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Dr. Shaima AlshareefLongevity & Lifestyle Medicine

Longevity

Adding life to years, not only years to life

Longevity medicine is not a promise of a longer life. It is the disciplined, evidence-based practice of protecting function — so the years you have are years you can use.

Healthspan vs lifespan

The number that people actually care about

Lifespan counts years. Healthspan counts the years lived in good function — moving well, thinking clearly, sleeping properly, staying independent. When patients describe what they want from the next thirty years, they almost always describe healthspan.

The gap between the two is where most suffering sits: a decade or more of reduced capacity at the end of life. Narrowing that gap is the practical goal of longevity-focused care.

What this looks like clinically

  • Reading risk trends over years rather than single results in isolation.
  • Measuring function — strength, fitness, balance — alongside disease markers.
  • Acting during the long window before a diagnostic threshold is crossed.
  • Building plans that fit a person's culture, work and family life.

The pillars

Eight areas that shape how you age

Prevention

Most chronic disease develops over years. Prevention is the deliberate use of that window — screening, trend-reading and early action while change is still easy.

Metabolic health

Blood pressure, lipids, glucose, waist and liver health behave as one connected system. Treating them together, early, is one of the highest-yield things medicine can offer.

Sleep

Sleep regulates appetite, glucose handling, mood, immunity and memory consolidation. Poor sleep undermines every other intervention.

Fitness

Cardiorespiratory fitness and muscular strength are among the most consistent markers associated with healthy aging — and both respond to training at any age.

Nutrition

A pattern built on vegetables, legumes, whole grains, quality protein and healthy fats, with fewer ultra-processed foods. Pattern beats individual nutrients.

Stress & resilience

Chronic stress has measurable physiological effects. Recovery practices, boundaries and social connection are clinical tools, not soft extras.

Brain health

Cognitive reserve is built through vascular health, movement, sleep, hearing care, learning and connection — largely the same levers as the rest of the body.

Precision health

Using an individual's data — history, measurements, laboratory results and context — to personalise the plan, rather than applying an average to everyone.

Questions

Frequently asked

What is longevity medicine?
It is preventive medicine with an explicit focus on trajectory: extending the years lived in good function, not only the number of years. It uses established clinical evidence — cardiometabolic risk management, fitness, nutrition, sleep and mental health — applied earlier and more systematically.
What is the difference between healthspan and lifespan?
Lifespan is how long you live. Healthspan is how long you live in good health and function — mobile, cognitively sharp and independent. Longevity-focused care aims primarily at healthspan.
Is longevity medicine available in Saudi Arabia?
Longevity-focused preventive services are developing within Saudi healthcare, including in Jeddah. Dr. Shaima Alshareef directs a longevity department focused on prevention, metabolic health and healthy aging.
Can lifestyle changes really change how I age?
Evidence consistently links physical activity, nutrition quality, sleep, not smoking, and cardiometabolic control with better long-term health outcomes. No intervention guarantees a longer life, but these factors are strongly associated with better function over time.
Do I need laboratory testing to start?
No. Most of the highest-impact changes involve movement, sleep, nutrition and stress. Testing helps personalise and monitor a plan, and should be interpreted by a clinician who knows your history.

See where you stand today

An educational estimate based on your habits and history — and a clear list of the changes that would matter most for you.