Complex sentence: She suffers from a rare congenital disease which, among other symptoms, impedes her from accumulating body fat, and which resulted in bullying during her childhood and early youth and ultimately inspired her to take up motivational speaking.
Split into simpler sentences: She suffers from a rare congenital disease which, among other symptoms, impedes her from accumulating body fat. This condition resulted in bullying during her childhood and early youth and ultimately inspired her to take up motivational speaking.