Assertion: collagen | /r/HasSubevent | wrinkle
Facets:
Source sentences:
text: As we age, we produce less collagen, which leads to wrinkles, sagging skin, and weakened joints.
text: As we age, collagen naturally breaks down and diminishes over time - leading to the early signs of aging (including wrinkles, thinning hair, brittle nails and weaker joints).