Prepare a few ingredients. Leave dinner flexible.
A few prepared ingredients can make dinner easier. Plan the storage as carefully as the cooking.
Nutritional & Functional Medicine
I'm Jonathan Chew, a nutritional and functional medicine practitioner in Kuala Lumpur. I write about nutrition, chronic health conditions and how to weigh the evidence.


The thinking behind the practice, its intellectual background and where it sits alongside other approaches to care.
Illustrative image from the existing essay; not a dose recommendation.
A few prepared ingredients can make dinner easier. Plan the storage as carefully as the cooking.

Give a jar of tahini a useful job with lime, ginger and vegetables you enjoy.
A warm, mostly plant-based breakfast using cooked chickpeas, tomatoes and a little lime.
Choose a starting point that fits an ordinary day.
My work brings together nutritional and functional medicine. Here, I make room for the questions that need a longer conversation: what the evidence says, what it leaves uncertain, and what that means for a person making a decision.
Read my backgroundFor client enquiries, contact RENN Asia Wellness.
Start with the introduction to nutritional and functional medicine, or choose an essay about a question you already have. Reading times are shown beside each essay.
The monthly letter is planned. Newsletter setup is being considered separately; delivery setup will be completed separately.
Once a month, when an essay is ready, I write to the people who want to be told. No noise, no selling — only the work.
Newsletter delivery is still being set up.