NatWonk – Dr Bier’s Research Reviews – Page 6

Menopausal hormone therapy and the female brain: Leveraging neuroimaging and prescription registry data from the UK Biobank cohort

December 11, 2025

| Medications - General Pharmaceuticals, Neurological & Cognitive Health

Comment: While the finding that current MHT use is associated with concerning neuroimaging markers (accelerated Brain Age Gap, smaller hippocampus) compared to never-users warrants attention, there’s another important aspect – the lack of a statistically significant difference between specific formulations—namely oral versus non-oral (topical/vaginal) administration and estrogen-only versus combined HRT. It is becoming commonly accepted […]

Association Between Low-Density Lipoprotein Cholesterol-Lowering Genetic Variants and Risk of Type 2 Diabetes: A Meta-analysis

December 10, 2025

| No Comments

| Cardiovascular Health, Metabolic Health

Comment: This study is a potential critical piece of the puzzle because it bridges the gap between clinical observation and biological causality. We have known for some time from major clinical trials that statin therapy is associated with a slightly increased risk of developing type 2 diabetes. However, a lingering question has always been whether […]

Grape seed powder improves renal failure of chronic kidney disease patients

December 9, 2025

| No Comments

| Renal Health

Comment: The finding that 2 g/day of Grape Seed Extract (GSE) resulted in a 32.67% decrease in proteinuria and a decrease in creatinine are definitely clinically relevant outcomes. Furthermore, the significant improvements in antioxidant status (e.g., almost doubling Catalase activity) provide a plausible mechanism for the renal benefits. The major issue is the massive risk […]

Time-course study of different innate immune mediators produced by UV-irradiated skin: comparative effects of short and daily versus a single harmful UV exposure

December 6, 2025

| No Comments

| Immune System, Ultraviolet - Sun Exposure

Comment: I admit I love my UV, especially since moving back to New England – I have 3 apps on my phone so I know when it’s peak time to go outside. I also recognize that I have skin that tans and rarely burns, whereas other people don’t. It’s always been suspect to me that […]

Platelet-Rich Plasma Injection for Thumb Carpometacarpal Joint Osteoarthritis

December 5, 2025

| No Comments

| Musculoskeletal Health

Comment: I have used PRP for thumb joint pain and seen it been very helpful. This trial paints a very hopeful picture for the use of PRP for thumb CMC OA treatments. While we definitely need larger controlled trials to confirm these results, the initial data—specifically the high rate of moderate-to-excellent improvement—indicates that PRP could […]

A six-year longitudinal study identifies a statin-independent association between low LDL-cholesterol and risk of type 2 diabetes

December 2, 2025

| No Comments

| Metabolic Health

Comment: This study reinforces a critical physiological reality often obscured by the aggressive ‘lower is better’ paradigm for lipids. While the cardiovascular benefits of managing dyslipidemia are well-established, we frequently ignore the risks of hypocholesterolemia, such as in this study. Beyond the diabetes signal identified here, very low LDL (<70 mg/dL) has been consistently linked […]

Tryptophan Intake in the US Adult Population Is Not Related to Liver or Kidney Function but Is Associated with Depression and Sleep Outcomes

November 28, 2025

| No Comments

| Sleep

Comment: It’s Thanksgiving, and I figured it would be fun to see if there was any actual research on turkey and sleepiness. There isn’t, but I came across this interesting study showing that tryptophan is associated with both improved sleep and decreased depression symptoms. Despite it’s reputation, turkey is actually about equivalent in tryptophan to […]

Cardiac Troponins and Cardiovascular Disease Risk Prediction: An Individual-Participant-Data Meta-Analysis

November 26, 2025

| No Comments

| Cardiovascular Health

📝Comment: This meta-analysis represents the highest level of evidence for a prognostic biomarker, using Individual-Participant-Data (IPD) analysis across 15 high-quality prospective cohorts. While the absolute increase in risk prediction (C-index) is modest, high-sensitivity troponins are an independent prognostic factor for cardiovascular disease that provide greater predictive gains than traditional inflammatory markers like C-reactive protein (CRP), […]

High-Sensitivity Cardiac Troponin I for Risk Stratification in Older Adults

November 26, 2025

| No Comments

| Cardiovascular Health

Comment: Although we are all used to seeing troponin used to rule in or out a heart attack, this study shows it can be used for prognostic chronic risk stratification. It shows there is a population of older, asymptomatic people who, despite having no history of MI or overt CVD, are walking around with a […]

Diet and Risk for Incident Diverticulitis in Women : A Prospective Cohort Study

November 25, 2025

| No Comments

| Miscellaneous

Comment: A more recent study, this one was in women and showed that nuts and this time seeds are perfectly safe for diverticulitis. Corn actually decreased the risk. Summary: 🎯 Clinical Bottom Line This large prospective cohort study provides compelling evidence to refute the historical dogma that women should avoid “particulate” foods—specifically nuts, seeds, corn, […]