**Maintaining Optimal Memory** **Memory Decline by Age:** 1. **Short-term Memory:** Begins to decline from age 24. 2. **Instant Judgment:** Declines starting from age 29. 3. **Word Recall:** Begins to diminish from age 35. 4. **Language Comprehension and Expression:** Starts to decrease from age 54. **Impact of Abdominal Obesity in Middle Age:** - Increased risk of Alzheimer’s disease and dement..