Intelligent Medicine | The Best of High Tech Medicine and Alternative Modalities

Cardiologist and electrophysiologist Dr. Gregory Marcus, chair of the American Heart Association scientific statement writing group, reveals evidence on coffee/caffeine and cardiovascular health. He discusses how earlier assumptions that caffeine triggers arrhythmias are complicated by genetics, individual risk factors, and mostly observational research. Marcus reviews randomized and observational findings: the CRAVE trial showed no increase in premature atrial contractions but more premature ventricular contractions on coffee days; a trial in post-cardioversion patients found less atrial fibrillation with daily coffee. Observational data suggest lower risks of type 2 diabetes, heart attack, stroke, and AFib among coffee drinkers, while heart failure risk may be lower at low intake but higher around 4–5 drinks/day. He cautions against extrapolating benefits to energy drinks, discusses additives like sugar, touches on alcohol, cannabis, Mediterranean/DASH diets, pollution, and evolving AFib treatments, wearables, and pacing/ablation technologies.

Dr. Hoffman continues his conversation with cardiologist and electrophysiologist Dr. Gregory Marcus, chair of the American Heart Association scientific statement writing group.

Most mayos, salad dressings and chips “made with 100% avocado oil” fail test; Borderline cholesterol—will a coronary calcium scan help decide whether a statin is warranted? Aged Garlic Extract for blood pressure; Immune benefits of BWH Beta Glucan.

Low-fat dairy shown to confer no weight, cholesterol benefits over full-fat dairy; FDA and USDA to define ultra-processed foods for first time—but what are they really? Newly discovered tick-borne Bourbon virus can be fatal—but is it more pervasive than we think? Thorne supplement maker—sold 3 years ago for $700 million—acquired by Procter & Gamble for $3.8 billion. Those dark skin blotches—are they melasma, or just age spots? Is low-mercury salmon a hype? That fishy smell—does it mean your seafood is spoiled?

Managing High Homocysteine with MTHFR Variants and the Role of Vitamin C in Brain Aging: Registered dietitian nutritionist Leyla Muedin discusses MTHFR genetic variants (C677T and A1298C), their links to impaired methylation, homocysteine, SAMe, mood issues, migraines, vitamin deficiencies, and pregnancy complications, noting many people are asymptomatic and some feel worse on methylated B vitamins and do better on standard formulations. Responding to a listener with C677T, high homocysteine, and borderline methylmalonic acid, she reviews optimal homocysteine targets and outlines other causes of elevated homocysteine such as hypothyroidism/subclinical hypothyroidism, kidney failure, obesity, hypertension, diabetes, smoking, inactivity, and medications (atorvastatin, methotrexate, fenofibrate). She suggests checking these factors, considering absorption issues (intrinsic factor) for B12, and trialing SAMe and more trimethylglycine, with possible pharmacologic folate if needed. She then summarizes an observational Japanese study (n=2,044 adults >64) linking lower plasma vitamin C to reduced gray matter and weaker default mode network connectivity, and notes diet and blood sugar can affect vitamin C status.