Dr. Boz Ratio Check
Compare blood glucose with ketones instead of reading either alone
- Difficulty
- Easy
- Time to result
- ~days to results
- Steps
- 5
- Confidence
- 96%
The Dr. Boz Ratio Check is Bosworth's way of combining two home measurements. Take blood glucose in mg/dL and blood ketones in mmol/L at the same time, then divide glucose by ketones. In the studio, Bartlett's readings of 86 and 0.9 produced a ratio of roughly 95, while Bosworth interpreted a colleague's 88 and 0.1 as a much higher ratio. She says she looks for ketones of at least 0.5 alongside a glucose reading below 100 and interprets lower ratios as stronger ketosis. The reusable mechanism is simultaneous measurement, calculation, and repeated comparison. However, the transcript does not establish this ratio as a validated diagnosis of insulin resistance or disease. Bosworth's disease-specific targets are her clinical claims and should be reviewed with an appropriate clinician rather than used for self-treatment.
Origin
Bosworth demonstrates the ratio at the studio table by testing glucose and ketones from the same finger prick and comparing her reading with Bartlett's and a team member's.
Core principles
- 01Interpret glucose and ketones together rather than in isolation
- 02Collect both readings from the same testing moment
- 03Repeat measurements before drawing conclusions from one result
- 04Use the ratio as Bosworth's tracking tool rather than a standalone diagnosis
How to run it
- 1
Prepare paired measurements
Insert the blood-glucose and blood-ketone strips before taking the sample so both results come from the same testing moment. Follow the device instructions.
Pro tip Bosworth suggests pricking the side of the finger because it has fewer nerve endings.
Watch out Home meters have limitations and do not directly measure insulin.
- 2
Record glucose and ketones
Write down blood glucose in mg/dL and blood ketones in mmol/L, along with relevant context such as when you last ate. Do not interpret either number before recording both.
Watch out Seek medical advice for concerning symptoms or readings rather than relying on this framework.
- 3
Calculate the ratio
Divide the glucose number by the ketone number. In the demonstration, Bosworth calls 86 divided by 0.9 roughly 95.
Pro tip Keep units consistent across repeated checks.
Watch out Very low ketone values make the ratio large and sensitive to small measurement changes.
- 4
Interpret it as Bosworth's metric
Bosworth describes ketones of 0.5 or greater with glucose below 100 as evidence of ketosis and treats lower ratios as preferable. Label this interpretation as her method, not a universally accepted diagnostic threshold.
Watch out The interview does not validate the ratio for diagnosing insulin resistance or directing disease treatment.
- 5
Compare repeated conditions
Repeat the paired check under similar conditions and look for a pattern rather than reacting to one result. Take the record to a qualified clinician if it will inform a health decision.
Pro tip Bosworth mentions checking first thing in the morning for several days.
Watch out Do not stop prescribed treatment or undertake fasting based on a ratio alone.
In the wild
Bartlett measures blood glucose of 86 and ketones of 0.9. Bosworth calculates a ratio near 95 and describes the combination as a good reading and evidence, by her method, that he is burning fat at that moment.
→ Two simultaneous readings become one comparison value rather than two isolated numbers.
A team member records glucose of 88 and ketones of 0.1. Bosworth interprets the resulting high ratio as evidence of insulin resistance, but the interview provides no independent diagnostic confirmation, making it an example of her interpretation rather than an established diagnosis.
→ The result illustrates why the framework must be labelled as a tracking method, not treated as medical proof.
Common mistakes
Calling the ratio a diagnosis
The ratio combines home readings, but the transcript does not establish it as a validated test for insulin resistance or any disease.
Comparing mismatched moments
The demonstration measures glucose and ketones together; readings from different times can reflect different conditions.
Acting on one reading
Bosworth herself refers to repeated morning checks, while one reading can vary with meals, timing, and measurement noise.
Is it for you?
Best for
It is best for people already using glucose and ketone meters who want to discuss a repeated pattern with a clinician.
Not ideal for
It is not ideal as a validated diagnostic test, a cancer-treatment target, or a reason to change medication without medical advice.
From the transcript
“we're going to look at that at the same time as your blood sugar”
“the higher you are above .5, the better the result”
“you could have just checked this first thing in the morning for 5 days”
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