William A. Wallace, Ph.D. (@WilliamWallace)

1/ Half the population may be functionally deficient in vitamin C—despite meeting the RDA. Recent data suggests the recommended intake is based on outdated models and ignores body weight, tissue saturation, and immune demand. Let’s break down the new research 🧵 ...

New findings reported at the American Society for Nutrition national conference link midlife coffee intake with better odds of aging well. Here’s what the 30-year study found 🧵 ...

🧵 Vitamin B12 and Cognitive Health: When Normal Isn't Enough Are "normal" Vitamin B12 levels silently harming your aging brain? New evidence challenges our understanding of what truly constitutes B12 sufficiency. ⬇️ ...

A recent study (doi: 10.1249/MSS.0000000000003420) looked at the effects of sprint duration and repetition in sprint interval exercise protocols, ensuring total sprint time and sprint-to-rest ratio (1:8) were equated. Participants: 14 healthy males (27 years old) (VO₂peak: ~47.2) Protocols: - Four...

A recent study (PMID: 37344293) Mendelian randomization (helping to reduce/eliminate things like reverse causation) suggests that habitual daytime napping is associated with 15.8 cm³ larger total brain volume (a marker of brain health and resilience against cognitive decline). This difference is equ...