It is important to mention that HRV is a biomarker that can be recorded and analyzed independently without needing another study, such as CPET
CT can lead to long-term sequelae, presenting challenges that extend beyond the active treatment period
21 PCOS is also associated with complications of both pregnancy and delivery, including miscarriage, gestational diabetes, gestational high blood pressure, preeclampsia, preterm delivery, and perinatal death, as well as increased need for labor induction and Cesarean-section
They concluded that while GHK-Cu does demonstrate anti-wrinkle effects in cellular studies, "there is a surprising absence of clinical studies using them." The review identified skin permeation as the central challenge: GHK's high aqueous solubility and low partition coefficient work against transdermal absorption
doi: 10.1111/j.1742-4658.2009.07018.x 162
Psychoneuroendocrinology 95, 97105