Research shows that people who consistently sleep less than six hours recover more slowly from infections and may respond less effectively to vaccines. Some studies suggest this reduced immune response is more pronounced in men, while hormonal differences may cause more variability in women. Either way, insufficient sleep weakens the body’s natural defenses over time.
The Link Between Sleep and Anxiety
Poor sleep and anxiety often create a self-reinforcing cycle. Lack of rest increases anxiety levels, while heightened anxiety keeps the brain stuck in “fight or flight” mode, making it harder to fall asleep.
When the brain is constantly scanning for threats, emotional resilience drops. Stress feels heavier, small problems seem overwhelming, and positive experiences are harder to enjoy. Over time, this combination can significantly affect mental health, increasing the risk of chronic anxiety and emotional exhaustion.
