Yes—synthetic hormones called progestins can influence the growth of meningiomas, tumors in the tissue covering the brain. Progestins are medicines that act like Progesterone. A 2026 review in *Neurosurgical Focus* examines their link to these tumors. It brings together earlier findings rather than testing a new treatment. The review covers tumors linked to progestin use and tumors linked to pregnancy. The authors look at who develops these tumors and how they behave. They also examine the tumors’ biology and how their tissue looks. The source says progestins’ influence on tumor growth has long been known. More recent reports of tumors linked to synthetic progestins have prompted closer study. The key distinction is medicine use versus a blood test result. This source focuses on hormone-linked tumors, not a target blood level. The supplied summary gives no risk percentages or number of people studied. It also gives no drug names, doses, or lengths of use. That means it cannot tell us how much risk changes with a specific medicine. Nor does it show that a higher Progesterone result means higher tumor risk. For BioSocial members, this is useful context when comparing hormone-related notes. A lab value and a medicine history answer different questions. Keeping test dates and medicine details alongside uploaded bloodwork can make community comparisons clearer. Those notes add context; they do not turn this review into a personal risk score. What context do you record alongside your hormone results to help others understand your numbers?