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Yahoo
2 days ago
- Yahoo
Your organs have their own age – and it may predict health risks better than your birthday
If you've always thought your birthday was the best way to define how old you are, think again. Your organs, it turns out, are aging on their own schedules. A growing body of scientific research is shifting focus from chronological age to biological age, where your body's roughly 30 trillion cells, tissues and organs each have their own 'clocks' that can tick at different speeds. According to a groundbreaking peer-reviewed study published last week in Nature Medicine, Stanford University researchers found that an organ that is substantially 'older' than a person's actual age is at greater risk of disease. Researchers tracked this hidden timeline by analyzing thousands of proteins flowing through our blood. The body's cells, tissues and organs all have different 'clocks' ticking at different speeds (Getty Images) 'With this indicator, we can assess the age of an organ today and predict the odds of your getting a disease associated with that organ 10 years late,' Tony Wyss-Coray, a professor of neurology and neurological sciences at the university's Wu Tsai Neurosciences Institute, said in a statement. Take the brain, for example: an older one increases your risk of death by about 182 percent within the next 15 years, compared with people whose brains are aging normally, researchers found. On the flip side, those with brains biologically younger than their chronological age are believed to live longer. The study's authors concluded that having an older brain increased the risk of dementia threefold, while those with youthful brains have just a quarter of the usual risk. 'The brain is the gatekeeper of longevity,' Wyss-Coray said. 'If you've got an old brain, you have an increased likelihood of mortality.' An older biological heart age was linked to a higher risk of atrial fibrillation and heart failure, while aging lungs signaled an increased likelihood of developing chronic obstructive pulmonary disease (COPD). While your chronological age only goes up, the good news is that biological age can be slowed, paused or even reversed. Forty-year-old soccer star Cristiano Ronaldo has an estimated biological age of just under 29, according to data from the health tech brand Whoop. Bryan Johnson has documented his journey to reverse his biological age to that of a teenager (Dustin Giallanza) Kim Kardashian may be blowing out 44 candles on her next birthday but her biological age came in nearly a decade younger, according to results from an epigenetic clock test taken on The Kardashians last year. Meanwhile, Bryan Johnson, 47, the anti-aging tech guru and 'biohacker,' has documented his bizarre journey in an attempt to reverse his biological age to that of a teenager. You don't need to be into biohacking to change your organ's age — they can shift depending on a variety of factors, including your genes, how much you move, what you eat, your sleep habits and how you manage stress. Regular exercise, good nutrition and avoiding harmful habits like smoking all contribute to younger organ age and better health outcomes, according to Stanford University's research. Solve the daily Crossword
Yahoo
2 days ago
- Yahoo
Your organs have their own age – and it may predict health risks better than your birthday
If you've always thought your birthday was the best way to define how old you are, think again. Your organs, it turns out, are aging on their own schedules. A growing body of scientific research is shifting focus from chronological age to biological age, where your body's roughly 30 trillion cells, tissues and organs each have their own 'clocks' that can tick at different speeds. According to a groundbreaking peer-reviewed study published last week in Nature Medicine, Stanford University researchers found that an organ that is substantially 'older' than a person's actual age is at greater risk of disease. Researchers tracked this hidden timeline by analyzing thousands of proteins flowing through our blood. The body's cells, tissues and organs all have different 'clocks' ticking at different speeds (Getty Images) 'With this indicator, we can assess the age of an organ today and predict the odds of your getting a disease associated with that organ 10 years late,' Tony Wyss-Coray, a professor of neurology and neurological sciences at the university's Wu Tsai Neurosciences Institute, said in a statement. Take the brain, for example: an older one increases your risk of death by about 182 percent within the next 15 years, compared with people whose brains are aging normally, researchers found. On the flip side, those with brains biologically younger than their chronological age are believed to live longer. The study's authors concluded that having an older brain increased the risk of dementia threefold, while those with youthful brains have just a quarter of the usual risk. 'The brain is the gatekeeper of longevity,' Wyss-Coray said. 'If you've got an old brain, you have an increased likelihood of mortality.' An older biological heart age was linked to a higher risk of atrial fibrillation and heart failure, while aging lungs signaled an increased likelihood of developing chronic obstructive pulmonary disease (COPD). While your chronological age only goes up, the good news is that biological age can be slowed, paused or even reversed. Forty-year-old soccer star Cristiano Ronaldo has an estimated biological age of just under 29, according to data from the health tech brand Whoop. Bryan Johnson has documented his journey to reverse his biological age to that of a teenager (Dustin Giallanza) Kim Kardashian may be blowing out 44 candles on her next birthday but her biological age came in nearly a decade younger, according to results from an epigenetic clock test taken on The Kardashians last year. Meanwhile, Bryan Johnson, 47, the anti-aging tech guru and 'biohacker,' has documented his bizarre journey in an attempt to reverse his biological age to that of a teenager. You don't need to be into biohacking to change your organ's age — they can shift depending on a variety of factors, including your genes, how much you move, what you eat, your sleep habits and how you manage stress. Regular exercise, good nutrition and avoiding harmful habits like smoking all contribute to younger organ age and better health outcomes, according to Stanford University's research.
Forbes
3 days ago
- Forbes
Skeptical Intelligence Is Crucial In The Age Of AI
Skeptical Intelligence In boardrooms, strategy offsites, and investor summits, the conversation invariably turns to artificial intelligence. Will it take our jobs, supercharge our growth, or expose hidden risks we've never anticipated? Amid the hype, one truth emerges: in a world awash with machine-generated insights, the uniquely human ability to question, probe, and test assumptions—what we might call Skeptical Intelligence—could be our most indispensable asset. Yet despite billions spent annually on leadership development, few executives can precisely define what it means to think skeptically, let alone how to develop it. To understand why Skeptical Intelligence deserves a seat alongside IQ and Emotional Intelligence, we need to revisit how these earlier concepts reshaped our understanding of human capability—and then explore what a third pillar might entail. The Age of IQ For much of the 20th century, intelligence meant only one thing: IQ. It was the gold standard, the quantifiable metric by which students were sorted, employees were promoted, and national rankings were compared. The concept of general intelligence originated with Charles Spearman in 1904, who observed that individuals who performed well on one type of cognitive test tended to do well on others. This statistical correlation suggested a broad, underlying mental capacity. Alfred Binet in France and later Lewis Terman at Stanford created IQ tests that could numerically represent this capacity, leading to the IQ boom of the 20th century. IQ proved remarkably good at predicting certain kinds of success: academic performance, logical problem-solving, and even long-term earnings. But by the 1980s, cracks began to appear. Why did some top scorers flounder in the real world while others with merely average IQs thrived? The Rise of Emotional Intelligence The first serious challenge came from Howard Gardner, whose 1983 book Frames of Mind introduced the theory of multiple intelligences. Gardner argued that musical, spatial, kinesthetic, interpersonal, and intrapersonal intelligences were just as real and valuable as linguistic or logical-mathematical skills. This pluralistic view was controversial but set the stage for even more focused alternatives. In 1990, two psychologists, Peter Salovey and John Mayer, proposed the concept of Emotional Intelligence. They defined it as the ability to perceive, understand, manage, and use emotions effectively. In their view, emotions were not a distraction from rational thinking but a vital component of it. But it was Daniel Goleman who truly ignited the global conversation. His 1995 bestseller Emotional Intelligence: Why It Can Matter More Than IQ argued that self-awareness, self-regulation, empathy, and social skills often trump raw cognitive horsepower in leadership and life. Goleman's work popularized the idea that a high EQ could distinguish great leaders from merely smart ones. Corporations embraced the concept eagerly. Emotional intelligence trainings became standard fare in leadership programs at GE, IBM, and Goldman Sachs. Consulting firms created entire practices around measuring and developing EQ. And yet even with these advances, the dominant paradigm still focused on how well we feel and connect—not necessarily how well we question. Enter Skeptical Intelligence In the last few years, a new concern has emerged. As machine learning systems become capable of astonishing feats—drafting legal briefs, diagnosing diseases, predicting consumer churn—our natural tendency is to trust them. Algorithms, after all, seem less biased, less emotional, more data-driven than we are. But recent high-profile failures—facial recognition systems that couldn't recognize dark-skinned faces, loan algorithms that penalized women, language models that hallucinate references—have underscored that AI can be deeply flawed. And these flaws are often subtle, buried inside complex statistical models that even their creators struggle to fully interpret. The result? The need for a new kind of human intelligence: the capacity to critically interrogate the outputs of sophisticated systems. This is where Skeptical Intelligence comes in. Skeptical Intelligence is not the same as mere contrarianism or reflexive doubt. It is a disciplined approach to questioning that combines curiosity, critical thinking, epistemic humility (knowing what you don't know), and a toolkit for evaluating evidence. If IQ is about solving well-defined problems and EQ is about navigating social and emotional landscapes, Skeptical Intelligence is about resisting easy answers and probing beneath the surface—especially when powerful technologies tempt us to outsource our judgment. We can draw on decades of research in critical thinking and cognitive psychology to sketch out its potential components. Scholars like Robert Ennis, Richard Paul, Rita McGrath, Eric Reis, and Linda Elder have long studied what it means to think critically. Their frameworks emphasize abilities such as: In this sense, Skeptical Intelligence can be thought of as a disposition for critical thinking applied rigorously to the modern data and AI landscape. Why We Need Skeptical Intelligence Now Paradoxically, the better AI gets, the more tempting it is to disengage our skeptical faculties. Machine learning models often produce outputs accompanied by confidence scores or impressive-looking graphs, which can lull decision-makers into a false sense of certainty. A 2022 study by Harvard Business School found that managers were significantly more likely to accept flawed AI recommendations if they were presented with visually compelling dashboards—even when inconsistencies were apparent. This is not merely a theoretical risk. Consider the 2020 incident when a widely used recruiting algorithm at a Fortune 500 company was found to downgrade resumes from women because the training data contained historical biases favoring male candidates. Or the series of fintech apps that misclassified minority borrowers as high-risk based on opaque clustering techniques. These failures happened not because executives were malicious or incompetent, but because they lacked sufficient Skeptical Intelligence to interrogate the models. Warren Buffett famously said, 'It's good to learn from your mistakes. It's better to learn from other people's mistakes.' In the AI era, it's best to preempt mistakes altogether by cultivating a culture of healthy skepticism. This does not mean ignoring AI insights. Rather, it means creating systems of 'trust but verify'. Leaders high in Skeptical Intelligence know how to ask pointed questions of data scientists and to challenge assumptions without falling into endless analysis paralysis. The Practice of Skeptical Intelligence Imagine a CFO reviewing an AI-driven forecast that predicts a 12% uptick in demand for a new product line. Instead of simply applauding or rubber-stamping the recommendation, the CFO trained in Skeptical Intelligence would ask: Or picture a marketing VP using a generative AI tool to craft campaign messages. Someone with strong Skeptical Intelligence wouldn't just check grammar—they'd probe for embedded stereotypes, test multiple prompts for consistency, and cross-check factual assertions. Skeptical Intelligence also means knowing when to consult outside experts, when to run pilot tests before full-scale rollouts, and when to keep a human in the loop for judgment calls that have ethical or reputational stakes. Building Skeptical Intelligence in organizations How can today's companies cultivate this emerging form of intelligence? Skeptical Intelligence as a Superpower When historians look back at the early decades of the AI revolution, they may marvel at how readily humans deferred to machines—sometimes with spectacular results, sometimes with catastrophic consequences. The leaders who thrive will be those who balanced innovation with interrogation, speed with scrutiny. IQ and EQ remain foundational. But Skeptical Intelligence—the disciplined, curious, humility-infused ability to question even the smartest systems—may prove to be the crown jewel of human capability in the algorithmic age.
