8. Dehydration
Your brain is about 75% water. Even mild dehydration (losing just 2% of body water) can impair attention and immediate memory skills.
Dehydration causes brain tissue to shrink away from the skull. While it plumps back up when you rehydrate, chronic dehydration keeps the brain in a state of stress. The Fix: Keep water nearby. As we age, our thirst mechanism weakens, so don’t wait until you feel thirsty to drink.
9. Staying in the Dark
Lack of natural light can lead to depression and slow cognitive function. Sunlight helps your body produce Vitamin D, which is crucial for brain health. Low levels of Vitamin D have been linked to a faster decline in cognitive abilities.
Furthermore, natural light regulates your circadian rhythm, helping you sleep better (Habit #1). The Fix: Try to get at least 15-20 minutes of natural sunlight every morning.
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