, vitamin D and calcium. Women who have heavy periods may also need to be particularly mindful of iron intake, while pregnancy increases the need for certain nutrients and requires specific supplement advice. ⁶
Age, activity levels, dietary changes and other lifestyle factors can all affect the foods you choose and the nutrients you need.
This doesn't necessarily mean you need to take lots of supplements. Instead, it's worth periodically asking whether your current diet still suits your circumstances.
6. Are you noticing signs that something might be missing?
Feeling tired, experiencing changes in your skin or hair, or noticing other changes in your health can sometimes be associated with nutritional deficiencies. However, these symptoms can have many different causes, so they shouldn't automatically be assumed to mean you are lacking a particular vitamin or mineral.
For example, iron deficiency anaemia can cause symptoms such as tiredness and lack of energy, but tiredness itself can have many possible causes. ⁷
If you're concerned that you might have a deficiency, speak to your GP. They can assess your symptoms and, where appropriate, arrange blood tests or other investigations rather than relying on guesswork.
It's generally better to identify whether there is a genuine deficiency before taking high-dose supplements.
7. Are you taking several supplements at once?
If you do take supplements, it's worth looking at the labels regularly. Taking a multivitamin alongside several individual vitamin and mineral supplements can sometimes mean you're getting the same nutrient from more than one source.
More isn't necessarily better when it comes to vitamins and minerals. Some nutrients can be harmful in excessive amounts, particularly when high-dose supplements are taken over a long period.
Check the amount of each nutrient in your supplements and consider whether you actually need all of them. If you're unsure, a pharmacist, GP or other qualified healthcare professional can help you understand what is appropriate for you.
A simple vitamin and mineral check
If you're wondering whether you're getting enough vitamins and minerals, start with your overall diet rather than immediately reaching for supplements.
Ask yourself:
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Question |
What to consider |
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Do I eat a variety of foods? |
Include foods from the main food groups |
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Do I eat enough fruit and vegetables? |
Aim for at least 5 portions a day |
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Do I eat wholegrains and pulses? |
These can provide fibre, vitamins and minerals |
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Do I eat sources of protein? |
Include options such as beans, pulses, eggs, fish, meat or alternatives |
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Do I consume dairy or fortified alternatives? |
These can help provide calcium and other nutrients |
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Do I get enough vitamin D? |
Consider UK guidance, particularly during autumn and winter |
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Do my supplements overlap? |
Check labels for nutrients you're already getting elsewhere |
Food first, supplements when needed
For most people, food should be the starting point for getting vitamins and minerals. A balanced diet provides more than individual nutrients. Foods contain a combination of vitamins, minerals, fibre, protein, healthy fats and other compounds that work together as part of your overall diet.
However, supplements can have a useful role when dietary intake isn't enough or when there is a recognised need for a particular nutrient. The key is choosing supplements based on your individual circumstances rather than assuming that taking more will automatically be better.
What if you're still unsure?
You don't need to calculate every vitamin and mineral you eat each day.
Instead, look at your overall eating habits. Are you eating a reasonable variety of foods? Are you regularly including fruit and vegetables, wholegrains, protein sources and dairy or fortified alternatives? Are there particular nutrients you may need to pay more attention to because of your diet, age or lifestyle?
If the answer is yes, you're already taking some positive steps towards meeting your nutritional needs.
If you have concerns about a possible deficiency or have made significant changes to your diet, speak to a GP or registered dietitian for personalised advice.
FAQs
How do I know if I'm getting enough vitamins and minerals?
A varied and balanced diet is the best starting point. If you have a restricted diet, particular nutritional needs or symptoms that concern you, speak to a healthcare professional who can advise whether further assessment is appropriate.
Do I need to take a multivitamin every day?
Not necessarily. Most people should be able to get the nutrients they need from a varied and balanced diet, although some people may benefit from specific supplements depending on their circumstances. ¹
Which vitamins and minerals should I pay the most attention to?
There isn't one list that applies to everyone. Vitamin D, vitamin B12, iron, calcium and other nutrients may be particularly relevant depending on your diet, age, lifestyle and individual circumstances.
Can I get all my vitamins and minerals from food?
For most people, a varied and balanced diet can provide the nutrients they need. There are some situations where supplements are recommended or may be useful, such as vitamin D supplementation during autumn and winter in the UK.
Can you take too many vitamins and minerals?
Yes. Taking excessive amounts of some vitamins and minerals, particularly through high-dose supplements, can be harmful. Always follow the recommended dosage and check whether you're taking the same nutrient from more than one supplement.
Getting enough vitamins and minerals isn't about having a perfect diet or taking a long list of supplements.
Start by looking at the variety of foods you eat, make sure you're regularly including fruit and vegetables and consider whether your diet or lifestyle means you need to pay particular attention to certain nutrients.
For most people, a balanced diet is the foundation. Where supplements are appropriate, they should complement your diet rather than replace it.
References
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https://www.nhs.uk/Live-well/eat-well/food-guidelines-and-food-labels/the-eatwell-guide/
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https://www.nhs.uk/live-well/eat-well/how-to-eat-a-balanced-diet/the-vegetarian-diet/
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https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-d/
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https://www.nhs.uk/pregnancy/keeping-well/pregnancy-vitamins-and-supplements/