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  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    5/ I'll be posting soon about what you can do to improve sperm health.

    Mar 19, 2025 444 3 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    4/ Abnormal sperm parameters correlate with a shorter life expectancy

    A study involving 11,935 men evaluated for infertility found that men with abnormal sperm parameters had higher mortality rates. Men with two or more abnormal sperm parameters had a 2.3 fold increase in all…

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    Mar 19, 2025 102 2 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    2/ Poor sperm counts predict lower testosterone levels and poor metabolic health.

    A study involving 5177 found that men with a total sperm count of below 39 million per ejaculate were 12 times more likely to have abnormally low testosterone levels. Moreover, men with low sperm…

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    Mar 19, 2025 80 3 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    3/ Poor sperm quality predicts higher risk of age-related chronic disease and addiction

    A study comparing 13,027 men with semen-related infertility to 23,860 men with no semen abnormalities showed that men with abnormal semen parameters (male factor infertility) had 30% and 48%…

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    Mar 19, 2025 63 1 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    0/ I have more motile sperm than the average healthy 22-29 year olds and much higher than the average fertile US man (104 million motile sperm count for the US father, age 32∓6 years).

    Image above of my sperm is from a 2023 test.

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    Mar 19, 2025 115 2 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    1/ Sperm quality predicts health and longevity

    Beyond predicting infertility, poor sperm quality also correlates with poorer health, higher incidence of age related disease, and premature death. While a total motile sperm of 20 million is enough for fertility, this number is a…

    Mar 19, 2025 96 5 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    My sperm quality equal to a healthy 20-year-old.

    + sperm 330 million
    + motility 53%
    + motile sperm 175 million
    + morphology 10% normal

    Sperm health predicts testosterone, metabolic health, disease, addiction, and life expectancy. 

    Here’s what you need to know.🧵

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    Mar 19, 2025 2618 93 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @TiffanyFong_ @jacqmelinek hbday...try celebrating w tea as alcohol worsens skin health by dehydrating and weakening skin barrier leading to dryness, dullness, and increased fine lines.

    Also triggers inflammation and oxidative stress, accelerating collagen breakdown and premature aging. Also disrupts gut…

    Mar 19, 2025 3903 62 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Many people are depressed...and many depression treatments don't work.

    Theres a new treatment protocol that has a 78% success rate. It only takes 5 days and worked in treatment-resistant patients. It's called SAINT TMS.

    My cofounder @_katetolo was depressed and tried it.

    Mar 19, 2025 1882 104 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @boneGPT my system was ~$100,000 and is in my garage making it very easy to do it daily. Also, the 21% oxygen in the chamber allowed me to work during the session. I'm guessing many more health clinics will be getting systems like I have making it easier for you to do it close to home.

    Mar 18, 2025 105 5 View on X
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