Everly Health Inc. has acquired women's health startup Natalist in a landmark deal involving a pair of female founders and CEOs. Charleston, South Carolina-based Natalist, which offers conception and pregnancy essentials in thousands of retail locations, has been acquired in a multimillion-dollar, all-cash deal announced Oct. 21. The acquisition price was not disclosed. It's the third acquisition of 2021 for Everly Health, which in March acquired national clinician network PWNHealth and self-collected…