We’re hearing a lot about ultra-processed foods and the health effects of eating too many. And we know plant-based foods are popular for health or other reasons.

So it’s not surprising new research out this week including the health effects of ultra-processed, plant-based foods is going to attract global attention.

And the headlines can be scary if that research and the publicity surrounding it suggests eating these foods increases your risk of heart disease, stroke or dying early.

Here’s how some media outlets interpreted the research. The Daily Mail ran with:

Vegan fake meats are linked to increase in heart deaths, study suggests: Experts say plant-based diets can boost health – but NOT if they are ultra-processed

The New York Post’s headline was:

Vegan fake meats linked to heart disease, early death: study

But when we look at the study itself, it seems the media coverage has focused on a tiny aspect of the research, and is misleading.

So does eating supermarket plant-based burgers and other plant-based, ultra-processed foods really put you at greater risk of heart disease, stroke and premature death?

Here’s what prompted the research and what the study actually found.

Remind me, what are ultra-processed foods?

Ultra-processed foods undergo processing and reformulation with additives to enhance flavour, shelf-life and appeal. These include everything from packet macaroni cheese and pork sausages, to supermarket pastries and plant-based mince.

There is now strong and extensive evidence showing ultra-processed foods are linked with an increased risk of many physical and mental chronic health conditions.

Although researchers question which foods should be counted as ultra-processed, or if all of them are linked to poorer health, the consensus is that, generally, we should be eating less of them.

We also know plant-based diets are popular. These are linked with a reduced risk of chronic health conditions such as heart disease and stroke, cancer and diabetes. And supermarkets are stocking more plant-based, ultra-processed food options.

How about the new study?

The study looked for any health differences between eating plant-based, ultra-processed foods compared to eating non-plant based, ultra-processed foods. The researchers focused on the risk of cardiovascular disease (such as heart disease and stroke) and deaths from it.

Plant-based, ultra-processed foods in this study included mass-produced packaged bread, pastries, buns, cakes, biscuits, cereals and meat alternatives (fake meats). Ultra-processed foods that were not plant-based included milk-based drinks and desserts, sausages, nuggets and other reconstituted meat products.

The researchers used data from the UK Biobank. This is a large biomedical database that contains de-identified genetic, lifestyle (diet and exercise) and health information and biological samples from half a million UK participants. This databank allows researchers to determine links between this data and a wide range of diseases, including heart disease and stroke.

They used data from nearly 127,000 people who provided details of their diet between 2009 and 2012. The researchers linked this to their hospital records and death records. On average, the researchers followed each participant’s diet and health for nine years.

What did the study find?

With every 10% increase of total energy from plant-sourced, ultra-processed foods there was an associated 5% increased risk of cardiovascular disease (such as heart disease or stroke) and a 12% higher risk of dying from cardiovascular disease.

But for every 10% increase in plant-sourced, non-ultra-processed foods consumed there was an associated 7% lower risk of cardiovascular disease and a 13% lower risk of dying from cardiovascular disease.

The researchers found no evidence for an association between all plant-sourced foods (whether or not they were ultra-processed) and either an increased or decreased risk of cardiovascular disease or dying from it.

This was an observational study, where people recalled their diet using questionnaires. When coupled with other data, this can only tell us if someone’s diet is associated with a particular risk of a health outcome. So we cannot say that, in this case, the ultra-processed foods caused the heart disease and deaths from it.

Why has media coverage focused on fake meats?

Much of the media coverage has focused on the apparent health risks associated with eating fake meats, such as sausages, burgers, nuggets and even steaks.

These are considered ultra-processed foods. They are made by deconstructing whole plant foods such as pea, soy, wheat protein, nuts and mushrooms, and extracting the protein. They are then reformulated with additives to make the products look, taste and feel like traditional red and white meats.

However this was only one type of plant-based, ultra-processed food analysed in this study. This only accounted for an average 0.2% of the dietary energy intake of all the participants.

Compare this to bread, pastries, buns, cakes and biscuits, which are other types of plant-based, ultra-processed foods. These accounted for 20.7% of total energy intake in the study.

It’s hard to say why the media focused on fake meat. But there is one clue in the media release issued to promote the research.

Although the media release did not mention the words “fake meat”, an image of plant-based burgers, sausages and meat balls or rissoles featured prominently.

The introduction of the study itself also mentions plant-sourced, ultra-processed foods, such as sausages, nuggets and burgers.

So it’s no wonder people can be confused.

Does this mean fake meats are fine?

Not necessarily. This study analysed the total intake of plant-based, ultra-processed foods, which included fake meats, albeit a very small proportion of people’s diets.

From this study alone we cannot tell if there would be a different outcome if someone ate large amounts of fake meats.

In fact, a recent review of fake meats found there was not enough evidence to determine their impact on health.

We also need more recent data to reflect current eating patterns of fake meats. This study used dietary data collected from 2009 to 2012, and fake meats have become more popular since.

What if I really like fake meat?

We have known for a while that ultra-processed foods can harm our health. This study tells us that regardless if an ultra-processed food is plant-based or not, it may still be harmful.

We know fake meat can contain large amounts of saturated fats (from coconut or palm oil), salt and sugar.

So like other ultra-processed foods, they should be eaten infrequently. The Australian Dietary Guidelines currently recommends people should only consume foods like this sometimes and in small amounts.

Are some fake meats healthier than others?

Check the labels and nutrition information panels. Look for those lowest in fat and salt. Burgers and sausages that are a “pressed cake” of minced ingredients such as nuts, beans and vegetables will be preferable to reformulated products that look identical to meat.

You can also eat whole plant-based protein foods such as legumes. These include beans, lentils, chickpeas and soy beans. As well as being high in protein and fibre, they also provide essential nutrients such as iron and zinc. Using spices and mushrooms alongside these in your recipes can replicate some of the umami taste associated with meat.

Evangeline Mantzioris, Program Director of Nutrition and Food Sciences, Accredited Practising Dietitian, University of South Australia

This article is republished from The Conversation under a Creative Commons license. Read the original article.

According to social media, carbs come in various guises: naked carbs, net carbs, complex carbs and more.

You might be wondering what these terms mean or if all carbs are really the same. If you are into “carb counting” or “cutting carbs”, it’s important to make informed decisions about what you eat.

What are carbs?

Carbohydrates, or “carbs” for short, are one of the main sources of energy we need for brain function, muscle movement, digestion and pretty much everything our bodies do.

There are two classifications of carbs, simple and complex. Simple carbs have one or two sugar molecules, while complex carbs are three or more sugar molecules joined together. For example, table sugar is a simple carb, but starch in potatoes is a complex carb.

All carbs need to be broken down into individual molecules by our digestive enzymes to be absorbed. Digestion of complex carbs is a much slower process than simple carbs, leading to a more gradual blood sugar increase.

Fibre is also considered a complex carb, but it has a structure our body is not capable of digesting. This means we don’t absorb it, but it helps with the movement of our stool and prevents constipation. Our good gut bacteria also love fibre as they can digest it and use it for energy – important for a healthy gut.

What about ‘naked carbs’?

“Naked carbs” is a popular term usually used to refer to foods that are mostly simple carbs, without fibre or accompanying protein or fat. White bread, sugary drinks, jams, sweets, white rice, white flour, crackers and fruit juice are examples of these foods. Ultra-processed foods, where the grains are stripped of their outer layers (including fibre and most nutrients) leaving “refined carbs”, also fall into this category.

One of the problems with naked carbs or refined carbs is they digest and absorb quickly, causing an immediate rise in blood sugar. This is followed by a rapid spike in insulin (a hormone that signals cells to remove sugar from blood) and then a drop in blood sugar. This can lead to hunger and cravings – a vicious cycle that only gets worse with eating more of the same foods.

What about ‘net carbs’?

This is another popular term tossed around in dieting discussions. Net carbs refer to the part of the carb food that we actually absorb.

Again, fibre is not easily digestible. And some carb-rich foods contain sugar alcohols, such as sweeteners (like xylitol and sorbitol) that have limited absorption and little to no effect on blood sugar. Deducting the value of fibre and sugar alcohols from the total carbohydrate content of a food gives what’s considered its net carb value.

For example, canned pear in juice has around 12.3g of “total carbohydrates” per 100g, including 1.7g carb + 1.7g fibre + 1.9g sugar alcohol. So its net carb is 12.3g – 1.7g – 1.9g = 8.7g. This means 8.7g of the 12.3g total carbs impacts blood sugar.

The nutrition labels on packaged foods in Australia and New Zealand usually list fibre separately to carbohydrates, so the net carbs have already been calculated. This is not the case in other countries, where “total carbohydrates” are listed.

Does it matter though?

Whether or not you should care about net or naked carbs depends on your dietary preferences, health goals, food accessibility and overall nutritional needs. Generally speaking, we should try to limit our consumption of simple and refined carbs.

The latest World Health Organization guidelines recommend our carbohydrate intake should ideally come primarily from whole grains, vegetables, fruits and pulses, which are rich in complex carbs and fibre. This can have significant health benefits (to regulate hunger, improve cholesterol or help with weight management) and reduce the risk of conditions such as heart disease, obesity and colon cancer.

In moderation, naked carbs aren’t necessarily bad. But pairing them with fats, protein or fibre can slow down the digestion and absorption of sugar. This can help to stabilise blood sugar levels, prevent spikes and crashes and support personal weight management goals. If you’re managing diabetes or insulin resistance, paying attention to the composition of your meals, and the quality of your carbohydrate sources is essential.

A ketogenic (high fat, low carb) diet typically restricts carb intake to between 20 and 50g each day. But this carb amount refers to net carbs – so it is possible to eat more carbs from high-fibre sources.

Some tips to try

Some simple strategies can help you get the most out of your carb intake:

• reduce your intake of naked carbs and foods high in sugar and white flour, such as white bread, table sugar, honey, lollies, maple syrup, jam, and fruit juice

• opt for protein- and fibre-rich carbs. These include oats, sweet potatoes, nuts, avocados, beans, whole grains and broccoli

• if you are eating naked carbs, dress them up with some protein, fat and fibre. For example, top white bread with a nut butter rather than jam

• if you are trying to reduce the carb content in your diet, be wary of any symptoms of low blood glucose, including headaches, nausea, and dizziness

• working with a health-care professional such as an accredited practising dietitian or your GP can help develop an individualised diet plan that meets your specific needs and goals.

Correction: this article has been updated to indicate how carbohydrates are listed on food nutrition labels in Australia and New Zealand.

Saman Khalesi, Senior Lecturer and Discipline Lead in Nutrition, School of Health, Medical and Applied Sciences, CQUniversity Australia; Anna Balzer, Lecturer, Medical Science School of Health, Medical and Applied Sciences, CQUniversity Australia; Charlotte Gupta, Postdoctoral research fellow, CQUniversity Australia; Chris Irwin, Senior Lecturer in Nutrition and Dietetics, School of Health Sciences & Social Work, Griffith University, and Grace Vincent, Senior Lecturer, Appleton Institute, CQUniversity Australia

This article is republished from The Conversation under a Creative Commons license. Read the original article.