Why we build what we build.
Serena is built on peer-reviewed research and authoritative public health guidance. Every claim we make traces back to one of these sources.

On hypnosis
- Mayo ClinicHypnosis
One of the most widely cited clinical overviews of hypnosis, covering its uses for behaviour change, pain, and anxiety.
- National Institutes of Health · NCCIHHypnosis
The U.S. government’s summary of the evidence for hypnotherapy across conditions including IBS, anxiety, pain, and sleep.
- American Psychological Association · Division 30Society of Psychological Hypnosis
The APA division that sets the modern clinical definition of hypnosis and publishes research on its therapeutic use.
On weight and behaviour
- World Health OrganizationBody Mass Index
WHO’s global health observatory page on BMI, the authoritative source for how weight is measured at population scale.
- Centers for Disease Control and PreventionHealthy Weight with Diabetes
CDC’s practical guidance on sustainable weight change for people with diabetes, grounded in U.S. clinical data.
- American Diabetes AssociationWeight Management
ADA’s evidence-based guidance on weight as a factor in metabolic health, published for patients and clinicians.
Serena is a wellness companion designed to support your relationship with food, body, and rest. It is not a medical device, a diagnostic tool, or a substitute for professional medical or psychological care. If something is weighing on you, please reach out to a qualified clinician.