Most healthy adults can meet their nutritional needs through a varied, balanced diet. But some stages of life, dietary patterns and health conditions can create different nutritional requirements.
Pregnancy, breastfeeding, older age, highly active lifestyles and diets that exclude particular food groups can all require a little more planning. Medical conditions such as coeliac disease can also require specific dietary changes. (NHS pregnancy guidance; NHS vegan diet; NHS coeliac disease)
The important point is that “special nutritional needs” does not mean everyone needs a complicated diet or a cupboard full of supplements.
It means your nutritional needs may need more attention because of your circumstances.
What Are Special Nutritional Needs?
Nutritional needs are influenced by factors such as age, pregnancy, breastfeeding, activity levels, dietary restrictions and health conditions.
The best approach is therefore not to look for one universal “special diet”.
Instead, start with the same basic principles that apply to healthy eating generally: variety, balance and enough food and fluids to meet your needs.
Then consider whether your particular situation changes anything.
This distinction matters because nutritional advice for a pregnant woman is not the same as advice for an older adult, a vegan or someone with coeliac disease.
Pregnancy and Breastfeeding
Pregnancy is one of the clearest examples of a time when nutritional needs deserve extra attention.
The NHS advises eating a varied diet during pregnancy rather than following a special diet or “eating for two”. Folic acid supplementation is recommended in pregnancy, and certain foods and supplements should be avoided. (NHS)
Pregnancy also changes some vitamin and mineral requirements.
For example, the NHS provides specific advice about folic acid, vitamin D and iron, and warns against vitamin A in the form of retinol and cod liver oil during pregnancy. (NHS)
This is exactly why pregnancy nutrition is not an area for guesswork.
Breastfeeding
You do not normally need to follow a special diet while breastfeeding.
The NHS recommends a healthy diet with a variety of foods, including fruit and vegetables, starchy carbohydrates, fibre, protein foods and dairy or suitable alternatives. Staying hydrated is also important. (NHS)
Some dietary choices require additional planning.
For example, a vegan diet during pregnancy or breastfeeding needs careful attention to nutrients that can be harder to obtain from plant foods.
Children and Teenagers
Children and teenagers are growing rapidly, so their nutritional needs are not simply smaller versions of adult needs.
Age, growth and development all matter.
This is one reason why restrictive diets in children should be approached particularly carefully.
A child who avoids major food groups because of an allergy, intolerance, ethical diet or personal preference may need help from a healthcare professional or dietitian to ensure the diet remains nutritionally adequate.
The same applies when a child has a medical condition that affects eating or nutrient absorption.
For parents, the practical goal is usually to provide a varied diet rather than becoming obsessed with individual “superfoods”.
Older Adults
Nutritional needs can change with age.
Older adults may have different appetites, activity levels and dietary requirements, while factors such as dental problems, swallowing difficulties, medication, illness or reduced ability to shop and cook can also affect what someone eats.
That means a nutritionally adequate diet may need to be adapted to the individual rather than judged by appearance alone.
Meals that are convenient, enjoyable and reasonably nutrient-dense can become particularly valuable when appetite is reduced.
Protein-rich foods, vegetables, fruit, whole grains and suitable sources of calcium and other nutrients still have an important place in a balanced diet.
Persistent loss of appetite, unexplained weight loss or difficulty eating should not simply be dismissed as a normal part of ageing. They may warrant medical advice.
Vegetarian and Vegan Diets
A vegetarian or vegan diet can be healthy and balanced, but eliminating animal foods means some nutrients may require more deliberate planning.
The NHS states that a well-planned vegan diet can provide the nutrients you need, but particular attention may be required for nutrients including vitamin B12, iodine, selenium, calcium and vitamin D. (NHS)
Useful plant-based foods include:
- beans, lentils and chickpeas
- whole grains
- vegetables and fruit
- nuts and seeds
- fortified plant-based foods
- suitable meat and dairy alternatives
Vitamin B12 deserves particular attention because reliable sources are limited in a vegan diet. The NHS lists fortified cereals, fortified soya drinks and fortified yeast products among possible sources, and notes that a supplement may be needed. (NHS)
Vegetarians can also benefit from paying attention to iron and vitamin B12.
The NHS notes that iron from plant foods is less easily absorbed than iron from meat and recommends including vitamin C alongside plant sources of iron. (NHS)
Food Allergies, Intolerances and Coeliac Disease
Food allergies and intolerances can make meal planning more complicated because avoiding certain foods may reduce dietary variety.
The answer is not simply to remove more and more foods.
A qualified professional can help make sure an exclusion diet still provides the nutrients you need.
Coeliac disease
Coeliac disease is different from simply choosing to avoid gluten.
It is an autoimmune condition in which eating gluten damages the small intestine. Treatment requires a strict lifelong gluten-free diet. (NHS)
People with coeliac disease should receive appropriate dietary advice. The NHS notes that newly diagnosed patients are referred to a dietitian to help them adapt to a gluten-free diet while keeping it balanced. (NHS)
One particularly important point is that you should not start a gluten-free diet before testing for coeliac disease unless advised to do so.
The NHS explains that eating gluten is necessary for the testing process to be accurate. (NHS)
That makes self-diagnosis a poor substitute for proper assessment.
Highly Active People and Athletes
People who train regularly or perform endurance or high-volume exercise may need more food and fluid than someone who is less active.
The exact requirement depends on the individual and the type, duration and intensity of activity.
The basic principles remain familiar: adequate energy, a good mixture of carbohydrate and protein foods, healthy sources of fat, plenty of fruit and vegetables, and sufficient fluids.
The important distinction is between being active and believing that every active person needs an elaborate sports-nutrition programme.
For many people, a balanced everyday diet is the starting point.
People training at a very high level, preparing for competition or struggling to maintain body weight may benefit from individual advice from a sports dietitian or other appropriately qualified professional.
Medical Conditions and Individual Dietary Needs
Some medical conditions can affect what you need to eat or how your body handles nutrients.
Examples include digestive disorders, kidney disease, diabetes and conditions that affect nutrient absorption.
Medications can also influence nutrition in some circumstances.
This is where generic internet advice has obvious limits.
A diet that is sensible for one person may be inappropriate for another with a different diagnosis, medication or nutritional requirement.
When a medical condition is involved, dietary changes should therefore be based on appropriate professional advice rather than a one-size-fits-all plan.
Do You Need Supplements?
Not necessarily.
Many people can obtain the nutrients they need from food, while certain situations do call for specific supplements.
Pregnancy is one example, and vegan diets may also require attention to nutrients such as vitamin B12 and iodine. (NHS; NHS)
The mistake is assuming that more supplements automatically means better nutrition.
Supplements can be useful when there is a genuine need, but they should not replace a varied diet or professional advice where that is needed.
When Should You Speak to a Healthcare Professional?
It is particularly sensible to seek professional advice when:
- you are pregnant or breastfeeding and have questions about your diet
- a child or teenager has significant dietary restrictions
- you follow a vegan or highly restricted diet and are unsure whether it is nutritionally adequate
- you have a diagnosed medical condition that affects eating or nutrient absorption
- you suspect a food allergy, intolerance or coeliac disease
- you have unexplained weight loss or persistent loss of appetite
- you are considering removing several major food groups
A GP, registered dietitian, pharmacist or other appropriately qualified healthcare professional can help determine whether you actually have a nutritional problem and what needs to be done about it.
The Bigger Picture
Special nutritional needs do not mean that healthy eating suddenly becomes impossibly complicated.
In many cases, the same foundations still apply: eat a varied diet, choose a good mixture of foods, drink enough fluid and avoid relying on one supposedly perfect food or supplement.
The difference is that certain life stages, dietary choices and health conditions may require more attention to particular nutrients.
Our Balanced Diet: The Evidence Based Guide to Healthy Eating article looks at the wider principles of a healthy eating pattern.
You can also read Why Minerals in Your Diet Matter: Essential Nutrients Your Body Needs for more about vitamins and minerals supplied by food.
And for people following plant-based diets, our advice should always be viewed alongside the need for appropriate individual assessment where nutritional adequacy is uncertain.
Good nutrition is not about finding one perfect menu.
It is about meeting your body’s needs in a way that is safe, varied and realistic for your circumstances.
Medical Disclaimer
This information is provided for general educational purposes only. It is not intended to diagnose, treat, cure or prevent any medical condition and should not be considered a substitute for advice from a qualified healthcare professional.
Nutritional needs vary according to age, pregnancy, breastfeeding, activity, dietary pattern, medical conditions and other individual circumstances. If you have a diagnosed condition, suspected allergy or intolerance, are taking medication, are pregnant or breastfeeding, or have significant dietary restrictions, speak with an appropriately qualified healthcare professional before making major changes to your diet.
Do not use this article as a substitute for individual medical assessment or professional guidance.