Science-Backed Habits to Extend Your Lifespan According to Experts

You’ve seen the ads—sleek Instagram reels promising to reverse aging with a $79 DNA test, TikTok biohackers hawking oxygen therapy sessions, and YouTube gurus selling “longevity stacks” of unregulated supplements. But while these viral trends flood your feed, a Paris-based geriatrician with three decades of research under his belt is sounding the alarm: most of what’s being sold as “anti-aging” is either unproven, risky, or outright fraudulent. And if you live in Austin, Texas—where wellness culture thrives alongside a booming tech scene—this warning hits especially close to home.

Dr. Christophe de Jaeger, president of the French Society of Medicine and Physiology of Longevity, recently published a scathing critique in Atlantico, dismantling the four most pervasive “miracle” practices peddled by online influencers. His message? The real science of longevity isn’t flashy, but it’s the only thing that actually works. For Austinites—who spend millions annually on boutique wellness retreats, cryotherapy chambers, and IV vitamin drips—his advice could save more than just money. It could save lives.

The Three Worlds of Longevity: Where Austinites Are Getting Lost

De Jaeger breaks the anti-aging landscape into three distinct spheres, and Austin’s health-conscious crowd is drowning in the most dangerous one.

1. The Basics (What Your Doctor Says)

   This represents the foundation: eat whole foods, move regularly, prioritize sleep, and manage stress. In Austin, where farmers’ markets like Mueller Farmers’ Market and Boggy Creek Farm develop healthy eating accessible, this should be the easiest sell. Yet, even here, only 28% of adults meet the CDC’s physical activity guidelines, according to a 2025 report from the Austin Public Health Department. The disconnect? People are chasing “biohacks” instead of mastering the fundamentals.

2. Evidence-Based Longevity Medicine (The Real Science)

   This is where de Jaeger operates. His work focuses on measuring biological age—how old your organs actually are compared to your chronological age—and using targeted interventions to slow decline. For example, his research shows that caloric restriction of 20-25% (without malnutrition) can extend lifespan in humans, a finding backed by decades of primate studies. In Austin, clinics like Everly Health (which offers biological age testing) and Functional Medicine Austin are beginning to adopt these approaches, but they’re still overshadowed by flashier alternatives.

3. The Wild West (What’s Flooding Your Feed)

   This is the realm of unregulated supplements, DIY stem cell injections, and “longevity coaches” with no medical training. De Jaeger doesn’t mince words: “These practices belong to neither longevity science nor medicine. They are pure business and can pose real health risks.” In Austin, where wellness influencers flock to promote everything from NAD+ IV drips to “epigenetic reprogramming” retreats, his warning is urgent. A 2025 investigation by the Texas Medical Board found that 63% of Austin-area clinics offering “anti-aging” treatments lacked proper oversight, with some using unapproved compounds.

The Four Practices De Jaeger Calls Out—And What Austinites Should Do Instead

De Jaeger’s Atlantico piece zeroes in on four trends that have taken root in Austin’s wellness scene. Here’s what they are, why they’re dangerous, and what science actually supports.

1. The “Longevity Stack” Supplement Scam

The Trend: Influencers sell bundles of supplements—NMN, resveratrol, fisetin—promising to “turn back your biological clock.” Some Austin-based “longevity coaches” charge $500+ for personalized stacks, often based on dubious at-home blood tests.

The Risk: De Jaeger warns that many of these compounds lack long-term safety data. A 2024 study in JAMA Internal Medicine found that 42% of supplements marketed for longevity contained unlisted ingredients, including prescription drugs. In Austin, the Central Texas Poison Center reported a 30% increase in calls related to supplement toxicity between 2023 and 2025.

The Science-Backed Alternative: De Jaeger emphasizes that no supplement can replace a healthy lifestyle. Instead, he points to metformin (a diabetes drug with longevity benefits in non-diabetics) and rapamycin (an immunosuppressant being studied for its anti-aging effects) as the only compounds with robust evidence—and both require a prescription. For Austinites, the message is clear: skip the Instagram stacks and talk to a board-certified geriatrician or functional medicine doctor about evidence-based options.

2. At-Home DNA Tests for “Personalized Longevity”

The Trend: Companies like 23andMe and newer players like LongevityDNA (which has a strong presence in Austin) sell $79–$200 kits promising to reveal your “genetic age” and recommend anti-aging protocols. Influencers then push expensive follow-up services, from custom peptides to stem cell therapies.

The Risk: De Jaeger calls these tests “marketing tools, not medical tools.” A 2025 report from the National Institutes of Health found that 87% of direct-to-consumer genetic tests for longevity had no clinical validation. In Austin, where tech workers are early adopters, some have spent thousands on unproven treatments based on these results—only to end up in ERs with complications.

The Science-Backed Alternative: De Jaeger recommends comprehensive biological age testing through medical providers, which measures biomarkers like telomere length, epigenetic clocks, and inflammatory markers. In Austin, clinics like Everly Health and Vitality Medical Group offer these services under physician supervision. “If you’re going to spend money on testing,” de Jaeger says, “do it where the results are actionable—and where a doctor can interpret them.”

3. Oxygen Therapy and “Biohacking” Chambers

The Trend: Hyperbaric oxygen therapy (HBOT) and “cryo chambers” have exploded in Austin, with wellness centers charging $100–$300 per session for promises of “cellular rejuvenation.” Some influencers even sell portable oxygen concentrators for home use, claiming they can “reverse aging at the mitochondrial level.”

The Risk: De Jaeger is blunt: “There is no evidence that oxygen therapy slows aging in healthy individuals.” While HBOT is FDA-approved for conditions like decompression sickness and wound healing, its use for longevity is speculative at best. A 2024 study in The Lancet Healthy Longevity found that only 12% of HBOT studies for anti-aging met rigorous scientific standards. In Austin, where wellness tourism is a $200M industry, many centers operate without medical oversight, putting clients at risk of oxygen toxicity or barotrauma.

The Science-Backed Alternative: De Jaeger points to exercise as the most potent “oxygen therapy”. “A brisk 30-minute walk does more for your mitochondria than any chamber,” he says. For Austinites, this means prioritizing activities that boost cardiovascular health—like hiking the Greenbelt or joining a cycling group—over expensive, unproven treatments.

4. Stem Cell “Fountain of Youth” Injections

The Trend: Clinics in Austin and surrounding areas offer “stem cell facials,” joint injections, and even intravenous stem cell therapies, often sourced from umbilical cord blood or adipose tissue. Prices range from $3,000 to $20,000, with influencers claiming they can “regenerate organs” and “reverse aging.”

The Risk: De Jaeger calls this “the most dangerous trend of all.” The FDA has not approved any stem cell therapies for anti-aging, and unregulated treatments have led to severe complications, including tumors and immune reactions. In 2025, the Texas Medical Board shut down three Austin-area clinics after patients developed infections and abnormal tissue growth from unapproved stem cell injections.

The Science-Backed Alternative: De Jaeger highlights two areas of legitimate stem cell research: exosome therapy (still experimental) and platelet-rich plasma (PRP) (approved for orthopedic use but not anti-aging). For Austinites, the takeaway is simple: if you’re considering stem cell treatments, seek out academic medical centers like Dell Medical School at UT Austin, which conducts FDA-approved clinical trials—not wellness spas.

Why Austin’s Wellness Culture Is Particularly Vulnerable

Austin’s obsession with longevity isn’t just a trend—it’s a cultural phenomenon. The city’s tech-driven economy attracts a population that’s both affluent and eager to optimize every aspect of life, from productivity to lifespan. But this same culture also makes Austinites prime targets for pseudoscience. Here’s why:

• The “Hack Everything” Mindset:

  Austin’s tech scene glorifies optimization, and that mentality spills into health. When influencers frame aging as a “bug to fix” rather than a natural process, people are more likely to try unproven “hacks.” De Jaeger warns that this approach ignores the complexity of human biology: “Aging isn’t a software problem. You can’t just ‘debug’ it with a supplement stack.”

• The Wellness Industrial Complex:

  Austin has more wellness centers per capita than any other Texas city, with new “longevity clinics” opening monthly. Many operate in a regulatory gray area, offering treatments that straddle the line between medicine and spa services. The Austin Chamber of Commerce estimates that the city’s wellness economy grew by 18% in 2025 alone—but with little oversight, consumers are left to navigate a minefield of misinformation.

• The “Austin Paradox”:

  The city prides itself on being progressive and health-conscious, yet its residents often bypass traditional medicine in favor of trendy alternatives. A 2025 survey by the Texas Health Institute found that 41% of Austinites had tried at least one “biohacking” treatment in the past year—compared to just 19% of Texans overall. De Jaeger’s warning is a wake-up call: “Being open-minded is good. Being gullible is dangerous.”

How to Age Well in Austin: A Science-Backed Roadmap

De Jaeger’s work isn’t just about debunking myths—it’s about offering a clear, evidence-based path to longevity. For Austinites, that means focusing on what actually moves the needle. Here’s his four-pillar approach, adapted for life in Central Texas:

1. Measure Your Biological Age (The Right Way)

Skip the at-home DNA tests. Instead, get a comprehensive biological age assessment from a medical provider. In Austin, options include:

• Everly Health (downtown): Offers epigenetic testing and biomarker analysis.
• Vitality Medical Group (Domain): Specializes in advanced longevity diagnostics.
• Dell Medical School: Conducts research on biological age and offers clinical trials.

De Jaeger’s advice: “Knowing your biological age is powerful, but only if you act on it. Use the data to guide lifestyle changes, not to chase quick fixes.”

2. Adopt a Longevity-Focused Diet (With an Austin Twist)

De Jaeger’s research highlights caloric restriction (20–25% reduction) and time-restricted eating as the most effective dietary strategies for longevity. But he also emphasizes that food should be enjoyable—not punishing. For Austinites, that means:

• Prioritize local, seasonal produce: Shop at Mueller Farmers’ Market or Lone Star Farmers Market for fresh, nutrient-dense foods. De Jaeger’s top picks: leafy greens, berries, and cruciferous vegetables (all abundant in Texas).
• Embrace the Mediterranean diet: Austin’s thriving Middle Eastern and Greek food scene makes this effortless. Restaurants like Sour Duck (Mediterranean-inspired) and Elaine’s on Franklin (Greek) offer longevity-friendly options.
• Limit processed foods: A 2025 study in Nature Aging found that ultra-processed foods accelerate biological aging. In Austin, where food trucks and convenience stores dominate, this means opting for whole foods whenever possible.

3. Move Like an Austinite (But Smarter)

Exercise is the closest thing we have to a “fountain of youth,” but de Jaeger warns that not all movement is created equal. His recommendations for Austinites:

• Strength training 2–3x/week: Resistance exercise is critical for maintaining muscle mass and bone density. Austin’s Castle Hill Fitness and Black Swan Yoga offer classes tailored to older adults.
• Cardio with a view: De Jaeger calls walking “the most underrated longevity tool.” Austin’s Ann and Roy Butler Hike-and-Bike Trail and Lady Bird Lake provide the perfect backdrop for daily movement.
• Avoid “chronic cardio”: Marathon training and excessive endurance exercise can accelerate aging. Instead, focus on moderate-intensity activities like cycling (Austin’s Veloway is ideal) or swimming (try Barton Springs Pool).

4. Optimize Sleep and Stress (Austin’s Hidden Challenge)

Austin’s “work hard, play hard” culture takes a toll on sleep and stress levels—both critical factors in aging. De Jaeger’s advice:

• Prioritize sleep like your life depends on it (because it does): Poor sleep accelerates cellular aging. Austin’s Sleep Centers of Austin offers diagnostics and treatments for sleep disorders.
• Manage stress with nature: Chronic stress raises cortisol, which damages telomeres. De Jaeger recommends “green therapy”—spending time in nature. Austin’s Zilker Park and Wild Basin Wilderness Preserve are perfect for stress relief.
• Try mindfulness (but skip the gimmicks): Apps like Headspace and Calm are popular in Austin, but de Jaeger warns against “biohacking” alternatives like float tanks or sensory deprivation pods. “Simple meditation works just as well,” he says.

If You’re Serious About Longevity in Austin, Here’s Who You Need to Know

Given my background in medical journalism and deep dives into public health, I’ve seen firsthand how Austin’s wellness scene can both empower and mislead. If you’re ready to move beyond the hype and invest in real longevity, here are the three types of local professionals you should seek out—and exactly what to look for in each.

1. Board-Certified Geriatricians (The Longevity Specialists)

Why they matter: Geriatricians are the only physicians trained specifically in aging. They understand how to interpret biological age tests, prescribe evidence-based interventions, and navigate the ethical gray areas of longevity medicine.

What to look for:

• Certification by the American Board of Internal Medicine (ABIM) in geriatric medicine.
• Affiliation with a major hospital system (e.g., Ascension Seton, St. David’s HealthCare) or academic center (Dell Medical School).
• Experience with biological age testing and personalized longevity plans.

Where to find them:

• UT Health Austin (downtown): Offers a dedicated geriatrics clinic with a focus on healthy aging.
• St. David’s Senior Care: Provides comprehensive geriatric assessments.

2. Functional Medicine Doctors (The Integrative Approach)

Why they matter: Functional medicine takes a whole-body approach to aging, addressing root causes like inflammation, gut health, and metabolic dysfunction. While not all functional medicine practitioners are equal, the best combine conventional medicine with evidence-based integrative therapies.

What to look for:

• Certification by the Institute for Functional Medicine (IFM) or the American Board of Integrative Medicine (ABOIM).
• A focus on data-driven diagnostics (e.g., advanced lab testing, biological age assessments) rather than unproven treatments.
• Willingness to collaborate with your primary care physician and specialists.

Where to find them:

• Functional Medicine Austin (Domain): Led by IFM-certified practitioners.
• Vitality Medical Group (Domain): Offers longevity-focused functional medicine.

3. Registered Dietitians Specializing in Longevity (The Nutrition Experts)

Why they matter: Nutrition is the cornerstone of longevity, but misinformation abounds. A registered dietitian (RD) with expertise in aging can support you design a diet that supports cellular health, reduces inflammation, and aligns with your biological age.

What to look for:

• Certification as a Registered Dietitian Nutritionist (RDN) by the Commission on Dietetic Registration (CDR).
• Specialization in gerontological nutrition or longevity science (look for additional certifications like Certified Specialist in Gerontological Nutrition (CSG)).
• Experience working with biological age data and personalized nutrition plans.

Where to find them:

• Nourish Austin (multiple locations): Offers nutrition counseling with a focus on longevity.
• Dell Medical School’s Nutrition Services: Provides evidence-based dietary guidance.

Ready to find trusted professionals? Browse our complete directory of top-rated longevity experts in the Austin area today.