Your body weight plays a large part in your joint health: The less you weigh, the less strain you place on your joints. When you walk down stairs, your knees absorb a force up to five times greater than your body weight [source: Page]. Even when walking on a flat surface, your joints will moan and groan under too much of a load. A healthy diet is one way to keep excess pounds off.
If you're a heavy coffee drinker, you may want to consider cutting down or switching to a half-caffeinated coffee blend. Caffeine has been shown to weaken bones, and weaker bones lead to weaker joints. Nutritional supplements like glucosamine may help ease joint pain. Foods rich in omega-3 fatty acids, such as fish and nuts, can help decrease inflammation of the joints. Calcium, which can be obtained through vegetables like broccoli and spinach, helps prevent and reduce bone loss. Vitamin D helps your body absorb calcium from the food you eat. Your body produces vitamin D when it's exposed to sunlight, so those living in cooler climates may need to take supplements.