To get a free blood sugar sensor with your test kit you must consent to our study and have a compatible device capable of scanning your sensor. Details of device compatibility are listed in the technology FAQ.

After purchasing a ZOE plan, you will be directed to a page where you are prompted to complete your order and consent to our study.

To be eligible for the study you must meet the following criteria:

• You are at least 18 years of age

• You live in England, Scotland, Wales, or Northern Ireland.

• You have a body mass index (BMI) of at least 16.5 kg/m2.

• You are not pregnant.

• You have not had a heart attack (myocardial infarction), stroke/transient ischemic attack, or major surgery in the last two months.

• You can safely eat our test meals.

• If you are being treated for chronic medical conditions (including type 1 diabetes or type 2 diabetes), you have checked with your treating physician that this product is safe for you (note that to participate in the PREDICT 3 study you must not have been diagnosed with eating disorders, type 1 diabetes, or type 2 diabetes).

Prospective participants must also be able to fast for a required period of 4 hours.

Within the panel of next-generation sequencing approaches for studying the human microbiome, we chose shotgun metagenomics as it is the most comprehensive approach at sampling the whole DNA content of a microbiome. This technique can detect very low abundance members of the microbial community (i.e. those found in very small numbers) that may be missed using other methods and provides information about the metabolic processes and functions present within a microbial community.

You can learn more about how we analyse your gut microbiome here.