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Angio = Blood vessel, Lathyrism = disease due to Lathyrus Sativus. It is commonly associated with osteolathyrism and neurolathyrism and is caused by over consumption of Lathyrus sativus, also known as grasspea. The main chemical responsible is β-Aminopropionitrile, which prevents collagen cross-linking, thus making the blood vessel, especially the tunica media, weak. This can result in Cystic medial necrosis or a picture similar to Marfan syndrome. The damaged vessels are at an increased risk of dissection.