Although the estimated thinning is small, about 19 to 23 μm or roughly 5 to 6% of the normal subfoveal choroidal thickness in healthy young adults33, as the choroid continues to thin with consistently high or increasing CRP levels, its ability to supply the outer retina may be reduced over time, possibly increasing the risk of future AMD from a young age. Here, CRP is linked to age-related macular degeneration.