At the AGE 2026 Annual Meeting, I had the opportunity to present our poster titled “Mitochondrial Throughput Limitation as a Bioenergetic Bottleneck in Aging.” The central question behind this work is simple: Do many aging-related metabolic problems arise, at least partly, from a shared limitation in the body’s ability to process, convert, and recover from biological stress? We often describe aging through its visible outcomes: increased fat accumulation, reduced muscle respo

Tinnitus is often described simply as “ringing in the ears.” But a recent Nature Reviews Disease Primers article makes clear that tinnitus is much more than an ear problem. It is a complex brain–ear condition involving hearing pathways, stress systems, emotional salience, attention, sleep, and large-scale brain networks. For some people, tinnitus is mild and temporary. For others, it becomes chronic, intrusive, and exhausting. The difference may not depend only on the loudnes

Sleep, Recovery, and the Body’s Energy Budget For many years, sleep has been treated as a simple health behavior: sleep more, feel better, live longer. In many cases, this is true. Too little sleep clearly harms the brain, metabolism, immune system, cardiovascular system, mood, and long-term health. But emerging research is adding an important nuance: more sleep is not always better. Two recent papers help explain why. One, the One Sleep Health framework by Tahmasian and coll

We often talk about mitochondria as the “powerhouses” of the cell. That metaphor is useful, but incomplete. Mitochondria do not simply make energy. They help decide whether a cell can repair, recycle, adapt, or eventually fall into chronic dysfunction. A recent review by Marzetti and colleagues, “Mitochondrial quality in aging and neurodegeneration: The emerging role of mitochondria-derived vesicles,” adds an important layer to this story. The authors describe how mitochondri

For several years, NAD⁺ has been one of the most popular molecules in the longevity world. It appears in supplement marketing, biological aging discussions, mitochondrial health programs, and even consumer testing panels. The story is often presented in a simple way: NAD⁺ declines with age, lower NAD⁺ means poorer cellular energy, and raising NAD⁺ may help restore youthful function. There is some biological logic behind this. NAD⁺ is deeply involved in metabolism, mitochondri

We often talk about mitochondria as the “power plants” of the cell. That metaphor is useful, but incomplete. Mitochondria do not only make ATP. They also help organize cellular metabolism, redox balance, stress signaling, inflammation, and repair. A new study in Cell Reports adds another important layer: mitochondria may help lysosomes stay acidic enough to digest and recycle cellular waste. This matters because one of the major biological features of aging is impaired macroa

We often think of exercise as something that “burns calories,” builds muscle, improves cardiovascular fitness, or lowers inflammation. All of this is true, but it may not go deep enough. At the cellular level, exercise is one of the most powerful ways to ask the body a simple question: Can you move energy through the system more efficiently? A recent review by Pedrosa and colleagues, titled “Extracellular mitochondria: a potential player involved in exercise health benefits,”

We are pleased to share that our manuscript, “Stress Is Inevitable; Recovery Is Conditional: Bioenergetic Limits of Resilience in Aging and Disease,” has been accepted for publication in Biogerontology. This paper represents another step in developing the concept of Exposure-Related Malnutrition, or ERM, as a framework for understanding how chronic stress, modern exposures, mitochondrial bioenergetics, aging, and disease vulnerability may be connected. The central message is

We usually think of exercise capacity as a muscle problem. Can the heart deliver enough oxygen? Can the lungs exchange enough air? Can mitochondria produce enough ATP? Can the muscle fibers contract, recover, and adapt? A new study published in Cell adds a surprising player to this story: B cells, the immune cells best known for producing antibodies. The study, titled “B cell deficiency limits exercise capacity by remodeling liver glutamate metabolism,” reports that mice lack

A recent perspective by Ferrucci, Donega, Maier, and Kroemer makes an important argument: medicine must move toward precision geromedicine—an approach that identifies individualized aging trajectories, detects early loss of resilience, and intervenes before frailty and multimorbidity become established. Their proposal shifts aging medicine away from a simple disease-by-disease model. Instead of waiting until clinical decline appears, precision geromedicine aims to understand

In biology, we often inherit simple stories to explain complex systems. One of the most enduring is this: mitochondria are the “powerhouses of the cell.” It’s useful—but incomplete. A perspective by Martin Picard and colleagues, “ Multifaceted mitochondria: moving mitochondrial science beyond function and dysfunction ” , challenges this simplification and proposes a much richer way of understanding mitochondria. Their message is clear: Mitochondria are not single-function mac

A new study in Nature Metabolism adds a powerful mechanistic layer to something many of us feel intuitively: when sleep is off, metabolism goes off. But this isn’t just about hormones or appetite—it goes deeper, into how your cells process energy at the mitochondrial level. What the researchers found helps explain a core idea in the Exposure-Related Malnutrition (ERM) framework: health depends not only on how much fuel you have, but on how well you can process it. The Key Fi

We’ve long treated disease by sending stronger signals —more hormones, more drugs, more stimulation—hoping the body will respond. But what if the real problem isn’t the signal… it’s the ability to execute ? A growing body of research is pointing in a different direction: the cell’s energy system—its mitochondria—may be the true bottleneck. And now, for the first time, we are not just observing this problem—we are beginning to intervene directly at the level of energy executio

Why Shivering Might Be the Signal Your Body Needs We often think of cold exposure as a simple stress—something uncomfortable, maybe even beneficial in vague ways. But recent research suggests something far more precise is happening. Cold, when applied correctly, may be one of the clearest real-world examples of how the body moves through a respond → adapt → hormesis sequence —not just at the level of metabolism, but deep within the cell. And importantly, these changes don’t h

For decades, we’ve been taught to think of aging like rust on a machine — a gradual buildup of damage that eventually leads to breakdown. It’s a useful metaphor, but it misses something important. A new study suggests a different way to see it: Aging may be less about failure — and more about a progressive inefficiency in how energy flows through our cells. A New Clue from the Cell’s Power Plants In a recent study published in Aging Cell , researchers explored what happens w

A new study reveals how metabolic “ gridlock ” drives heart failure—and why it matters for all chronic disease For years, we’ve been told that diseases like heart failure, diabetes, and aging are caused by “ mitochondrial dysfunction .” But what if the mitochondria are not broken? What if they’re simply overwhelmed? A new study by Ying Wang and colleagues, published in Nature Communications , gives us one of the clearest answers yet—and it changes how we should think about me

A new way to understand inflammation, stress, and recovery We tend to think of sleep as passive—something the body does when it shuts down. But a recent review, “ Sleep and Cytokines: A Bidirectional Dialogue Involving Rest and Immunity ” , challenges that idea. It proposes something much more powerful: Sleep is an active regulator of the immune system , tightly coordinated through inflammatory signaling molecules called cytokines. This is an important step forward. But it al

Why “Quality Control” Fails Under Stress In recent years, mitochondria have taken center stage in aging research. A new review titled “ Mitochondrial Quality Control as a Central Pharmacological Target in Aging ” brings together a growing body of evidence showing that maintaining mitochondrial health is not just important—it may be one of the most actionable targets in medicine. But there’s a deeper question the field is still trying to answer: Why does mitochondrial quality

The Hidden Imprint of Stress in Your Cells You recover from an infection. The fever subsides. The symptoms fade. Life moves on. But your body doesn’t return to exactly the same state. Beneath the surface, your cells remember. Inflammation Doesn’t Just Pass—It Leaves a Trace For years, inflammation has been viewed as something temporary—a response that rises, does its job, and resolves. But emerging research suggests a more complex reality. A recent Perspective in Science by

The Hidden Energy Crisis Behind Aging What if aging isn’t just about damage…but about running out of usable energy ? Not calories. Not nutrients. But the cell’s ability to turn fuel into usable power . A new clue from stem cell biology A recent study published in Nature Communications (Yamada et al., 2026) offers an important piece of this puzzle. Researchers found that a stress-response pathway—called the RIPK3–MLKL axis —can quietly damage mitochondria inside stem cells, w