Audit a URL →

Sign in Sign up free

Loading…

Weekly · Sunday Morning

Five longevity claims.
Worth your time.
Every Sunday.

Last Sunday

Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

5 audits·1 verdict change·0 affiliate links·Every Sunday

Joining 1,247 readers — founders, MDs, and longevity-obsessed people who fact-check their own health decisions.

Browse

Decisions Claims Content Creators

Product

Audit a URL Sunday roundup API (soon)Pricing

About

FAQ Methodology Editorial Standards Corrections Press & brand RSS feed

Legal

Terms of Service Privacy Policy DMCA

Finally, something serious in this space.
Because we actually read the papers.

© 2026 Whalespan. Independent, evidence-graded longevity.

Protocols to Improve Vision & Eyesight | Huberman Lab Essentials — Whalespan

Content›Video›Protocols to Improve Vision …

Protocols to Improve Vision & Eyesight | Huberman Lab Essentials

Andrew Huberman30m · 2025-04-24

Claims Made

51

Claims Supported

47

Support Rate

92%

Support rate

47 of 51 claims supported

47 supported4 partial / not

Claims from this content

43

✓Well SupportedThe contrast between blue and orange/red/pink light wavelengths in morning and evening sunlight is crucial for signaling the body's understanding of time of day.✓Well SupportedLack of smooth pursuit stimulation from daily life leads to a decline in smooth pursuit mechanisms and vision.✓Well SupportedThe young brain is highly susceptible to differences in visual input between the two eyes up to age 12.✓Well SupportedApproximately half of the brain's structure is dedicated to vision, with most visual processing occurring in the posterior cortex.Well Supported

More from Andrew Huberman

Andrew Huberman on Creatine

Huberman X thread: creatine and aging

Andrew Huberman on Morning Sunlight

Discussion

Native comments, Twitter mentions, and Reddit threads about this content — surfaced together so the conversation isn't fragmented across platforms.

M

Share your read of this content…

Posting publicly as you · linked to your social profiles

Sort by:

AV

A. Volkovreader

4h

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

NP

N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

✓

The ability to track moving objects smoothly (smooth pursuit) can be trained to improve vision.

✓Well SupportedTwo hours of daily outdoor time without sunglasses significantly reduces the probability of developing myopia.

✓Well SupportedGet sunlight in the eyes early in the day and anytime one wants to feel awake to anchor oneself in time and regulate biological functions.

◐Partially SupportedVision training involves 2-3 minutes of smooth pursuit and a few minutes of accommodation practice every other day.

◐Partially SupportedHallucinations can occur when portions of the visual system become underactive or undersimulated.

◐Partially SupportedLooking up tends to promote alertness, while looking down can have a suppressive or sedative effect.

✓Well SupportedMelanopsin retinal ganglion cells signal to the brain about the presence of light and time of day.

◐Partially SupportedEarly visual imbalances, such as even a few hours of eye occlusion in infancy, can lead to permanent changes in visual perception and pathway function if not addressed.

◐Partially SupportedStrabismus in young children should be corrected for balanced vision and brain response.

◐Partially SupportedThe primary evolutionary purpose of eyes was to communicate time-of-day information to the brain and body.

◐Partially SupportedA healthy cardiovascular system, achieved through endurance and strength training, is essential for supporting eye and brain health and vision over time.

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

◐Partially SupportedPerception of objects is not direct seeing, but rather the brain's best guess based on electrical signals arriving from the visual system.

◐Partially SupportedTake a break to relax facial and eye muscles every 30 minutes of focused work.

◐Partially SupportedMelanopsin ganglion cells regulate sleepiness, wakefulness, metabolism, blood sugar levels, dopamine levels, and pain threshold.

◐Partially SupportedNeurons within the retina are the most metabolically active cells in the body, requiring adequate blood flow for energy and nutrients.

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

◐Partially SupportedConsuming naturally occurring foods rich in vitamin A, such as dark leafy vegetables and carrots, in their raw form, can support vision.

◐Partially SupportedConsulting an ophthalmologist or neuro-ophthalmologist is recommended for severe vision problems.

◐Partially SupportedDirecting eyes upward, with eyelids open, creates a state of heightened alertness by engaging brainstem neurons that control alertness and eye muscles.

◐Partially SupportedSpending at least 10 minutes daily viewing objects over half a mile away is valuable for eyesight, keeping the lens elastic and eye muscles strong.

◐Partially SupportedIngesting super-physiological amounts of vitamin A from food sources will not necessarily improve vision beyond supporting essential functions.

◐Partially SupportedThe brain creates a sense of depth perception from two-dimensional retinal images by utilizing the slight offset between the two eyes.

◐Partially SupportedThe biochemical cascade for vision requires essential nutrients like vitamin A and carotenoids.

◐Partially SupportedAstaxanthin is structurally similar to beta-carotene and may be safer than vitamin A.

✕Not SupportedExcessive close-up focus on screens and prolonged indoor time train eyes for near vision at the expense of distance vision.

✕Not SupportedLack of distance viewing, horizons, and smooth pursuit stimulation can lead to vision deterioration.

◐Partially SupportedA home Snellen chart can be used for visual training and tracking vision performance, which can vary by time of day.

◐Partially Supported2-10 minutes of bright light exposure early in the day triggers melanopsin cells and signals the circadian clock.

◐Partially SupportedAstaxanthin has positive effects on skin elasticity, moisture, and quality.

◐Partially SupportedCovering the non-affected eye is necessary for individuals with amblyopia to improve the weaker eye.

◐Partially SupportedLooking at distant objects relaxes the eye lens, while looking at close objects requires effort.

◐Partially SupportedCertain practices can have a significant positive impact on vision, despite genetic and injury factors.

◐Partially SupportedPreserving eyesight and vision is a critical factor for enhancing quality of life, comparable in importance to the ability to move.

◐Partially SupportedThe eye's lens can dynamically adjust focus through a process called accommodation, which involves moving and changing the lens shape.

◐Partially SupportedThe eye's ability to dynamically adjust focus through accommodation can enhance eye health, improve focus for work, and increase concentration duration.

◐Partially SupportedAstaxanthin appears to increase ocular blood flow, supporting vision.

◐Partially SupportedResting the eyes by looking at the horizon or adopting a 'soft gaze' is beneficial.

◐Partially SupportedThe ability to hold visual focus on a target is critically determining of how we think.