Are All Ultra-Processed Foods Bad? – Explained by a Dietitian

Ultra-processed foods (UPFs) have become one of the most talked-about topics in nutrition and public health. From social media debates to government guidelines, it seems everyone has an opinion on whether we should avoid them completely. But are all ultra-processed foods bad for you? As dietitians, we often get asked this question, as it can be confusing to know what “processed” really means and how it affects our health.

This blog will break down the science, separate fact from fear, and help you understand how UPFs can fit into a balanced diet.

What Does “Ultra-Processed Food” Mean?

To understand whether UPFs are bad for you, it’s important to define the term. Nutrition scientists use the NOVA classification system, which groups foods into four categories:

1. Unprocessed or minimally processed foods – Fresh fruit, vegetables, whole grains, meat, milk, eggs
2. Processed culinary ingredients – Oils, butter, sugar, salt
3. Processed foods – Tinned vegetables, cheese, freshly baked bread, cured meats.
4. Ultra-processed foods (UPFs) – Industrially formulated foods typically with 5 or more ingredients, including additives, sweeteners, flavourings and preservatives. Examples include soft drinks, packaged snacks, instant noodles, baked goods, and ready meals.

The concern comes from category 4 – foods that are heavily modified, often high in added fats, sugar, and salt, and designed to be hyper-palatable. This means that the foods have been engineered to be very appealing, making them difficult to stop eating.

Why Are Ultra-Processed Foods Considered “Bad”?

Several studies have linked a high intake of UPFs to health problems such as:

• Obesity and weight gain – UPFs are often calorie-dense and easy to overeat. Consumption of UPF’s can cause significant weight gain.
• Heart disease – Diets high in UPFs may increase risk due to excess sodium, trans fats, and low fibre content. There is an adverse association between CV risk and UPF intake.
• Type 2 diabetes – A diet dominated by UPFs can cause spikes in blood sugar and insulin resistance. In a meta-analysis, research found that a 10% increase in total UPF intake was associated with a 12% higher risk of type 2 diabetes, with a linear dose response action.
• Digestive issues – Many UPFs are low in fibre, which is essential for gut health. There are also many additives found in UPFs, and these link with gut disease, including inflammatory bowel disease (IBD) and bowel cancer.
• Mental health concerns – Emerging research suggests a possible link between high UPF intake and anxiety or depression.

However, the evidence isn’t always straightforward. These associations don’t mean that every single ultra-processed food available is harmful in moderation, it’s more often the frequency and volume of consumption that is more important.

Are All Ultra-Processed Foods Created Equal?

This is where the conversation gets nuanced. Not all UPFs are foods that we should eliminate. In fact, some foods classed as UPFs can actually support a healthy diet and improve access to nutrition. For example:

• Fortified breakfast cereals – While these are classed as ultra-processed, they provide added iron, folic acid, and B vitamins.
• Wholegrain bread – Many packaged breads are classified as UPFs but can be a good source of fibre and B vitamins.
• Plant-based milks – Often fortified with calcium and vitamin D, these provide valuable nutrients for people who don’t consume dairy.
• Tinned beans or lentil soups – Convenient, affordable, and can be nutrient-rich.
• Medical nutrition products – Meal replacements or fortified shakes used for people with specific health conditions.

It’s not the processing itself that’s harmful but rather the nutritional profile of the final product.

The Dietitian’s Perspective: Balance Over Fear

As a dietitian, we don’t recommend eliminating every single UPF from your diet. Instead, the goal is to:

• Prioritise whole and minimally processed foods where possible. This includes going for foods like fresh and frozen fruits, vegetables, whole grains, pulses, nuts and seeds, as well as unprocessed proteins like fresh fish, poultry, meats and eggs.
• Read labels – Choose options that are lower in added sugar, salt, and saturated fats. Avoid products with a very long ingredients list, especially when that list contains additives and artificial flavourings.
• Use UPFs strategically – They can provide convenience, affordability, and accessibility.
• Be realistic – In modern life, eating zero UPFs isn’t practical for most people. This is especially true for those who are unable to cook from scratch for every single meal, as well as when travelling or enjoying social occasions, which are an important part of life.

Food is more than nutrients – it’s about culture, enjoyment and pleasure, as well as sustainability. A rigid “all or nothing” mindset can backfire, leading to guilt or disordered eating in the long term.

Ultra-Processed Foods and Convenience

We live in a fast-paced world where convenience is highly valued. With a click of a button, we can be spoilt for choice when it comes to takeaways and ready meals, all without any effort or cooking. UPFs have become part of daily life because they are:

• Time-saving – Ready to consume snacks and meals are often ideal for those with busy schedules, who believe that cooking is time consuming, or feels like a chore.
• Affordable – Unfortunately, UPFs can often be cheaper than fresh products in the supermarket. There are also regular deals and discounts provided to UPFs, more often than the less processed products.
• Long-lasting – Extended shelf life due to the extra preservatives and additives in UPFs means that they can last weeks to months, which can help to reduce waste.
• Accessible – With the huge increase in types of UPF’s, these are now readily available everywhere, from supermarkets and small convenience stores to petrol stations and delivery apps.

The accessibility is important for people with limited cooking skills, mobility challenges, or financial constraints. The challenge is choosing better-quality UPFs, to ensure you are consuming more nutritious options when possible.

How to Spot a “Better” Ultra-Processed Food

Not all UPFs are nutritionally equal. Here are some dietitian-approved tips for making healthier choices:

1. Check the fibre content – Fibre is crucial for satiety but also supports our gut health. A good fibre intake is associated with reduce risk of type 2 diabetes and high cholesterol, as well as  certain cancers. Aim for at least 3g fibre per serving.
2. Look at sugar – Sugars are often added to improve taste, and these can be in various forms such as glucose syrup, fructose, honey and molasses. Less than 5g sugars per 100g of a product is considered low.
3. Keep salt in check – Salt is often added in large quantities, to enhance the flavour of the product. Choose options where possible that have less than 0.3g salt per 100g.
4. Watch saturated fat – High intakes of saturated fats are linked with poor health outcomes. Opt for products under 1.5g saturated fats per 100g.
5. Seek out fortified foods – Fortified foods will contain extra nutrients, such as vitamin B12, D, iron & calcium. These can boost your intake of essential nutrients, that are often missing from processed meals.

Here are a few examples of making better ultra processed food swaps:

Instead of a high-sugar breakfast cereal, choose a wholegrain version, with minimal added sugars, that has added vitamins and minerals.

Instead of a ready meal high in saturated fats and salt, opt for the ready meal that has a higher proportion of vegetables to provide extra fibre and nutrients, has a smaller ingredient list, and contains no added sugars.

The Role of Portion Size

Remember, that even healthier types of UPFs can contribute to weight gain if consumed in excess, as calories can still add up. Portion control is key:

• Stick to recommended serving sizes, or reach out to our dietitians, who can offer you support in understanding your tailored portion sizes.
• Avoid eating straight from the packet or bag. It’s best to serve yourself a portion in a plate or bowl.
• Pair UPFs with whole foods, for better balance and satiety. For example, add in fruits and nuts to cereal, and add in a cooked portion of vegetables alongside a ready meal.

Are Ultra-Processed Foods Addictive?

Another frequently asked question is whether UPFs are addictive. Research shows that foods high in refined carbohydrates, added fats, sugar and salt, are highly rewarding. Eating these foods can trigger brain reward systems similar to addictive substances, meaning they can be consumed compulsively and in large quantities.

However, it is understood that unlike alcohol or drug use, UPF’s do not cause a chemical dependency. Instead, it a specially formulated combination of flavours, convenience and marketing that drives overconsumption. Therefore, working on the practice of portion control, mindful eating and removing food rules, can help reduce reliance of these types of foods.

It’s also important to remember that food can be emotional and social. For example, a birthday cake, an ice cream on a hot day, or a packet of crisps at a picnic all have a place in life. Demonising these foods can create unnecessary stress and anxiety around foods.

The key message: Occasional indulgence won’t harm your health if your overall diet is balanced.

Practical Tips to Reduce Reliance on Ultra-Processed Foods

If you are struggling with a diet high in UPFs, but want to make a change, here are some of our top strategies to help you make overall healthier habits when it comes to food choices:

• Batch cook meals – When cooking, make meals in larger portions, and then freeze these extra portions for busy days. Be sure to label the boxes, so you can remember what’s inside!
• Keep healthy snacks handy – UPFs are convenient – so make healthier snacks more convenient, by stocking up on nutritious easy to grab options such as yoghurts, fruits, hummus + veggie sticks and nuts.
• Plan ahead – Ensure you are thinking ahead to help with success. Write shopping lists to stock up on more nutritious foods and write a plan for meals you will create that week, so you have less decisions to make on the day about what to cook. Forward planning is often key to success.
• Use simple swaps – Swap flavoured yoghurts to plain yoghurt with fruit, replace high sugar cereals with porridge or overnight oats, swap crisps for whole grain crackers etc.
• Cook with semi-processed foods – Foods such as tinned beans and pulses, ready cooked grains, and frozen vegetables, may all be classed as processed foods, but these are all incredibly helpful to create nutritious meals.

The debate around ultra-processed foods often creates confusion and unnecessary fear. As dietitians, our advice is simple: focus on variety, moderation, and balance. Enjoy minimally processed foods as the foundation of your diet the majority of the time, but remember, do not feel guilty if you end up consuming some UPFs in your routine.

Being healthy and eating well isn’t defined by one meal or one type of food. It is determined by long term patterns – being able to make mindful choices and educating yourself on healthier options will help you make the best decisions to support your wellbeing and health for the long term, even if that means occasionally including ultra-processed foods in the diet. If you would like personalised support on how to improve the quality of your diet to reduce UPFs, reach out to our team of registered dietitian’s today.