What diseases took the lives of most slaves while on board the slave ships?

Most slaves on board slave ships succumbed to diseases such as dysentery, smallpox, and measles, exacerbated by the cramped and unsanitary conditions of the ships. Malnutrition and dehydration also played significant roles in their high mortality rates. The lack of proper medical care and the stress of the journey further contributed to the spread of Infectious Diseases among the enslaved population. Overall, an estimated 15-25% of slaves perished during the Middle Passage due to these health issues.