In Conversation with Dr. Valérie Leduc: A Global Authority in Vascular Health, Beauty, and Longevity

Medicine was never a decision. It was a given.

Dr. Valérie Leduc knew she wanted to be a doctor since she was a child. "It was a vocation since I was little," she says. "I always wanted to take care of others, to give everything I knew, my knowledge, for other people and to help them." After high school, she enrolled in medical school without hesitation. "It was obvious to me. I signed up and didn't question it."

She trained in Paris, specialised in vascular medicine, and went on to work at the Institut des Vaisseaux et du Sang, at the time one of France's leading centres for venous thrombosis. It gave her a precise clinical foundation in the circulatory system that would later inform everything she built around the one part of it most doctors still overlook: the lymphatic system.

But before she got there, she made a detour that changed everything.

Eight years learning how the other half lives

After leaving hospital medicine for a private practice in Paris, Dr. Leduc was invited by pharmaceutical laboratories to lead specialist seminars in vascular medicine. She loved it immediately. Not the industry, but the sharing of knowledge. Bringing her specialty to physicians in other fields, building bridges between disciplines that rarely spoke to each other.

What she gained was irreplaceable: an understanding of how organisations actually function, how product strategy is built from evidence up, how to lead teams, and how to make science accessible to people who aren't scientists. Skills that, it turned out, she would need for exactly the kind of clinic she hadn't yet imagined building.

Geneva, and the radical idea of treating the whole person

Back in private practice in Paris, she made a decision that would reshape her approach entirely: she left for Geneva, where she medicalised the spa of La Réserve. In France, this is forbidden by the Conseil de l'Ordre. In Switzerland, it is not.

She created l'Institut Médical de la Jolie Jambe et de la Silhouette, a genuinely mixed practice of osteopaths, a nutritionist, and sports coaches working alongside her. Acupuncture, hypnosis, approaches still considered non-conventional in France were standard. Everything that conventional medicine put in separate boxes was integrated into a single patient journey.

"Women pay enormous attention to their face, their hands, but legs are so often left behind. And I find that very sad. Legs are an incredible asset." She spent years in Geneva correcting that. She also corrected something in herself: she arrived as a doctor who prescribed antibiotics at the first sign of infection and left deeply committed to natural medicine. "Today, it's very hard to get me to take one. I really changed."

She came back with a word nobody knew. She built a clinic around it anyway.

When Dr. Leduc returned to France in 2017, epigenetics was, as she puts it, "totally unknown." She read voraciously, wrote a book, and four years ago, in the middle of a pandemic, opened Maison Épigénétique.

The pandemic, counterintuitively, worked in her favour. Covid did something years of wellness messaging couldn't: it made people viscerally aware that health is not guaranteed. "People understood that health is essential. That it's a luxury, and you have to cherish it, nurture it, keep it for yourself."

Maison Épigénétique is not a spa. It's not a conventional clinic either. Every client receives a biological age, calculated from a full battery of metrics and AI-driven algorithms, and compares it to their chronological age. That gap becomes the map. "Soon, I think we won't ask people their age anymore," she says. "We'll ask: what is your biological age? That's far more interesting."

The clients range widely: women navigating perimenopause, entrepreneurs who have burned their health capital through years of chronic pressure, people who have simply decided to stop waiting to get sick before caring for their body. The through-line is the same for all of them. They want autonomy. They want to stay sharp. They want to live fully, for as long as possible.

The science moment. Because we're facts-first, always.

Here is the number Dr. Leduc returns to constantly: 85.

Eighty-five percent of your health is determined by you, by what you eat, how you sleep, how you move, how you manage stress, and the quality of the thoughts you hold. The remaining fifteen percent is genetics. That, in one sentence, is epigenetics: your genome is not your destiny. It's a set of possibilities your lifestyle switches on or off.

"Epi means above," she explains. "Epigenetics is what sits above genetics, the way we express the genes in our genome, or don't." The implications are profound. A family history of cardiovascular disease is not a fatality. It's a gene that can stay dormant, kept quiet by the right choices, consistently made.

That last one is not soft science. When you are loved and give love, your cortisol drops, your immunity rises, your gene expression changes. Love is, in Dr. Leduc's clinical framework, a biological event.

Muscle: the longevity organ nobody talks about

Most people think of muscle as something you build to look better or perform better. Dr. Leduc thinks of it as the most important longevity organ in the body. Full stop.

Here's why. When muscle works, it secretes molecules called myokines. According to Dr. Leduc, those myokines travel to the brain and stimulate BDNF — which triggers the formation of new neurons and synapses. Muscle also stimulates bone, which secretes osteocalcin, which similarly travels to the brain and supports new neuron formation. "There is an extraordinary virtuous circle between muscle, bone, and the brain," she says. "Everyone needs to understand that muscle is indispensable."

Her practical test: can you stand up from a chair without using your hands? Can you get up from the floor without support? If that's becoming difficult, it's a signal. The response is resistance training and significantly more protein, 1.2g per kilogram of body weight per day after 50, when absorption decreases and the body becomes less efficient at capturing amino acids from the blood.

Her preference: animal protein, well absorbed. For those who eat vegan: plant protein works, but you need more of it, and you need to be deliberate about it.

Meet your body's forgotten system — and why it ages faster than you think

As a vascular specialist, Dr. Leduc has spent her career working with both sides of the circulatory equation. The venous system gets attention. The lymphatic system, almost universally, does not.

Think of your lymphatic system as your body's purification network. It runs parallel to the veins, collecting excess fluid from your tissues, filtering bacteria, viruses, and toxins through the lymph nodes, and returning cleaned fluid to the bloodstream. It is essential, body-wide, and constantly working, but unlike the cardiovascular system, it has no pump. Nothing moves lymph except you moving.

When the lymphatic system slows down through aging, sedentary life, or stress, the signs show up on the body: heavy legs, feet that swell by evening, morning puffiness, skin that looks different at 8pm than it did at 8am, cellulite that doesn't shift. "When I ask my patients: do you prefer how you look in the morning versus the evening? When they say yes, that's the lymphatics not doing their job."

The good news: it responds to relatively simple interventions, movement, hydration, hot and cold contrast, elevation, and compression, when it's the right kind.

The compression conversation most brands don't want to have

The instinct most people have about compression: stronger is better. Dr. Leduc is unambiguous. It's not.

"No, no, no, absolutely not. That serves nothing." Too much compression crushes the vein entirely. The goal is compression calibrated precisely to your venous and lymphatic situation, not maximised for tightness, but calibrated for function.

The same logic applies to lymphatic drainage, which operates with extraordinary gentleness. Drainage always starts at the top, at the clavicular hollows, even when the problem is in the legs. By creating a vacuum at the top, the lymph is drawn upward and the legs are freed. "The lymphatics are very delicate. You have to speak to them gently." It's the opposite of what most people expect, and it's exactly right.

What she actually thinks about women and age (gather round)

Dr. Leduc hears it regularly from patients in their late twenties: "I don't want to end up like my mother." The fear arrives twenty years before the reality. We see you.

Her response is consistent and gently combative. Forty is a fabulous age, the most accomplished, the most self-aware. "She knows what she wants. She knows what she doesn't want. She knows what she loves." Fifty brings hormonal change, in women and men both, she notes, but also freedom. Medicine now has the intelligence to navigate that transition with confidence rather than dread. "There is still a wonderful part of life ahead of you." She put that line at the heart of her book on epigenetics. She means it clinically, not poetically.

The number she keeps returning to from her practice: eighty percent of her patients are beautiful. Eighty percent don't love themselves.

Pause on that.

This is not a soft observation. It is a clinical one. Negative self-regard generates negative thoughts, which generate cortisol, which alters immune function and gene expression. "These negative thoughts impact you in your health. Your biology will feel it." Self-love, in the framework she has spent a career building, is preventive medicine. The mirror is a diagnostic tool.

The bottom line

Dr. Leduc's career is not a straight line. Hospital medicine to pharma to Geneva to epigenetics to a clinic she opened during a pandemic. But the through-line is consistent: a belief that the body is capable of extraordinary things when you give it the right conditions, and that most people have far more control over their health than they've been led to believe.

Eighty-five percent. That's the number. The fifteen percent you can't control doesn't need your anxiety. The eighty-five percent deserves your full attention: your food, your sleep, your movement, your stress, the people around you, and the way you speak to yourself in the mirror.