Great question. This is an area on continued research in the coffee realm but here are some of factors that may impact health: freshness, roast level (the lighter the roast, the more health benefits), elevation and location where the coffee is grown, how the green coffee is processed, varietals (this means different coffee tree sub-types) and even possibly different brewing methods. In the coffee community, we’re not sure yet exactly what role some of these variables play in health benefits – and there may even be another variable not listed here! At Umble, we think in the next 10-20 years, we’ll see some of this fleshed out a little more, so stay tuned!