The "100 breakthrough health discoveries BBC" refers to a special magazine issue from BBC Science Focus rather than a single comprehensive online article or list. 
The magazine features an ultimate guide to living a longer, healthier, and happier life based on expert research. Key areas covered in the special issue include: 
While a full list of all 100 discoveries is not available publicly online, various general health breakthroughs and ongoing research covered by the BBC and Science Focus over the years include: 
National Geographic's Blue Zones research highlights areas with high concentrations of centenarians, revealing science-backed lifestyle principles—the "Power 9"—including natural movement, strong social ties, purpose (Ikigai), plant-based diets (beans, vegetables), and mindful eating (80% rule), showing that genetics account for about 20% of longevity, with lifestyle playing a crucial role in extending healthy life. 
What Are Blue Zones?