weight loss

Nutritional Ketosis

The difference between urine ketone testing and blood ketone testing is simple. The urinalysis strips will only measure dietary ketones – i.e., ketones which are produced as a result of the breakdown of fat in our digestive system. When the fat content of our food becomes adequate and the carbohydrate levels fall, the body produces ketones and they appear in our urine when they’re unused.

Blood ketones, however, are only shown in quantities above 1.5mmol when the body is releasing fat from its current stores of body fat. This indicates usage of stored fat for fuel as well as indicates the production of ketones from dietary sources. This is a measurement of nutritional ketosis, i.e., ketosis as a result of both intake of dietary fat and use of stored reserves of fat for fuel.

Yesterday, for the first time, I measured my blood ketones using my wife’s new glucometer/ketone meter. I’ve measured my blood sugar a few times and while I’m not thrilled with where it is, it’s not bad. When I measured my blood ketones yesterday, however, I found I was at 2.2mmol, which is a fantastic measure of how deeply my day’s meals kept me in ketosis. And above 2.0mmol is good indeed.

The drawback is, I can’t do this every day. In fact, ideally, I’d be doing this a few hours after every meal. But at about $5/strip plus shipping … yeah, I don’t think so. So, I have to suffice with trying to make a correlation between weight loss and blood sugar at best. Or just continue to keep an eye on my macronutrient intake and levels. Nevertheless, I can be happy to know our lifestyle, at least insofar as yesterday’s meals are concerned, has successfully moved us into ketosis (my spouse had levels of 2.0mmol) and we can be sure there will be weight loss, slow and steady, so long as we maintain those balances.

Down to 238.6 today, and looking forward to today’s meals.


3 thoughts on “Nutritional Ketosis

  1. thepotatowife says:

    I know the blood monitors detect a more accurate level, but keto sticks were developed for detecting ketones in urine for diabetics long before they were used by low carbers. I don’t agree that they merely detect ketones from dietary fat alone. That would mean that the ketone spill for a diabetic experiencing ketoacidosis was from their food intake rather than a faulty metabolic process.

    Well, there’s truth in what you say, but remember what ketoacidosis is and the levels of detection being watched for. Still, you’re right, and while the measurement of ketones in urine for diabetics maybe more critical to their overall health, it’s not sufficient for the purposes of diet. I do acknowledge I might be misinformed, though. My wife would know more — she’s read far more on this than I.

    Granted, the new monitors are able to detect a more accurate level and I am really pleased for you that it is giving you the information you are seeking. The hard work and dedication that it takes to work the levels you are aiming for are somewhat easier getting a positive feedback from the numbers on the monitor.

    Oh, I’ve only used it the few times to measure BG levels and only once for ketone levels. And knowing that level that day didn’t really help. We’d have to measure daily for that, and we simply can’t afford it right now. We’ll have to see.

    You haven’t mentioned the BG numbers, what’s going on with that? Are you staying under 100?

    I honestly don’t know. When I measure, it’s typically under 100, yes, but I don’t measure often enough to really tell.

  2. The sticks measure a different ketone body than the meter does. The blood ketones are more accurate than the urine ones. For non-diabetics, the sticks mostly measure dietary ketones, and will register that you’re “in ketosis” even if your blood ketones say you’re NOT in ketosis.

    I have a few websites that can give more – and way better! – information:



    Thanks, love!

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