Related Episodes for Day–night patterns of light exposure

“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.”

“Activity in the default mode network (DMN), a group of interacting brain regions implicated in self-related thinking, rumination, and depression, is suppressed by psilocybin and other psychedelic substances.”

“While some forms of Parkinson's disease are genetic, most cases involve a complex interaction between genetic and environmental risk factors. In the early 1980s, intravenous drug users inadvertently injected a contaminated drug and developed parkinsonian symptoms overnight.”

“Patients assigned to supervised exercise during neoadjuvant chemoradiation, followed by continued activity before surgery, were more likely to achieve a complete or near-complete pathological response than those receiving usual care.”

“One of the mechanisms behind the beneficial effects of exercise is its ability to induce autophagy in skeletal muscle and, potentially, other organs. In this clip, Dr. Guido Kroemer describes the anti-diabetes and anti-obesity effects of exercise-induced autophagy.”

“The physical activity guidelines and estimates on how much activity we need are heavily based on self-reported activity, which is useful but imperfect: people remember going for a run, but they forget the short, intense bursts in daily life like sprinting up stairs, chasing kids, and running to catch a bus.”

“Dr. Patrick describes increased shear as a possible way vigorous exercise can damage fragile circulating tumor cells; this is a proposed mechanism, not proof that a workout eliminates metastasis or treats an established tumor.”

“Wearable-device research in more than 25,000 adults who reported no structured exercise linked about three one- to two-minute vigorous bouts per day with substantially lower all-cause, cardiovascular, and cancer mortality.”

“Exercise can improve blood pressure, insulin sensitivity, triglycerides, and fitness, but someone with high ApoB or LDL may still need targeted diet changes and clinician-guided lipid-lowering treatment. Mood is another major benefit.”