How many studies support Psychological Wellbeing?

Two independent meta-analyses link dispositional optimism to lower cardiovascular events and all-cause mortality, and a broader synthesis found psychological well-being predicts all-cause mortality independently of the absence of distress — suggesting wellbeing is not just the inverse of mental illness. That's backed by 9 published studies in Vitaebase's database, including 5 meta-analyses, the most recent from 2026 -- a fairly substantial body of research for a single topic.