Hahahaha YEAH, my endocrinology internship PI taught me that estrogen (and testosterone) actually acts as an osteoblast activator of sorts, so more calcium is integrated into the bone matrix. So that's why women after menopause get osteopenia--> osteoporosis, because they essentially stop producing estrogen, which leads to a low mineral
😳rganic matter ratio in their bone matrix, leading to a low bone density, leading to the disease. Osteopenia is just a lesser form of osteoporosis, which is the full-blown disease. This is also why men are less prone to getting osteoporosis, because we don't really go through a point in our lives when we stop producing testosterone so dramatically (once you stop having your menstrual cycle, there are no mature follicles/corpi luteum to secrete estrogen). This is like my favorite topic evar, hahaha.
Hmmmmm for physics, are you taking calc-based or algebra-based? For algebra-based, just do a ton of practice problems once you start actually taking the class, your algebra skillz come back. Don't bother reviewing that. For calc-based... good luck, because I suck epically at math and would fail calc-based physics