Beware: These eight seemingly harmless habits can damage brain health

The brain is arguably the most valuable asset humans possess, yet its function is often disrupted by a range of daily habits performed covertly. Health conditions can deteriorate due to habits that seem trivial, such as excessive screen time on mobile phones and a reluctance to eat breakfast in the morning. Real Simple reported on Tuesday, 3 March 2026. “Multitasking may feel like you’re getting more done, but in reality it slows down and drains your brain,” says neuropsychologist and director of Comprehend the Mind, Sanam Hafeez, PhD. “Every time you switch from one task to another, your mind has to re-set, and that requires energy. Rather than making you more efficient, you end up burning mental resources,” she adds. To achieve tangible results, Hafeez advocates the Pomodoro technique, which involves focusing on one task for about 25 minutes, followed by a short break. This pattern of full focus and planned breaks gives the brain a chance to process your work deeply, keeping productivity and concentration high for extended periods. “Sleep cleanses toxins, consolidates memories, and restores brain function. And this is not just about the number of hours,” says clinical neuropsychologist and director of psychology at Gaylord Specialty Healthcare, Sarah Bullard, PhD. Bullard notes that health issues such as sleep apnoea, which impedes oxygen flow, are closely linked to vascular damage and an increased risk of dementia. In addition, integrative medicine practitioner Will Haas, MD, MBA, notes that many people neglect the dangers of chronic, low-level sleep deprivation that accumulate over time. “Over time, sleep debt reduces the brain’s ability to clear metabolic waste like beta-amyloid, which has been linked to cognitive decline and Alzheimer’s disease,” he says. “After a night’s sleep, the body has essentially fasted for several hours, and the brain needs fuel to get going,” Hafeez adds.