Topic Guide
What Is Cognitive function?
Cognitive function is a subject covered in depth across 2 podcast episodes in our database. Below you'll find key concepts, expert insights, and the top episodes to listen to — all distilled from hours of conversation by leading experts.
Key Concepts in Cognitive function
Exercise snacks
Short bursts of unstructured vigorous movement, typically 1-3 minutes in duration, performed multiple times throughout the day. This episode highlights that accumulating just 9 minutes of these daily is associated with substantial reductions in all-cause, cancer, and cardiovascular mortality, demonstrating their powerful impact on health outcomes.
Post-prandial inflammatory response
The immune system activation and subsequent inflammation that occurs after consuming certain meals, particularly those high in refined carbohydrates and saturated fats. Dr. Patrick explains that this response can involve lipopolysaccharide (LPS) leakage from gut bacteria into the bloodstream, contributing to fatigue, mood disturbances, and the initiation of atherosclerosis.
Metabolic switch (ketogenesis)
A physiological state where the body shifts from primarily using carbohydrates for fuel to burning fatty acids and producing ketone bodies, which typically occurs after liver glycogen stores are depleted. This episode frames it as a beneficial state induced by intermittent fasting or intense exercise, leading to cleaner energy production, reduced oxidative stress, and the activation of growth factors like BDNF in the brain.
Visceral fat
Deep adipose tissue that accumulates around internal organs in the abdominal cavity, distinct from subcutaneous fat. This episode identifies visceral fat as metabolically active and a secretor of inflammatory compounds, strongly linked to insulin resistance, increased risk of early death (double the risk), and a 44% higher chance of various cancers, even in individuals who appear lean.
Aphasia
Aphasia is a language disorder caused by damage to the brain, typically on the left side, that affects a person's ability to communicate. Bob Woodruff experienced aphasia after his brain injury, leading to difficulty recalling words and sometimes creating new ones, necessitating a long recovery process of relearning language.
Traumatic brain injury (tbi)
A TBI is a complex injury to the brain that can result from a severe blow or jolt to the head. Bob Woodruff suffered a severe TBI from an IED blast in Iraq, which caused his brain to swell and required the removal of part of his skull and extensive rehabilitation to regain his speech and cognitive functions.
What Experts Say About Cognitive function
- 1.Short bursts of vigorous exercise, termed "exercise snacks" (e.g., 9 minutes total per day), are associated with significant reductions in all-cause mortality (40%), cancer-related mortality (40%), and cardiovascular mortality (50%).
- 2.High-intensity exercise, even for 10 minutes, can immediately increase neuronal connections, improve executive function by 14%, and elevate plasma serotonin levels, contributing to improved impulse control.
- 3.Dr. Patrick suggests that people should be "more obsessed with training and less obsessed with protein," aiming for 1.2-1.6 grams of protein per kilogram of body weight, as excessive protein intake from whole foods can lead to unintended caloric surplus.
- 4.Processed carbohydrates and saturated fats, especially without a fiber matrix, can trigger a post-prandial inflammatory response by promoting lipopolysaccharide (LPS) leakage from the gut, which contributes to fatigue, depression, and atherosclerosis.
- 5.Visceral fat, the deep fat surrounding internal organs, is highly metabolically active and inflammatory, posing double the risk of early death and a 44% higher chance of cancer, and can accumulate rapidly even in lean individuals.
- 6.Intermittent fasting can serve as both a behavioral tool for caloric deficit and a metabolic switch to ketogenesis, offering benefits like clean energy production, reduced oxidative stress, and activation of brain-derived neurotrophic factor (BDNF).