Related Episodes for How Social Media Reshapes Attention and Reward

“Dr. Patrick begins with a prospective Finnish cohort in which men reporting four to seven sauna sessions per week had lower dementia and Alzheimer's disease incidence than men reporting one session. The study is observational, male-only, and cannot prove that sauna caused the lower risk.”

Alcohol, in particular, can have negative effects on a breastfed infant, including altered sleep patterns, decreased milk intake, and impaired motor development (https://link.springer.com/article/10.1007/s00216-010-3681-0), among others.

“Bright light exposure has a profound effect on regulating the circadian system in humans. Dr. Panda and colleagues discovered that melanopsin — a light-sensitive protein found in specialized cells of the eye — responds to blue light and synchronizes the body's day/night cycle.”

“In a six-month trial of adults with peripheral artery disease, a flavanol-rich cocoa beverage improved six-minute walking distance measured 2.5 hours after dosing. In older adults with mild cognitive impairment, higher-flavanol cocoa improved selected verbal-fluency and executive-function tests over eight weeks.”

“Reducing inflammation may be beneficial for a variety of physical and mental conditions. In this clip, Wim Hof shares his personal story that led to his passionate pursuit of how we can harness the body's innate ability to heal itself.”

“Other hormetic responses to cold exposure include increased production of PGC1-alpha, a protein that promotes mitochondrial biogenesis, the production of new, healthy mitochondria, and the activation of brown fat – a phenomenon once thought to occur only in newborns, but now known to occur in adults, especially after cold exposure.”

“The most compelling human signal appears when the brain is under acute strain. In a randomized crossover study, a single dose of 0.35 grams per kilogram during 21 hours of sleep deprivation changed cerebral energy metabolites and preserved selected measures of cognitive performance.”

“A recent meta-analysis also found small benefits in selected cognitive domains, including memory and processing speed, with responses that may depend on age, diet, baseline stores, stress, dose, and the cognitive test used.”

“A separate six-week randomized study in 30 healthy young adults found that neither 10 nor 20 grams per day improved the tested cognitive outcomes compared with placebo. The result is an important counterweight to the acute sleep-deprivation experiment.”

“Acute stress may create a different context. In a double-blind crossover study of 15 adults undergoing 21 hours of sleep deprivation, a single 0.35-gram-per-kilogram dose changed brain high-energy phosphate measures and improved selected cognitive outcomes.”