Eggs
Chicken eggs are another one of the rare foods that actually contains collagen in the yolk and eggshell membranes. In fact, eggshell membrane supplements have become a popular natural remedy for improving joint health due to their collagen content. Eggs are also rich in sulfur, a trace mineral required for collagen production (10). Sulfur supports phase II liver detox, which is the phase of detoxification where your body is getting ready to eliminate environmental toxins (such as pollutants), which break down and interfere with the production of collagen.