What causes poor memory?

Memory decline is a complex phenomenon that may be caused by various factors. Specifically: 1. **Physiological factors**: With aging, brain function gradually declines, leading to weakened memory; long-term lack of sufficient sleep can impair brain function and result in poorer memory; prolonged mental concentration and intellectual work can increase fatigue and reduce sensitivity to external stimuli, affecting memory. 2. **Psychological factors**: Emotional depression, excessive stress, or psychological trauma may cause distraction, thus affecting information encoding and storage. 3. **Pathological factors**: Numerous diseases can lead to memory impairment, including neurological disorders such as Alzheimer's disease, Parkinson's disease, brain tumors, and cerebrovascular disease, as well as metabolic disorders like diabetes and hypothyroidism. Brain injuries, infections, and poisoning may also damage memory. Nutritional deficiencies can impair normal brain and nervous system function, leading to memory decline. If symptoms persist or worsen, timely medical evaluation is recommended.