In this inspiring episode of The Tonic podcast, host Jamie Bussin welcomes back naturopathic doctor Colleen Hartwick for a deep dive into one of today’s most important health topics: health span.

While many conversations around wellness focus on how long we live, the growing trend is about how well we live during those extra years. This episode is about quality of life as we age—staying strong, sharp, and independent.

What Is Health Span?

Dr. Hartwick begins by defining health span as the number of years lived free of chronic disease, with mobility, independence, and mental sharpness intact. Unlike lifespan, which only measures years, health span emphasizes vitality, resilience, and function. The question isn’t just “How long will I live?” but rather, “How healthy and capable will I be during those years?” They stress how it’s not just a topic to address upon retirement, but at a younger age.

The Role of Nutrition

Food is the foundation of health. Dr. Hartwick explains how fruits, vegetables, healthy fats, lean proteins, and fiber help build a stronger gut microbiome and protect against oxidative stress. She stresses how healthy fats and unprocessed foods are crucial. She highlights the often-overlooked role of herbs and spices as concentrated sources of antioxidants that help slow the aging process.

The Power of Supplements

While whole foods are essential, modern agriculture and lifestyle factors often leave gaps in our nutrition. Dr. Hartwick outlines her go-to supplements for extending health span, including:

• Magnesium – for stress resistance and sleep enhancement, as they both are pillars for better health.
• Vitamin D3 + K2 – for immune function, bone health (bone density and osteoporosis), and inflammation control.
• Omega-3s (EPA & DHA) – for brain support and anti-inflammatory protection. These serve as a stop-gap measure for those who do not like fish.
• Coenzyme Q10 – for energy production and antioxidant defense, especially important for those on statins. They’re also simply useful for age related depletion.
• Superfood powders – for patients who struggle with fruit and vegetable intake.

Her perspective: supplements don’t replace food; they bridge gaps and optimize function.

Exercise as Medicine

Nutrition is only part of the equation—movement is equally critical. Dr. Hartwick emphasizes resistance training to preserve muscle mass, protect bone density, and support balance. Strong quadriceps and grip strength, she notes, are predictors of longevity. From rock climbing to yoga, a blend of strength and flexibility extend health span. Exercise also produces BDNF (Brain-Derived Neurotrophic Factor), which supports neuroplasticity and cognitive function.

She recommends a blend of strength, flexibility, and balance training—from weightlifting to everyday “exercise snacks” like resistance band curls between tasks. The message: it’s never too late to start, and simple steps make a big difference. They both extoll the virtues of a home gym to overcome obstacles for fitness.

The Takeaway

This episode is a powerful reminder that aging doesn’t have to mean decline. By prioritizing food quality, smart (targeted) supplementation, and regular exercise, we can not only add years to our lives but add life to our years.

As Dr. Hartwick puts it, “An ounce of prevention is worth a pound of cure.” Whether you’re in your 30s, 50s, or 70s, there’s no better time than now to invest in your health span.