This 2023 rodent study from Dr. Michael Skinner’s labs at Washington State University investigated epigenetic transgenerationally inherited differential DNA methylation regions (DMRs). I’ll focus on a paradigm shift that enabled some of this study’s findings: “The current study was designed to assess if morula embryos escape the erasure of DDT-induced transgenerational sperm DMR methylation. Observations … Continue reading Paradigms determine findings
This 2022 human study investigated another type of aging clock: “The glycan clock of age, based entirely on immunoglobulin G (IgG) N-glycans, can predict biological age with high accuracy. Unlike DNA methylation, glycosylation of IgG does not predict chronological age with high accuracy. Heritability analysis of plasma glycans revealed that the majority of traits have … Continue reading Blinded by their paradigm?
Dr. Harold Katcher increased interviews to coincide with release of his book this month. Here’s one in four parts that provides highlights of his rejuvenation research progress: Previously curated papers of his work include: A rejuvenation therapy and sulforaphane; An environmental signaling paradigm of aging; and Reevaluate findings in another paradigm.
It’s challenging for people to change their framework when their paychecks or mental state or reputations depend on it not changing. I’ll use The hypothalamus and aging as an example. This review was alright for partial fact-finding up through 2018. Its facts were limited, however, to what fit into the reviewers’ paradigm. The 2015 An … Continue reading Reevaluate findings in another paradigm
To follow up A rejuvenation therapy and sulforaphane, the study’s lead laboratory researcher – Dr. Harold Katcher – provided evidence for an environmental signaling paradigm of aging in this 2015 paper: “The age-phenotype of a cell or organ depends on its environment and not its history. Organ dysfunction is not the cause of aging, but … Continue reading An environmental signaling paradigm of aging
This 2018 review presented evidence that: “For half a century, a high level of total cholesterol (TC) or low-density lipoprotein cholesterol (LDL-C) has been considered to be the major cause of atherosclerosis and cardiovascular disease (CVD), and statin treatment has been widely promoted for cardiovascular prevention. However, there is an increasing understanding that the mechanisms … Continue reading Disproving the cholesterol paradigm
This 2019 article questioned the paradigm of determining substance carcinogenicity: “In the absence of robust epidemiological data, the final arbiter of whether a chemical is considered to be a carcinogen or not has been based on the outcome of long-term rodent bioassays. This approach is incompatible with the current knowledge of the etiology of cancer. … Continue reading Stuck in the wrong paradigm
This 2018 commentary from the American College of Emergency Physicians by 7 physicians discussed the harm that will result from imposing a mandatory paradigm of sepsis treatment. I’ll quote sections that mention evidence: “These metrics [for pneumonia treatment] had little evidentiary basis but led to an institutional-fostered culture of overdiagnosis and overtreatment. Have we learned … Continue reading The arrogance of a paradigm exceeding its evidence
This 2018 German human study’s last sentence was: “Additionally we found an association between DNAm [DNA methylation] age acceleration and rLTL [relative leukocyte telomere length], suggesting that this epigenetic clock, at least partially and possibly better than other epigenetic clocks, reflects biological age.” Statements in the study that contradicted, qualified, and limited the concluding sentence … Continue reading Hijacking the epigenetic clock paradigm
This 2018 US government rodent study used extreme dosages to achieve its directed goals of demonizing nicotine and extolling the biomarker paradigm: “This study examined whether adolescent nicotine exposure alters adult hippocampus-dependent learning, involving persistent changes in hippocampal DNA methylation and if choline, a dietary methyl donor, would reverse and mitigate these alterations. Mice were … Continue reading Going off the rails with the biomarker paradigm
The principal way science advances is through a principle Einstein expressed as: “No amount of experimentation can ever prove me right; a single experiment can prove me wrong.” The scientific community and public should be satisfied that the scientific process is working well when hypotheses are discarded due to nonconfirming evidence. Researchers should strive to … Continue reading A disturbance in the paradigm of child abuse
This 2018 German review subject was retroviruses: “Initial indications that retroviruses are connected to neoplastic transformation were seen more than a century ago. 43% of the human genome is made up of such elements and 8% of the genome is comprised of retroviruses that infected human ancestors, entering cells of the germ line or proliferating … Continue reading An example of researchers changing their field’s paradigms
This 2018 German human study found: “DNA methylation in a biologically relevant region of NR3C1-1F [glucocorticoid receptor gene] moderates the specific direction of HPA-axis dysregulation (hypo- vs. hyperreactivity) in adults exposed to moderate-severe CT [childhood trauma]. In contrast, unexposed and mildly-moderately exposed individuals displayed moderately sized cortisol stress responses irrespective of NR3C1-1F DNA methylation. Contrary … Continue reading What will it take for childhood trauma research to change paradigms?
This 2017 New York/Swedish rodent study subject was the epigenetic effects on the F1 children of maternal low protein diet during pregnancy and lactation: “Male, but not female, offspring of LPD [low protein diet] mothers consistently displayed anxiety– and depression-like behaviors under acute stress. Our proposed pathway connecting early malnutrition, sex-independent regulatory changes in Egr1 … Continue reading A study of perinatal malnutrition where the paradigm excluded epigenetic inheritance
This 2017 review laid out the tired, old, restrictive guidelines by which current US research on the epigenetic effects of stress is funded. The reviewer rehashed paradigms circumscribed by his authoritative position in guiding funding, and called for more government funding to support and extend his reach. The reviewer won’t change his beliefs regarding individual … Continue reading How one person’s paradigms regarding stress and epigenetics impedes relevant research
Surface Your Real Self 