I think it's coincidental more than anything else. even if your workplace programme was carried out by VHI Occupational health team, I don't think they'd be allowed to retain your personal information in that manner. And if it that screening was carried out by anyone else, they definitely wouldn't be allowed to inform VHI unless VHI needed it for verification of a claim (and even then I'm not sure VHI would ask).
VHI have started a programme of diabetes and cholesterol screening. They concentrated on Dublin last year and they're taking it further this year. See here - [broken link removed].