DigestsBlogs by Suna
Gut health, hormones, metabolism and health tech, explained simply.
Written by three medical doctors:
Dr Chad Okay, UCL Researcher, Suna’s CEO and Co-Founder
Dr Parisah Hussain, Family Medicine Physician and Suna’s Chief Medical Officer
Dr Sam Withington, Gastroenterology Speciality Registrar and Suna’s Gut Health Lead
Every entry is written by a doctor and cites NHS, NICE, BSG and peer-reviewed sources.
Quick Bites
weekly15 October 2026. 3 min read.
Smart rings versus watches: your fingertip and your wrist are not telling the same story
Dr Parisah Hussain8 October 2026. 2 min read.
Would you drink your own blood for science? The Vampire study
Dr Sam Withington30 September 2026. 2 min read.
Your smart ring says it knows your hormones. It has never measured a single one.
Dr Parisah Hussain23 September 2026. 4 min read.
The signal was always there. The tool didn't exist.
Dr Sam Withington
Slow Cooked
monthlyEdition 2. 8 October 2026. 5 min read.
"It's all in your head." The most harmful half-truth in medicine.
The gut has a nervous system of its own, in constant conversation with the brain. Once you know that, the sentence stops being a dismissal and becomes the beginning of the explanation.
Dr Parisah HussainEdition 1. 23 September 2026. 5 min read.
Wellness advice is on every feed you scroll. Nobody checks who writes it.
A doctor on why honest wellness writing is the harder kind, and five checks for any page you read.
Dr Parisah Hussain
Guides
18 guidesThe reference shelf. The symptom, the test, the treatment, kept true for years under named review.Quick Bites follows the week. Slow Cooked takes one question a month. Guides answer what people search for.
Comparisons
5 side by sideMounjarovsOzempic
Both are weekly injections used for type 2 diabetes (and, in the UK, weight management). Mounjaro is tirzepatide (dual…
4 min read
Dr Chad OkayMounjarovsWegovy
Different drugs. Mounjaro is tirzepatide (a dual GLP-1 + GIP agonist). Wegovy is semaglutide (GLP-1 only). In the…
4 min read
Dr Chad OkayOzempicvsWegovy
Ozempic and Wegovy are both semaglutide. Same molecule. Different brand, different dose ladder, different licensed…
5 min read
Dr Chad OkayProbioticvsPrebiotic
Probiotics are live bacteria (capsules, yoghurt, kefir). Prebiotics are food (mostly fibre) that feeds the bacteria…
4 min read
Dr Chad OkayZOEvsViome
Both companies offer microbiome-based personalised nutrition programmes. ZOE is the most clinically validated of the…
4 min read
Dr Chad Okay