👉 Terrible medical research includes unethical experiments that harm or exploit participants, such as the Tuskegee syphilis study where African American men were deliberately left untreated for syphilis to observe the disease's progression. Another example is the use of unproven and dangerous treatments like the infamous bloodletting practices, which were based on the mistaken belief that removing "bad blood" would cure various ailments, often causing severe harm or death to patients.