| CONNOR'S HEALTH NOTES Two of the Three Can Be Measured Inflammation and glycation have standardized blood tests with published thresholds; the third thing usually named alongside them has no validated clinical assay at all, and the difference decides what can be tracked. Connor Hill · InsightfulWord · October 02  Some symptoms are not a matter of slow decline and should not be investigated at leisure. Unexplained weight loss, a fever that persists, night sweats, new or worsening breathlessness, blood where there should be none, a lump that is new or changing, and persistent pain that wakes a person from sleep each warrant a prompt appointment rather than a dietary adjustment. Nothing below is a substitute for that assessment, and no prescribed medication should be started, stopped or changed except with the prescribing clinician. The framing worth examining is the one that names a small number of hidden processes as the cause of aging and offers to address them at home. Three are usually named in some combination: chronic inflammation, glycation, and oxidative stress. All three are real biology. They are not equally measurable, and that is the practical distinction. Inflammation has a standardized blood test. High-sensitivity C-reactive protein is measured in milligrams per liter, has published risk categories, and is used in cardiovascular risk discussion. Glycation has one too. Glycated hemoglobin reflects the average attachment of glucose to hemoglobin over roughly the preceding three months, is standardized internationally, and is the basis of a diagnosis. Oxidative stress has no equivalent. Research assays exist for various oxidation products, but no single measurement has been validated and standardized for routine clinical use, which means there is nothing ordinary care can track. That asymmetry does most of the work in these claims. Two of the three can be measured before and after an intervention; the third can be asserted indefinitely because nothing contradicts it. Which turns an unfalsifiable framing into a testable one for anyone willing to use the two tests that exist. Both are ordinary tests, ordered in ordinary appointments, and neither requires any special program or product to interpret. | What this piece checks | | Which of the commonly named aging processes have standardized clinical measurements and which do not | | | What the published thresholds mean, and the conditions that make a reading uninterpretable | | | What a supplement can and cannot be expected to move, and over what interval | | The Inflammation Marker and Its Thresholds The test is widely available, inexpensive and specific about what it means. | 🩹 Health Stat of the Day Under one, one to three, over three High-sensitivity C-reactive protein is interpreted in three bands for cardiovascular risk: below 1.0 mg/L is low risk, 1.0 to 3.0 mg/L intermediate, and above 3.0 mg/L high. A value above 10.0 mg/L reflects acute inflammation rather than cardiovascular risk and should prompt a search for a cause and a repeat test. Where a stable baseline is wanted, the lower of two readings taken at least two weeks apart is used, and testing is avoided after recent illness, injury or infection, or where another inflammatory condition is active; oral contraceptives can raise the result. Source: reference ranges summarized from the CDC and American Heart Association workshop on markers of inflammation and cardiovascular disease. | | Support or oppose: should high-sensitivity C-reactive protein be measured routinely in adults over sixty rather than only where risk is near a decision threshold? Supporters argue that the test is cheap, that an elevated value identifies people whose risk the standard equations understate, and that a number people can watch changes behavior more than advice does. Opponents answer that most elevated readings reflect something transient or unrelated, that each one triggers repeat testing and anxiety, and that the variables already in the risk equations capture nearly all of the useful signal. Which is the better rule? Hit reply — one line is enough. | C-reactive protein is produced by the liver in response to inflammatory signaling, and the high-sensitivity version of the assay detects the low concentrations relevant to long-term risk. Its chief virtue is that it is standardized. A result from one laboratory means the same as a result from another, which is what makes before-and-after comparison possible. Its second virtue is that it was validated in large prospective cohorts rather than proposed on mechanism alone, which is why a threshold exists at all. Markers without that history have no bands because nobody has established what a band would mean. Its chief limitation is that it is non-specific. Infection, injury, arthritis, periodontal disease, obesity and recent vigorous exercise all raise it, and the test cannot say which. That is why a single reading means little and why the protocol specifies two readings separated by at least two weeks, with the lower one taken as the baseline. A value above ten points away from cardiovascular interpretation entirely and toward an active process that needs identifying. Individual variation matters as much as the thresholds. A person's own stable value is more informative than the band it falls in, which is the argument for establishing a baseline while well rather than measuring once during a bad week. Interpreted carefully, it is a useful number. Interpreted as a verdict on aging, it is being asked a question it was not designed to answer. The Glycation Marker and What It Covers The second measurement is better known and is misunderstood in a different way. Glycated hemoglobin reports the proportion of hemoglobin molecules carrying attached glucose, which accumulates over the lifespan of a red blood cell. That gives an average over roughly three months, which is its advantage over a single glucose reading and also its limitation, since it conceals the variability within that window. Conditions affecting red cell turnover distort it. Anemia, recent blood loss, transfusion, pregnancy and certain hemoglobin variants all change the relationship between the result and actual glucose exposure. Standardization is the quiet achievement behind this test. An international program aligned assays so that a result means the same thing across laboratories and countries, and that alignment is what allows a single diagnostic threshold to exist at all. Where that is suspected, alternative measures exist, and continuous glucose monitoring answers the variability question the three-month average cannot. Glycation beyond hemoglobin — the broader chemistry of sugars attaching to proteins throughout the body — is genuine and is studied, but it is not what this test reports. Which means a claim about glycation in general is being supported, at best, by a measurement of one specific protein in the blood. Why the Third Is Different Oxidative stress occupies a different epistemic position from the other two, and the reason is methodological rather than biological. Oxidation happens continuously, is necessary to normal metabolism, and causes damage when it exceeds the systems that contain it. None of that is in dispute. The measurement problem is that the reactive species themselves are short-lived, so assays target downstream products, each of which has its own confounders and its own analytical difficulties. Sample handling is part of the problem. Several candidate markers degrade or form during collection and storage, so a measured value can reflect the laboratory's procedure as much as the person's biology. No single marker has been standardized across laboratories for routine clinical use, which is why no ordinary panel reports one and no guideline sets a threshold. The practical consequence is asymmetry. A claim about inflammation or glucose exposure can be checked against a number; a claim about oxidative stress cannot be checked at all in ordinary care. Diet complicates it further in a way worth stating. Foods rich in the relevant compounds have shown benefits in observational work that isolated high-dose supplements have repeatedly failed to reproduce, which suggests the food rather than the extracted compound is doing the work, or that something else about the people eating it is. Large antioxidant supplementation trials are worth naming here, because several found no benefit and some found harm in specific populations, which is why guidance shifted away from high-dose supplementation. That history is the reason the mechanism being plausible is not the same as the intervention working, and it is why the two measurable markers deserve more attention than the unmeasurable one. | | Worth stating plainly — what a before-and-after number can and cannot show Two readings of a standardized marker can show that a value moved. They cannot show why, because inflammation markers respond to infection, injury, weight change, sleep, dental disease and exercise, and a glycated hemoglobin result responds to everything affecting glucose over three months. Attributing a change to one new item added to a routine requires holding the rest constant, which almost nobody does. Nothing here is a diagnosis or medical advice, no product is endorsed, and persistent or unexplained symptoms call for an appointment rather than a supplement. | What a Measured Approach Would Look Like Six steps turn an unfalsifiable framing into something a person can actually test. A baseline for each measurable marker, taken when nothing acute is going on, with the inflammation marker repeated at least two weeks later. A written note of what else changed in the same period — sleep, weight, activity, dental work, illness — since those are the usual explanations. One change at a time, held long enough to matter: a glycated hemoglobin result cannot respond meaningfully in under three months. A repeat of the same test at the same laboratory, because assay differences between laboratories are larger than many of the changes being looked for. A conversation about what the numbers already indicate, since an elevated result has a differential diagnosis rather than a lifestyle answer. A check on whether anything else was already explaining the result, since an elevated inflammatory marker in an older adult has a list of ordinary causes that is worth working through before anything is added. And an honest ranking of effect sizes, because the measured effects of sleep, activity, weight and tobacco on both markers exceed anything demonstrated for a supplement. | The short checklist | 1 | Ask which of the named processes has a standardized test before accepting a claim about it. | | 2 | Take two inflammation readings at least two weeks apart and use the lower as the baseline. | | 3 | Treat any value above ten as a reason to look for a cause, not as a risk score. | | 4 | Allow a glycated hemoglobin measurement a full three months before reading anything into a change. | | 5 | Use the same laboratory for the before and after, since assay differences exceed small real changes. | | 6 | Change one thing at a time, and write down everything else that changed anyway. | | Cost belongs in the frame too. Both tests are inexpensive and widely available, and in most cases a clinician will order them where there is a reason, which makes this one of the few areas where checking a claim costs very little. Attribution deserves one further caution. A video, a book or a recommendation attributed to a public figure is a claim about who said something, and it is separate from whether the content is correct — the second question can be answered without settling the first. The composite point is that of the processes usually named as the hidden causes of aging, two have standardized measurements with published thresholds and known confounders, one has no validated clinical assay at all, and the honest version of any such claim is the one that specifies which number it expects to move and by when. | The number, not the narrative Inflammation reads below 1, between 1 and 3, or above 3 milligrams per liter, with anything above 10 pointing elsewhere entirely. Glycated hemoglobin averages three months of glucose exposure. The third process named alongside them has no standardized clinical test. When three internal enemies are described, which of them can be measured before and after? Connor Hill reads every reply. | Sources checked Verified October 01, 2026 Connor Hill · InsightfulWord | 