Ever wonder why you get sick when you’re stressed or can’t sleep? A new study found that anxiety and insomnia are linked to way fewer natural killer (NK) cells—the immune system’s front-line defenders. Women with anxiety symptoms had 38% fewer NK cells, and bad sleep made things even worse. Scientists think stress hormones like cortisol might be to blame, but they’re still figuring out the details. Bottom line: your mental health and sleep habits really do mess with your body’s defenses! #Health #MentalHealth #SleepMatters