Exploring the Link Between Weight Gain and Relationship Health: Insights from Experts

“When a woman feels safe with her partner, the level of cortisol—the body’s primary stress hormone—drops. At the same time, the production of oxytocin and serotonin increases. This shift helps the body relax, conserve energy, and prepare for potential pregnancy. During this process, metabolism slows and appetite often rises. These changes are completely natural,” says Kate Novaya, an integrative doctor and self-described 'biohacker' who goes by @doctor.novik on Instagram.