There's a stretch of forest in northern Finland where birch grows in conditions that exist almost nowhere else. Winters long enough to stop most things growing. Cold that would kill a softer tree. Then twenty hours of daylight in a summer that arrives all at once. Trees that survive that produce bark with the highest natural concentration of D-Mannose on earth. Not because anyone engineered it. Because that's what surviving there requires. That bark is where this protocol starts. Watch what fourteen days of it does. ▶️
Not enough history yet to show a trend.