Mood·3 min read

Anxiety and insomnia linked to sharp drops in key immune cells

By InsideWellness Editorial · December 15, 2025

Originally published by ScienceDaily Stress.

Natural killer cells act as the immune system’s rapid-response team, but the stress of anxiety and insomnia may be quietly thinning their ranks. A study of young women in Saudi Arabia found that both conditions were linked to significantly fewer NK cells—especially the circulating types responsible for destroying infec

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InsideWellness Editorial

Our editorial team curates and writes on wellness research, beauty science, and evidence-backed lifestyle insights. See our editorial standards for how we source and review content.

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