Updated 9th July 2026
Daily30: Does it work?
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Daily30 is a gut health supplement designed by ZOE’s scientists. It's made with more than 30 plants, helping you make any meal smarter.
This deliciously science-y product complements a wide range of dishes. Simply adding 1 scoop a day to your diet will boost your fiber and plant intake.
As a science-first company, we had to ask: what impact does Daily30 have? So, we ran a randomized controled trial (RCT) on our original formulation – the gold standard of scientific research.
Our findings have been published in the British Journal of Nutrition.
In this article, we’ll explain what our researchers did and what they found in more detail. Or find some delicious Daily30 recipes here.
The Daily30 RCT
The Daily30 RCT ran for 6 weeks and involved 349 healthy people in the United Kingdom. These individuals were split into three groups. Twice a day, they consumed:
Group 1: 15 g of Daily30 (original formulation)
Group 2: 14 g of croutons (control)
Group 3: a probiotic capsule containing L. rhamnosus, a ‘good’ species of bacteria
Before the trial and at the 6-week mark, we took stool samples and measures of metabolic health.
We also asked the participants to complete questionnaires about digestion, energy levels and hunger.
The crunch your gut’s* been craving.
Support gut health* and energy* and enhance the flavor and crunch of your meals.
Why the control matters
When designing an experiment, the choice of control is vitally important. You need to compare your intervention with something, but you don’t want to compare apples with oranges.
Alice Creedon, Ph.D., the study’s lead author, explains:
‘In nutrition research, it is very difficult to design a true placebo, i.e., something that looks and tastes the same as the test food but doesn't have the "active" ingredients of interest. This is why we often use “functional” controls – foods that can be used in the same way.’
‘This has the added benefit of showing us what will happen in a real-life scenario if people make "smart swaps" – swapping out a less nutritionally dense food like croutons for something more nutritionally dense, like Daily30.’
We also made sure that the croutons contained the same amount of calories as Daily30 so it was a fair match.
Most studies only use one control, but we decided to use two. The second control was a ‘positive’ control – a probiotic supplement. Alice explains that we chose L. rhamnosus because it’s "the most researched probiotic bacteria and has shown benefits for health in RCTs, so we know it works."
What did we find?
Although our main focus was to investigate whether our original formulation of Daily30 could improve gut microbiome composition, we found some other surprising benefits along the way.
For instance, 55% of those taking Daily30 each day reported a reduction in occasional indigestion, and 35% reported a reduction in occasional constipation.
Looking at digestive symptoms overall, 69.2% of participants in the Daily30 group reported improvements. This is likely due to Daily30’s fiber content.
Beyond the gut, 51% of participants using Daily30 reported an increase in energy*, and 45% reported an increase in happiness.
Increasing fullness and satisfaction
In another part of the study, we gave participants an identical test meal either with or without Daily30, and asked them some questions about the meal a couple of hours later. Compared with the test meal alone, when they added our gut health supplement, participants reported greater:
fullness (+41.5%)
meal satisfaction (+21.6%)
energy (+43.3%)
They also reported reduced:
hunger (-16.9%)
desire to eat (-70.9%)
These are all great results that indicate adding Daily30 made meals more satisfying for some participants, and kept them feeling energized and fuller for longer.
Daily30 and the gut microbiome
We hoped that simply adding Daily30 to our participants’ diets would improve their gut microbiome composition. And we’re happy to report that participants in the study did show a change.
First, we saw a significant impact of Daily30 on the number of specific species in the gut:
In the Daily30 group, 57 species significantly increased or decreased, compared to 14 in the control group and 4 in the probiotic group.
Next, we looked within each group to determine whether the species changing were “good” or “bad” bacteria. At the end of the study, those in the Daily30 group had increased levels of “good” gut bacteria and decreased levels of “bad” gut bacteria. This effect was not seen in either the control or probiotic groups.
ZOE’s research shows that these species are associated with either positive or negative measures of health.
It’s an impressive result – by simply adding a scoop of ZOE science to their plates, the participants underwent a shift in their gut microbiome to a more favorable state.
What does it all mean?
After 6 weeks, on average, the participants who consumed the original formula of Daily30 reported better overall health** and increased energy and mood. Plus, they felt fuller when they consumed Daily30 as part of their breakfast.
We should also note that our METHOD study, which tested ZOE membership and eating the ZOE way, produced even greater benefits.
So, it’s most important to focus on your whole dietary pattern – Daily30 is the icing on the cake.
In the Daily30 study, participants were happy to use the product each day, and they found it simple to stick to. It shows that Daily30 easily slots into busy lives.
For something to become your next healthy habit, it has to be simple and enjoyable, which Daily30 clearly is.
If you’d like to try Daily30, follow this link.
* Daily30 is naturally high in copper, which contributes to normal energy-yielding metabolism and the normal function of the immune system.
**High in fiber, a source of omega 3, a source of plant protein, naturally high in copper, which contributes to normal energy-yielding metabolism.
FAQs
What are the benefits of ZOE Daily 30?
ZOE Daily30 is a simple way to boost your fiber intake and support your gut. Over half of the participants in a study that tested the original Daily30 formula said they had higher energy levels and improved mood.
How much does ZOE 30 cost?
The cost of ZOE's Daily30 varies between regions and the type of subscription you choose. Find the full information here.
Is ZOE Daily 30 easy to use?
Yes, simply adding one scoop a day to your diet is a convenient way to add more than 30 plants to your diet.
