48 Going On 18: The Astonishing Reality Of Bryan Johnson's Age And Project Blueprint In 2025

Bryan Johnson’s age is one of the most highly scrutinized metrics in the world today, not because of his chronological years, but because of the unprecedented biological reversal he claims to be achieving through his Project Blueprint. As of December 2025, the tech entrepreneur is 48 years old, yet he is dedicated to proving that this number is merely a suggestion, not a biological sentence, by spending over $2 million annually to achieve the body of an 18-year-old.

The obsession with Johnson's age stems from his open-source, data-driven quest for human longevity, which has transformed him from a successful venture capitalist into the face of radical biohacking. This article dives deep into the latest, most current metrics of his anti-aging protocol, the massive $60 million investment into his longevity startup, and the specific daily routines that have made his biological age a global phenomenon.

Bryan Johnson: Complete Biography and Profile

Bryan Johnson is an American entrepreneur, venture capitalist, and author best known as the founder of Project Blueprint and the former CEO of Braintree, a payment processing company. His current focus is on human longevity and reversing the aging process through extreme, quantified self-experimentation.

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• Full Name: Bryan Johnson
• Date of Birth: August 22, 1977
• Chronological Age (Dec 2025): 48 years old
• Place of Birth: Provo, Utah, USA
• Nationality: American
• Education: Brigham Young University (BA), University of Chicago Booth School of Business (MBA)
• Spouse/Family: Divorced, has three children.
• Career Highlights:
  • Founder of Braintree, an online payment system, which he sold to eBay for $800 million in 2013.
  • Founder of OS Fund, a venture capital firm that invests in early-stage science and technology companies.
  • Founder and CEO of Kernel, a neurotech company developing advanced brain interfaces.
  • Founder of Project Blueprint, his personal longevity and anti-aging protocol.
• Estimated Net Worth (2025): $400 Million (attributed mainly to the sale of Braintree and subsequent investments)
• Annual Longevity Spending: Over $2 million (on a team of 30+ doctors and medical professionals)

The Discrepancy: Chronological Age vs. Biological Age in 2025

The core of the Bryan Johnson story lies in the stark contrast between the number on his birth certificate and the metrics measured by his medical team. While his chronological age is 48, his goal is to achieve and maintain the biological age of a teenager. He is not just trying to live longer; he is attempting to reverse the aging process itself, a concept he calls "quantified rejuvenation."

Key Biological Age Metrics and Latest Achievements

Johnson uses a battery of advanced diagnostic tools to track his progress, moving beyond simple blood tests to focus on the most predictive markers of aging. His success is measured by two primary metrics:

1. Epigenetic Age Reversal:

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Epigenetic clocks, such as the Horvath Clock and others, measure the patterns of DNA methylation to estimate a person's biological age. Johnson famously claimed to have reversed his epigenetic age by 5.1 years in just seven months. His current goal is to have the lowest epigenetic age of any human in history. This metric is a key component of the "Rejuvenation Olympics," a global, open-source competition he created to track biological age reversal.

2. Pace of Aging (DunedinPACE):

Perhaps the most critical metric is the DunedinPACE, which measures the rate at which a person is aging *per year*. The average person ages at a pace of 1.0, meaning for every calendar year, they accumulate one year of biological aging. Johnson's latest objective is to maintain a pace of aging significantly lower than 1.0, effectively slowing down the clock in real-time.

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3. Organ Age Benchmarks:

Johnson’s protocol involves tracking the biological age of over 70 of his organs, comparing them to the baseline of an adolescent. His team aims for specific, youthful ages for vital organs:

• Heart: Targeting the function of a 37-year-old.
• Skin: Targeting the appearance and health of a 28-year-old.
• Lung Capacity (VO2 max): Targeting the capacity of an 18-year-old.

The 2025 Blueprint Protocol: Diet, Supplements, and Routine

Project Blueprint is not a diet or an exercise plan; it is a meticulously calculated, constantly evolving protocol designed to optimize every bodily function. The entire process is open-source, allowing anyone to view the data and attempt to replicate the results.

The Ultra-Strict Daily Routine

Johnson’s daily life is a testament to extreme discipline, eliminating all decision-making fatigue to ensure consistency. His routine is non-negotiable and timed to the minute:

• Sleep: He adheres to a strict sleep schedule, waking and sleeping at the same time daily, often incorporating advanced sleep tracking and UV light therapy in the morning.
• Exercise: His routine includes a structured, 60-minute workout focused on strength and cardiovascular health, complemented by short movement breaks (5-10 minutes) after every meal.
• Food Intake: He consumes a strictly plant-based diet, excluding only collagen peptides which are animal-derived. His total daily intake is precisely 2,250 calories, divided into three meals, all consumed within a tight window to maximize the benefits of intermittent fasting.

The 100+ Supplement Stack

Perhaps the most controversial aspect of Blueprint is the sheer volume of daily supplements. Johnson consumes over 100 pills, powders, and oils every day, meticulously chosen based on blood work and diagnostic results. This stack is constantly updated, but key categories remain consistent:

• NAD+ Precursors: Compounds like NMN or Nicotinamide Riboside (NR) are taken to boost cellular energy and repair.
• Senolytics: These are compounds designed to clear out senescent ("zombie") cells that contribute to aging.
• Pharmaceuticals: His protocol includes various prescription medications, such as Acarbose, Tadalafil, and Candesartan, each serving a specific, data-validated longevity purpose.
• Micronutrients: A comprehensive array of vitamins, minerals, and essential fatty acids to ensure zero nutritional deficiencies.

The Future of Blueprint: A $60 Million Bet on Longevity

In a major development in 2025, Johnson's longevity startup—the commercial arm of his work—closed a significant $60 million funding round. This capital injection signifies a massive shift: the Blueprint protocol is moving from a personal experiment to a scalable, commercial endeavor. The goal is to make the highly quantified, data-driven approach to health and healthspan more accessible to the public, moving the conversation about anti-aging from speculation to verifiable science. His work, while extreme, is pushing the boundaries of what is medically possible, making the answer to "How old is Bryan Johnson?" far more complex and fascinating than ever before.