Daily30+: Does it work?

Daily30+ is a wholefood, plant-based supplement designed by ZOE’s scientists. It contains more than 30 plants and 5 grams of fibre per serving, 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 fibre and plant intake.

As a science-first company, we had to ask: what impact does Daily30+ have? So, we ran a randomised controlled trial (RCT) – the gold standard of scientific research. 

Our scientists presented the findings at the Nutrition Society Congress 2024. You can read the abstract here and the full paper here.

In this article, we’ll explain what our researchers did and what they found in more detail.

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+ 

  • 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.

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.’

Study design for the Daily30+ RCT

What did we find?

Although our main focus was to investigate whether 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 indigestion, and 35% reported improvements in constipation.

Looking at digestive symptoms overall, 70% of participants in the Daily30+ group reported improvements. This is likely due to Daily30+’s fibre 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 the wholefood 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 point to how Daily30+ made meals more satisfying and kept participants feeling energised 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 report a change.

Participants reported an average increase of 5 points to their ZOE gut microbiome score in just 6 weeks.

Compared with people in the control group, those in the Daily30+ group reported increased numbers of ‘good’ gut bacteria and decreased numbers of ‘bad’ bacteria.

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 reported their gut was in a more favourable state.

What does it all mean?

After 6 weeks, on average, the participants who consumed Daily30+ reported better overall health** and increased energy and mood.  Plus, they felt fuller throughout the day.

We should also note that our recent RCT on METHOD, 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 fibre, a source of omega 3, a source of plant protein, naturally high in copper, which contributes to normal energy yielding metabolism.