As we age, our bodies change and we may face different health challenges. Here are some surprising ones: 1. Weakened Immune System: After age 65, our immune system isn’t as strong, making us more susceptible to illnesses like the flu. 2. Weight Gain and Muscle Loss: Aging can make it harder to maintain a healthy weight and muscle mass, which can lead to conditions like obesity and arthritis. 3. Sleep Changes: Our sleep patterns change, making it harder to get enough rest, which can affect our memory and mood. 4. Nutritional Needs: Older adults often need more vitamins and nutrients, like B12, calcium, and vitamin D, but may not absorb them well from food. 5. Risk of Falls: Balance issues and conditions like osteoporosis make falls more dangerous for older adults. Keeping active and following a healthy diet can help manage these challenges.