As the global population lives longer, Hong Kong remains a standout leader in life expectancy. According to the 2022 data from the Hong Kong Census and Statistics Department, local men now live an average of 80.7 years, while women reach 86.8 years—numbers that have consistently ranked among the highest worldwide. But longevity isn’t just a statistical trend; it is a philosophy practiced daily by the world’s oldest citizens. Few embody this better than Dr. William, a retired British physician who just celebrated his 101st birthday and worked in medicine until the age of 85.
Dr. William’s 4 Longevity Habits
Dr. William recently opened up about the lifestyle principles he has followed for decades. His advice is refreshingly simple and accessible to anyone looking to age better.
- Eat Sardines Daily: Since the age of six, Dr. William has made sardines a non-negotiable part of his diet. These small, oily fish are packed with omega-3 fatty acids, calcium, and vitamin D—nutrients strongly linked to heart and brain health.
- Cook Everything from Scratch: He avoids processed foods and takeaways entirely. By preparing his own meals, he controls exactly what goes into his body, minimizing salt, sugar, and unhealthy fats.
- Stay Engaged and Keep Working: Dr. William didn’t fully retire until 85. He credits staying intellectually active and maintaining a sense of purpose as one of the cornerstones of his long life.
- Move Every Day: Consistent, low-impact physical activity keeps his body agile. For centenarians, routine movement often matters more than intense exercise.
The Science That Supports Him: Harvard Weighs In
Dr. William’s emphasis on diet perfectly aligns with a major study published in the American Journal of Clinical Nutrition in January 2024. Researchers from Harvard University tracked the eating habits of 48,762 health professionals aged 38 to 59 over several decades.
The findings were striking. Participants who consumed the highest amounts of plant-based proteins—such as legumes, nuts, and whole grains—had a 46% higher chance of healthy aging. This was defined as reaching older age free of cognitive decline, chronic disease, and physical disability.
What Does This Mean for Your Plate?
While Dr. William highlights the benefits of fish (an animal protein), the Harvard study suggests that diversifying protein sources toward plants can be transformative. However, nutritionist Minmin Gao cautions that plant proteins are often incomplete proteins, meaning they lack one or more essential amino acids.
“To get the full benefits, pair your proteins wisely,” Gao advises. “Think beans with rice, hummus with whole-wheat bread, or edamame with quinoa.” Top plant-based protein sources include seitan, lentils, pumpkin seeds, chickpeas, and edamame.
For optimal health, experts recommend consuming 0.8 grams of protein per kilogram of body weight daily—whether from plants, fish, or a strategic mix of both.
The Takeaway for Hong Kong Readers
In a fast-paced food capital like Hong Kong, longevity might seem like a distant goal. Yet Dr. William and Harvard send the same message: small, consistent habits matter more than extreme diets or expensive supplements. Whether it’s adding sardines to your weekly rotation, swapping red meat for lentils, or simply cooking at home more often, the path to a longer, healthier life is already on your plate.
The wisdom of those who have lived past 100, now backed by modern science, provides a roadmap that is both practical and profound for anyone hoping to add years to their life—and life to their years.