If you have started paying a bit more attention to fibre, gut health or blood sugar control, there is a fair chance you may also have come across the term resistant starch. For most people, though, it is still not something that has been explained particularly well, which is probably why it tends to sound more complicated than it really is.
In simple terms, resistant starch is a type of starch that is not fully digested in the small intestine. Instead of being broken down quickly and absorbed in the same way as more digestible starches, part of it travels further down the digestive tract where it can be fermented by the bacteria living in the large intestine. In the UK, resistant starch is included within the definition of dietary fibre, which helps explain why it has become such an interesting topic in conversations around gut health and metabolic health.
That matters because once people hear the word starch, they often assume they are dealing with something fairly straightforward. In reality, not all starch behaves in the same way, and that is where this conversation becomes useful. The structure of a food, the way it is prepared, and the type of carbohydrate it contains can all influence what happens after we eat it.
Teff is a good example of that. It is already an interesting grain from a fibre and nutrient perspective, but it is also relevant in the resistant starch conversation, which gives us another reason to think about it as more than simply "another grain".
Key points
- Resistant starch is a type of starch that behaves more like fibre because it is not fully digested in the small intestine.
- It is relevant to gut health because it can be fermented by gut microbes in the large intestine.
- Teff is one grain that can help bring resistant starch, fibre and greater plant diversity into the diet.
What is resistant starch?
The easiest way to think about resistant starch is as a type of carbohydrate that your body does not deal with in the usual way.
A lot of starch is digested in the small intestine and broken down into glucose, which is then absorbed into the bloodstream. Resistant starch is different because some of it "resists" that digestion process and reaches the large intestine instead. Once it gets there, it can be fermented by gut bacteria. That fermentation process produces compounds called short-chain fatty acids, which are one of the reasons resistant starch is discussed so often in relation to gut health.
This is also why resistant starch tends to come up in conversations around fibre, even though many people have never heard of it. From a physiological point of view, it behaves much more like fibre than like a rapidly digested starch.
Why are people talking about it?
One reason resistant starch is attracting more attention is that it helps explain why all carbohydrate foods are not the same.
That sounds obvious when written down, but public nutrition conversations still have a tendency to flatten everything into fairly basic categories. Carbohydrates are often discussed as though they all behave similarly, when in reality the source, structure and preparation of a food can all influence digestion and the body's response after eating.
From a gut health perspective, resistant starch is interesting because it provides fuel for certain beneficial gut microbes. From a blood sugar perspective, it is relevant because foods higher in resistant starch may lead to a more moderate post-meal blood glucose response than foods containing only more digestible starches. The British Nutrition Foundation notes that replacing digestible starch with resistant starch contributes to a reduction in the rise in blood glucose after a meal.
That does not mean people need to start analysing every gram of starch they eat. It simply means that carbohydrate quality matters, and resistant starch is part of that quality conversation.
Where do we find resistant starch?
Resistant starch is found naturally in a range of foods, including legumes and wholegrains, and it can also increase in some starchy foods when they are cooked and then cooled. This is why foods such as cooled potatoes, rice and pasta often come up in resistant starch discussions. Cooling changes the structure of the starch, making part of it less digestible.
You will also hear people mention slightly underripe bananas in this conversation, because their starch profile changes as they ripen. More generally, the important point is that food structure and preparation can make a meaningful difference.
That said, I don't think this needs to become a collection of food hacks. For most people, it is more useful to understand the principle and then apply it in a balanced, sensible way. The bigger win is still building a diet around a good range of fibre-rich plant foods, rather than chasing one nutritional feature in isolation.
So where does teff fit in?
Teff fits into this conversation because it is already a fibre-rich wholegrain, and it also contains resistant starch. That is part of what makes the grain so interesting from a nutritional perspective, alongside its broader fibre content and overall nutrient profile.
What I like about teff is that it brings together several things that matter at once. It contributes fibre, adds plant diversity and broadens the range of grains people eat on a regular basis. It also gives us a good example of how carbohydrate foods can offer more than simply quick energy.
That does not mean teff needs to be treated as a miracle food, nor does it need to replace the grains people already enjoy. The value is more practical than that. If someone's diet revolves around the same few staples each week, adding a grain like teff can quietly improve the overall quality and diversity of what they eat.
Where Teffies fit in
One of the challenges with any nutrition topic is that it can stay too theoretical unless it connects back to everyday food.
Most people are not thinking in terms of resistant starch when they walk into a shop or put a snack in their bag. They are thinking about convenience, taste, routine and what fits into the day. That's why foods made with useful ingredients matter.
Part of the role of Teffies is to make teff easier to access in a practical format. Not everyone is going to start cooking teff grain from scratch or baking with teff flour straight away, so Teffies give people a straightforward way to begin including teff within normal eating patterns, whether that is as part of a lunchbox, a mid-morning snack, or something to keep on hand when they are out and about.
That is probably the most helpful way to think about the product in this context. Teffies are not there to turn resistant starch into a gimmick. They are simply one realistic way of bringing a fibre-rich, teff-based food into everyday life.
What does this mean in practice?
For most people, the practical takeaway from resistant starch is not that they need to memorise food lists or overthink every meal. It is simply that there is value in paying a bit more attention to the quality and variety of the carbohydrate foods they eat.
That could mean including more legumes during the week, or broadening the grains you use rather than always relying on the same few staples. It could also mean choosing foods that bring fibre and resistant starch into the diet in a practical, realistic way.
For anyone who does not currently include teff, this is one of the reasons it is a grain worth knowing about.
Try this this week
- Include one fibre-rich plant food this week that you do not eat particularly often, whether that is a legume, a different wholegrain or another plant food altogether.
- If teff is new to you, use Teffies as a simple starting point rather than feeling you need to cook with the grain straight away.
- Pay a bit more attention to carbohydrate quality over the course of the week, not just quantity.
The bottom line
Resistant starch matters because it reminds us that starch is not just starch. The type of carbohydrate, the structure of the food and the way it is prepared can all influence how that food behaves in the body.
That is one of the reasons teff is worth paying attention to. It is a wholegrain that contributes fibre, adds plant diversity and also fits into the resistant starch conversation in a meaningful way. Teffies then make that grain easier to access in day-to-day life, which is important because useful nutrition advice only really matters when people can apply it consistently.
In the end, this is less about chasing a new buzzword and more about understanding the qualities of the foods we eat regularly. Resistant starch is part of that story, and teff is a very good place to start.