[jader201]

It appears this study does not conclude whether abstainers should pick up caffeine.

Under "Conclusions and Research Needs":

> Last, in terms of applications of the potential beneficial effects of coffee intake, it is worth studying whether introducing or initiating regular coffee consumption among current abstainers yields positive cardiovascular health benefits.

In other words, more study is needed to determine whether abstainers should start consuming caffeine.

Additionally, the study suggests much of the cardiovascular benefits are from non-caffeine compounds in coffee/tea:

> Although much of the evidence on caffeine derives from studies of coffee consumption, coffee contains numerous bioactive compounds beyond caffeine, including chlorogenic acids, diterpenes, trigonelline, and melanoidins. In large cohort studies, inverse associations between coffee intake and risk of type 2 diabetes and cardiovascular disease have also been observed for decaffeinated coffee, supporting a role for noncaffeine components.

[ipaddr]

Abstainers become regular drinkers in 2 weeks if they keep drinking coffee. What can be gained from testing abstainers for medium or long term health effects