Tools

Used to increase blood flow to the scalp and support stem cell and melanocyte populations; discussed as a blood-flow-based approach, not a robust standalone regrowth method.

Platelet-rich plasma injections into the scalp to try to offset hair loss or reverse it by encouraging nutrient delivery and possibly via the needle/inflammation effect. Described as expensive, transiently successful, and not sufficiently supported by clinical data to recommend strongly.

Mechanical scalp treatment using rollers or stamps with needles ranging from 0.5 mm to 2.5 mm; host notes 1 mm to 2.5 mm seems more effective than shorter lengths. Can reactivate semi-quiescent stem cells, improve hair growth, and works especially well in combination with other treatments. Can cause pain, bleeding, and inflammation.

Botulinum toxin injections into the scalp to relieve scalp tension and potentially improve blood flow to the follicle niche. Must be done by a skilled practitioner; effects wear off and require repeated treatments. Efficacy for hair loss is not yet clear.

Can be used to monitor whether you are in zone 2 cardio very precisely.

Used to assess resting-state functional connectivity and changes in brain-network activation before, during, and after MDMA exposure.

Use eye protection during debris-risk work such as metal grinding, gardening, sanding, sawing, woodshop work, and similar activities; regular glasses may help, goggles are better, and safety goggles are recommended for higher-risk tasks.

Use commercially available eyelid cleaning pads to lightly clean the eyelashes.

Use over-the-counter sterile saline solution to rinse the eye if something is in it; do not use seawater or pool saltwater.

Use artificial tears to rinse the eye or relieve dry eye. Preserved and non-preserved versions are safe for eye use; for most dry eye, regular over-the-counter drops are sufficient, but if using more than a couple drops regularly, switch to preservative-free single-use vials because preservatives can irritate and inflame the ocular surface.

Use reading glasses for presbyopia rather than delaying correction; examples given include +1.5 readers now and +2.0 readers in a few years.

In some children, a small plus lens may be used to reduce the effort of turning the eyes inward during near work.

Special athletic training goggles that intermittently black out vision can be used to train performance under reduced visual information; examples given include blacking out vision for one-thirtieth, two-thirtieths, or three-thirtieths of every second.

Contact lenses can provide higher quality vision than glasses for some people by correcting higher-order aberrations, but they alter tear dynamics and oxygen diffusion and may become less tolerable with age. Prefer daily disposable contacts over two-week or four-week lenses because they are safer and avoid cleaning-related infection risk, despite higher cost.

Use eyeglass lenses that block UV light; guest states UV blocking is standard in eyeglasses and beneficial for protecting eyes from cataract formation and other UV-related damage.

Photochromic glasses that darken in UV light can be used outdoors; they react specifically to UV wavelengths.

LASIK reshapes the cornea to correct refractive errors and can sometimes produce better-than-20/20 vision; best considered after prescription has been stable for years and generally avoided in people with significant dry eye.

For advanced or hard-to-control dry eye, ask an eye care provider about serum tears made from the patient's own blood serum diluted for eyedrop use.

Use prescribed glaucoma eye drops to lower intraocular pressure and slow progression of optic nerve damage and vision loss, including in people whose starting pressure appears normal.

Selective laser trabeculoplasty (SLT) is a benign, very safe, non-invasive laser procedure that can be used as a first-line glaucoma treatment and may have advantages over eyedrops.

Scale is a blunt instrument, but if someone is extremely overweight, Tim says they can use the scale to track progress.

Use vaginal dilators to help relax tight pelvic floor muscles.

Use penile Doppler ultrasound to assess blood flow, including peak systolic velocity for arterial inflow and end diastolic velocity for venous outflow, when evaluating erectile dysfunction.

Use clitoral Doppler ultrasound to assess genital blood flow when evaluating female sexual dysfunction.

Use a wider bike seat without a nose to reduce genital numbness and possible pelvic floor or sexual issues from cycling; avoid seats with cutouts because mechanics data suggest they increase pressure around the opening.

Use an older separate phone or device loaded with music or audio but without texting or outside communication to avoid distraction during exercise.

Use a phone that allows texting, calls, maps, and similar functions but does not have social media apps.

Intravenous NAD infusion at a facility or via a company that comes to your house; he has used 500–1,000 mg, especially when feeling run down or post-illness; recommends doing it earlier in the day due to anecdotal sleep disruption later in the day; slower drip rate can improve tolerability; often uncomfortable and some people use anti-nausea medication.

Avoid sauna exposure when trying to protect sperm production because external heat to the scrotum can impair testicular function; sperm production is more heat-sensitive than testosterone production.

Use a bicycle saddle designed to reduce pressure on nerves and blood vessels between the sit bones to lower risk of numbness and sexual dysfunction.