Multiple choice Which of the following cestodes can lead to megaloblastic anaemia? Taenia saginata Hymenolepis nana Diphyllobothrium latum Spirometra spp. Reveal answer Fill a bubble to check yourself C Correct answer Explanation Diphyllobothrium latum, also called fish tapeworm, causes severe vitamin B12 deficiency due to the parasite absorbing 80% of it. This leads to megaloblastic anaemia.