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Rapamycin extends mouse lifespan 9–14%
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AMA #6: Eye Health, Why We Yawn & Increasing Motivation — Whalespan

Content›Video›AMA #6: Eye Health, Why We Y…

AMA #6: Eye Health, Why We Yawn & Increasing Motivation

Andrew Huberman36m · 2023-04-27

Claims Made

52

Claims Supported

48

Support Rate

92%

Support rate

48 of 52 claims supported

48 supported4 partial / not

Claims from this content

37

✓Well SupportedOutdoor activities like hiking, playing sports, or taking walks count towards the recommended two hours of daily outdoor time for eye health benefits.✓Well SupportedLack of smooth pursuit stimulation from daily life leads to a decline in smooth pursuit mechanisms and vision.✓Well SupportedIndividuals with myopia should spend time outdoors without glasses, especially in morning sunlight, and gradually reduce their prescription.✓Well SupportedStaying inside in a dimly lit room and performing near tasks increases the risk of nearsightedness 16-fold compared to children who go outside.Well Supported

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A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

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Excessive close viewing, particularly during development up to the mid-20s, can cause the eyeball to change shape and contribute to myopia.

✓Well SupportedAim for at least 10 minutes of viewing objects further than 10 feet away for every 30 minutes of close-up viewing to mitigate myopia.

✓Well SupportedRed light exposure early in the day helps metabolically active cells in the back of the eye replenish ATP production.

✓Well SupportedNear-far vision exercises can improve eye and lens musculature and movement, enhancing vision acuity.

✓Well SupportedSupplementing with lutein, zeaxanthin, or astaxanthin may slow age-related macular degeneration and other eye diseases.

◐Partially SupportedThe benefit of outdoor time for reducing myopia risk is directly related to sunlight exposure, not just viewing distant objects.

✓Well SupportedVitamin A should be obtained from food sources rather than supplements to avoid toxicity.

✓Well SupportedChildren spending time exclusively with near objects in a visually deprived environment may develop myopia.

◐Partially SupportedExposure to sunlight, particularly at low solar angles (sunrise and sunset), does not cause skin or eye damage and is beneficial for circadian rhythm regulation.

◐Partially SupportedSupplementing with lutein may help in some cases of age-related macular degeneration.

◐Partially SupportedThe lens of the eye derives nourishment from blood flow but does not contain vasculature itself.

◐Partially SupportedMicrosaccades prevent the eyes from fixating long enough to observe the blind spot.

◐Partially SupportedThe nervous system adapts to constant stimuli, leading to a diminished perception of sensations like pressure or smell.

◐Partially SupportedRed light devices should provide light in the 650 to 720 nanometer range, be viewed from about 1.5 to 2 feet away, at a brightness that is not painful.

◐Partially SupportedExercising eye muscles, including lens movement and relaxation, is important for maintaining visual system health.

◐Partially SupportedVitamin A is essential for the phototransduction cascade.

◐Partially SupportedSufficient vitamin A and lutein from food sources like egg yolks are generally adequate for eye health and may negate supplementation needs.

◐Partially SupportedA healthy diet with sufficient vitamin A and lutein from food, combined with avoiding smoking, is recommended for maintaining vision.

◐Partially SupportedLiver is a food source rich in vitamin A and other beneficial compounds.

◐Partially SupportedSome individuals with mild vision impairment may improve vision by avoiding corrective lenses and engaging in visual exercises and adequate nutrition.

✕Not SupportedPrism lenses may lead to progressive weakening of eye muscles and increased deviation over time.

◐Partially SupportedBehavioral tools such as near-far focus, smooth pursuit, adequate nutrition including lutein, vitamin A, zeaxanthin, astaxanthin, two hours of sunlight exposure, and deliberate red light exposure can help offset vision loss and potentially improve vision.

◐Partially SupportedOpening a window for natural light exposure to the eyes can help trigger the activity of intrinsically photosensitive melanopsin and retinal ganglion cells, which is beneficial for offsetting or reversing vision loss.

◐Partially SupportedThe ability to bring an object into sharp focus at close range varies based on the health of the neural retina, refractive errors, and interpupillary distance.

◐Partially SupportedThe typical dosage explored in studies for lutein is 10 to 20 milligrams per day, with some individuals using higher doses of 20 to 30 milligrams per day.

◐Partially SupportedSunlight exposure activates melanopsin and intrinsically photosensitive retinal ganglion cells, regulating circadian rhythm, mood, focus, alertness, and visual function.

◐Partially SupportedLutein in egg yolks may help with age-related macular degeneration.

◐Partially SupportedLutein, zeaxanthin, and astaxanthin are xanthins found in fruits like blueberries that can be supplemented and may benefit conditions like age-related macular degeneration.

◐Partially SupportedViewing objects at a distance for several hours per day is important for maintaining or improving vision.

◐Partially SupportedSupplementation with lutein, zeaxanthin, or astaxanthin shows a slight but robust offset for age-related macular degeneration progression.

◐Partially SupportedExcessive near-vision viewing can exacerbate myopia.

◐Partially SupportedDiscussing eye exercises with an ophthalmologist or optometrist may offer a way to overcome eye deviation issues without the need for prism lenses.

◐Partially SupportedIn farsightedness, the eyeball shortens, causing the visual image to focus behind the retina.