Even if your interlocutor can, and even if the large scale studies run counter to your argument, that doesn't mean your experience is invalid.

Life isn't a double-blind randomised placebo-controlled study. There is no control group consisting of you and your cohort to measure against.

The scientific method is, I argue, on the whole, the wrong instrument to bear in these scenarios, at least because measuring the metrics affects the study group and publishing the resulted affects the society in which the study occurred.