Skip to content
POSTS
  • POSTS
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    I'm thinking about this every spare second I have:

    evolution is an unforgiving, unfeeling and violent process. We must evolve to avoid death and secure our place in the future.

    Mar 4, 2025 1173 54 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    I don't think we understand how fast AI is improving. Even those closest to it. I just don't think we can understand it. What do you think?

    Mar 4, 2025 2831 87 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Limitations
    1. Although the effects of long-term differences of daily heat-index on biological age are large and meaningful, these numbers originated from comparing the largest differences in exposure to heat days 1st and 100th percentiles, hence actual real-life differences…

    Mar 4, 2025 62 3 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    What you should do

    1. If given the option; choose to live in more temperate or and cooler climates, both extreme heat and extreme temperature swings can correlate with higher morbidity and mortality.

    2. Using indoor air conditioning on hot days, temperatures between 20°C and…

    Mar 4, 2025 170 7 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    2. Three epigenetic clocks were used to assess the effect of outdoors ambient heat on biological aging

    i. PHENOAge: measurement of biological age
    ii. GrimAge: estimates mortality risk
    iii. DunedinPACE: measures the speed of aging

    Mar 4, 2025 56 2 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Results

    1. PhenoAge clock was most sensitive to heat exposure differences; both short and long term increases in ambient outside temperature correlated with increases in PHENOAge biological age according; around 1 extra year for short term differences and over 3 years of…

    Mar 4, 2025 41 1 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    People living in hotter climates age faster

    Published this week a study used three distinct epigenetic aging clocks to show that more hotter days on average (caution-level and extreme level heat) make you age faster. 🧵

    Tweet media
    Mar 4, 2025 2832 195 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    Background

    0/ The study tracked biological age in 3686 adults over 56 years across the US in relation to outdoor ambient heat exposure.

    Mar 4, 2025 71 2 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    1. Comparisons were done for short and long-term differential exposure to outside heat based on daily heat index, as assessed by number of heat days: (heat caution= 80° to 90°F (26.7° to 32.2°C); 90° and 103°F (32.2° and 39.4°C)) as provided by the National Weather Service based…

    Mar 4, 2025 51 2 View on X
  • Bryan Johnson
    Bryan Johnson @bryan_johnson

    @nicolasjammet Nicolas it's great seeing you bring some sanity to food

    Mar 4, 2025 145 1 View on X
  • Posts navigation

    • «
    • 1
    • …
    • 155
    • 156
    • 157
    • 158
    • 159
    • …
    • 1,345
    • »
    © 2025 Bryan Johnson