Health

8 Habits Smart People Ditch to Boost Their Intelligence

2025-08-30

Author: Wei

Unmasking the Myths of Intelligence

Intelligence isn't just a measure of what you know; it's also defined by your choices and habits. While many behaviors may initially seem beneficial or comforting, they can hinder your cognitive abilities and decision-making.

1. Kick the Sugar Habit

Consuming high amounts of sugar can spike your blood glucose levels, which isn't always a good thing. While glucose fuels the brain, excessive amounts can impair cognitive function. Studies reveal that high sugar intake lowers the production of brain-derived neurotrophic factor (BDNF), a vital protein for memory and learning, ultimately hindering your brain's ability to form new memories.

2. Limit Your Screen Time

The pandemic has forced many of us into extended screen time, but this can be detrimental to our mental well-being. Face-to-face interactions are crucial for maintaining strong mental health. Research indicates that individuals engaging more in personal communication during lockdowns experienced better mental well-being. Moreover, overexposure to screens can disrupt sleep patterns and elevate stress levels, so experts recommend limiting screen time to two hours outside of work.

3. Prioritize Sleep

Though sleep might seem like a luxury, it's essential for mental clarity and memory retention. Inadequate sleep disrupts the brain's information processing abilities, leading to memory gaps and cognitive decline. Experts advise maintaining a consistent sleep schedule and optimizing your sleep environment to enhance rest.

4. Stop Overeating

Overeating and poor dietary choices can have lasting negative effects on the brain. Research indicates that obesity can impair your brain's ability to process and detect nutrients effectively. Such dietary habits can lead to severe health risks—including heart disease and diabetes—that are also linked to cognitive decline.

5. Ditch Multitasking

Contrary to popular belief, multitasking can diminish focus and hinder productivity. Studies show that multitaskers struggle with attention and decision-making, ultimately taking longer to complete tasks. For optimal efficiency, concentrating on one task at a time is far more effective.

6. Protect Your Ears

Excessive noise can pose serious risks to both hearing and cognitive function. Research in Chicago revealed that a rise in ambient noise levels correlates with an increased risk of cognitive impairment. For those living in urban environments, investing in ear protection can safeguard your brain.

7. Move Your Body Daily

Sedentary lifestyles can lead to quick declines in insulin sensitivity and impair brain function. Regular physical activity is crucial for brain health, and studies indicate that signs of Alzheimer's can start developing in mid-life. Creating an active lifestyle early can significantly benefit cognitive longevity.

8. Manage Information Overload

The modern world bombards us with information, making it difficult for our brains to keep up. This overload can drain cognitive resources, leading to diminished focus and poor decision-making. By learning to prioritize and filter information effectively, you can enhance your mental clarity.

By identifying and eliminating these detrimental habits, you can unlock greater cognitive potential and empower yourself to think clearly and effectively.