Bryan Johnson Profile picture
Oct 22, 2024 12 tweets 6 min read Read on X
Genetically, I should be bald.

I started to lose my hair and go gray in my late 20s.

Now, at 47, I’ve got a full head of hair and ~70% of my gray is gone.

Here how I did it.. 🧵 Image
Contrary to popular belief, you can maintain your hair well into your 40s and beyond.

In 12 months, I went from a Norwood 3 to a Norwood 2. Norwood is a hair loss scale, as indicated in the image.

Here’s how I achieved these results:
Image
1. Start early:

Don’t wait for visible loss.

Many lose up to 50% of their hair before they even realize it.

The best time to work on your hair is before you start losing it. Sources (1) (2)
2. Nutrition:

Make sure you're getting adequate:

+ Protein: including collagen peptides and sufficient methionine, cyteine, and lysine in addition to taurine, to support collagen, keratin, and elastin synthesis. Ref (3)

+ Omega-3 fatty acids: for antioxidant effects and improving scalp circulation. Ref (4)

+ Key vitamins & minerals: including iron, selenium, and biotin. Ref (3)

The Blueprint stack has all of these. ↓Image
3. Customized topicals:

I use a personalized Rx formula based on my genetics to prevent and reverse hair loss. Roots byGA (5)

Here are the ingredients in my formulation: Minoxidil (7%), Cetirizine HCl (1%), Latanoprost (0.004%), Dutasteride (0.25%), Melatonin (0.1%), Caffeine (0.2%), Tretinoin (0.0125%), Vitamin D3 (1,000IU/ML), Vitamin E (10 IU/ML).

5% minoxidil is a solid budget alternative. Apply 1 mL to scalp at night or in the morning (or both), massage thoroughly.

Note that some people experience side effects with a topical such as itchy skin, headaches etc. so monitor for those.
4. Red light therapy:

Six minutes a day and you can be doing your morning routine as you wear it. A study on 44 males (age 18-49) showed that treatment with 655nm laser cap for 25 min every other day for a duration of 16 weeks resulted in a 39% increase in hair growth compared to placebo. Ref (6)

An affordable Blueprint red light cap coming soon.
5. Oral minoxidil:

I take 3.75 mg a day. I started with 2.5 mg and evaluated for side effects.

In a double-blind, placebo-controlled randomized clinical trial involving 90 men with androgenetic alopecia AGA, oral minoxidil (5 mg daily) was found to have similar efficacy to topical minoxidil (5% solution applied twice daily) after 24 weeks.Ref (7)

Oral minoxidil is generally considered safe at low doses, but it can have side effects such as hypertrichosis (excessive hair growth) and headaches.Image
When starting any new hair regimen:

+ Start slow
+ Introduce 1 product at a time
+ Monitor closely for side effects
+ Give each addition 3 months to show results
+ 5% minoxidil alone is sufficient for many
+ Consider personalization based on your genetic profile, health, diet type and nutritional condition to reverse any deficiencies (e.g. omega3, protein...) revealed by blood testing.
In December, I'll have a hair growth serum for you. I've been experimenting and refining the formulation for two years.
A final note that I’m in touch with several companies that are building novel hair regrowth therapies. They are promising and exciting.

They’re still years out but it’s cool to think that hair loss may no longer be a thing we have to think about. Just one reason why the future is going to be amazing. #dontdie
For my full protocols and guides visit Project Blueprint here:

blueprint.bryanjohnson.com/pages/blueprin…

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More from @bryan_johnson

Jul 23
Icing your boys in the sauna is a good idea.

Experiment #1:
+ sauna icing the boys improved fertility markers

Experiment #2:
+ no ice devastated fertility markers

Experiment #3:
+ icing again is healing the harm

My results explained and what to do🧵 Image
0/ The testicles are located “outside” the body in the scrotum specifically to maintain a temperature 2-4 °C below core body temperature, essential for optimal sperm production and storage (in the epididymis) .

Heat is known to multiple steps of spermatogenesis by disrupting the development of germ cells  and triggering DNA damage, oxidative stress and cell death.

This applies to heat exposure in sauna as well.

A single sauna session (20 min at 85°C) reduced sperm counts, full recovery took up to 5 weeks.

Continuous sauna for 3 to 6 months reduced the sperms with epigenetic structure and DNA packaging, and mitochondrial function all essential for fertilization.
My results starkly confirm this

1/ Beyond protecting my sperm, icing with sauna boosted all my sperm markers.

27 daily sauna sessions with ice on balls
+ total motile count ↑ 57%
+ concentration ↑ 26%
+ motility ↑ 16%,
+ normal morphology ↑ 15%

This is likely due to systemic sauna benefits, including improved blood flow and unparalleled detox effects, and possibly due to the direct effect of the daily cooling itself.
Read 7 tweets
Jul 21
Weekly nightmares might predict premature death and speed up aging.

A study found that weekly nightmares made people 3x more likely to die prematurely (before the age of 75).

Here’s what they found and how to prevent premature death by nightmares. 🧵 Image
1/ The study is based on 4196 adults (age 26-74, 18-years of follow-up). Beyond increasing risk of premature death before 75, the findings showed that weekly nightmares accelerated aging, based on 3 epigenetic clocks:
+ Speed of aging (DunedinPACE)
+ Time until death prediction (GrimAge)
+ How old your body behaves physiologically (PhenoAge)

Nightmares are scary for your health.

They cause nocturnal stress on your body:
+ Resting heart rate jumps by up to 10bpm
+ Heart rate variability falls (bad for recovery)
+ Cortisol spikes, sympathetic activation, and accelerated breathing

Nightmares are more common during periods of high stress, in those with anxiety disorders, and in anyone with trauma‐related conditions like PTSD.
2/ Reduce nightmare frequency by treating root causes and following a good sleep protocol. Image
Read 4 tweets
Jul 2
PFAS are forever chemicals.
In cookware, floss, and fast food wrappers.
They hurt fertility, the brain, and immune system.

They accumulate and the body can't eliminate them.
I got my levels tested.

Here’s what you can do to avoid your exposure. 🧵 Image
0/ PFAS are a class of 12,000+ man-made chemicals used to make things water-, stain-, and heat-resistant.

They’re found in:
+ nonstick pans
+ waterproof clothing
+ fast food wrappers
+ microwave popcorn bags
+ dental floss
1/ PFAS are linked to:

+ lower sperm count
+ disrupted thyroid hormones
+ immune suppression
+ elevated cholesterol
+ liver damage
+ increased cancer risk (kidney, testicular)
+ neurodevelopmental issues
+ lower fertility in women

This isn’t hyperbole, it’s supported by strong epidemiological data. Dozens of studies backed by the CDC, EPA, and NIH, support these findings.
Read 6 tweets
Jun 24
Glass had 5 – 50× higher plastic than plastic or cans

The French tested water, soda, beer, iced tea, lemonade, and wine sold nationwide and found that glass-bottled beverages carried far more plastic shrapnel than plastic bottles or cans.
🧵Image
0/ What the study found

“Around a hundred microplastic particles per litre” in cola, lemonade, iced tea and beer packed in glass — 5 – 50 × higher than their plastic-bottled or canned twins.

For still or sparkling water the counts were lower but still lopsided: 4.5 µplastics /L in glass vs. 1.6 µplastics /L in plastic.

Wine (with a cork, not a crown cap) stayed almost micro-plastic-free.
1/ Why is glass worse?

Paint flakes from the metal crown caps are almost identical in colour and polymer chemistry to the particles in the drink, pinning them as the culprit — not the glass itself.

Corked wine being microplastic free gives another strong clue

Cleaning matters: bottles capped with untreated crowns shed 287 particles /L, but a simple air-blast plus alcohol rinse cut that to 87 particles /L.
Read 8 tweets
Jun 18
15 sessions of sauna dramatically reduced toxins in my body.

+ 65% drop in 2,4-D
+ 100% drop in MEP
+ 15% drop in MBP
+ 100% drop in MEHP (undetectable post sauna)
+ 56% drop in NAPR
+ 56% drop in HEMA
+ 100% drop in Perchlorate (undetectable post sauna)

After completing fifteen sauna sessions, each lasting 20 minutes at 200°F, led to a significant reduction in my environmental toxins, three went from being abnormally high to undetectable post sauna.
0/ Baseline: toxin levels showed one high exposure and six moderate exposures. Approximately one month prior to starting the sauna regimen, urine tests indicated one high exposure (levels exceeding the 95th percentile), and six moderate exposures ( levels between the 75th and 95th percentiles).

Post-sauna: high exposures completely eliminated, only one medium exposure remained, and three previous moderate exposures became undetectable.
Here are toxins that sauna helped me eliminate from my body, and why it matters

1/ 2,4-Dichlorophenoxyacetic Acid (2,4-D)

High exposure → lower medium exposure

2,4-D is a herbicide, so it is probably leaking into my food via some fresh produce, which is very hard to monitor due to batch variation. I have been testing periodically and will continue to do so.
Read 7 tweets
May 22
Allulose is perhaps the most longevity-friendly sweetener. 🧵

Here's why:
+ it's safe
+ multiple health benefits
+ reduced blood glucose
+ metabolic benefits including fat loss, increased GLP1 secretion, liver health, teeth protection. Image
0/ What is Allulose?
Allulose is a rare sugar found naturally in fruits like figs and raisins. It is nearly calorie-free (0.2-0.4 kcal/g) because it is absorbed and excreted through urine without being metabolized by the human body. The minimal calorie contribution is attributed to limited metabolism by gut bacteria.
1/ Safety of allulose

Concerns regarding allulose mainly revolve around potential gastrointestinal issues, including severe diarrhea. However, a clinical study involving 30 adults (15 women and 15 men aged 21-30) determined that allulose was well-tolerated without digestive problems at single doses up to 0.4 g/kg and daily intakes of 0.9 g/kg of body weight. For a 70 kg adult, this equates to a single dose of 28 grams and a daily intake of 63 grams. Ref

The FDA also recognizes allulose as a low-calorie sweetener and excludes it from the definition of added sugars due to its non-metabolizable nature in the human body. RefImage
Read 7 tweets

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