Hidden Causes of Fatigue That Go Beyond Lack of Sleep

11. Allergies: The Subtle Energy Drain

Seasonal or year-round allergies can be a surprising cause of fatigue. Allergic reactions trigger an immune response, which can leave the body feeling drained. Additionally, the nasal congestion and inflammation caused by allergies may interfere with breathing, particularly during sleep, leading to poor rest and daytime drowsiness. Antihistamines, commonly used to treat allergies, can also contribute to fatigue as a side effect. Managing allergies with non-drowsy medications, allergen avoidance, and air purifiers can help reduce their impact on energy levels.

12. Blue Light Exposure: The Sleep Disruptor

Prolonged exposure to screens emitting blue light—such as smartphones, computers, and TVs—can disrupt the body's natural sleep-wake cycle. Blue light suppresses melatonin production, the hormone responsible for regulating sleep, making it harder to fall asleep and stay asleep. This disruption can lead to fatigue during the day. Limiting screen time before bed, using blue light-blocking glasses, or enabling night mode on devices can help restore the body's natural rhythms and improve energy.