Some of controversy of controversy because they are

Some investigational studies spark controversy for overall ethical
reasons.

One of the problems with debates is with animals. Animals
spark a lot of controversy of controversy because they are prone to be the
major subjects and studies and experiments during public health concerns. A lot
of people ask if it is right to harm animals to try to improve the lives of
people. Animals cannot provide informed consent. They are not aware of the consequences
when becoming the subjects to these experiments.  

Another reason that the investigational studies raise debate
is from lack of data and how accurate the data that is collected really is.

In human subjects investigational studies sparked
controversy when consent was not given. In the past researchers would use these
subjects or to experiment different problems and diseases. They never gave
written consent.

Another question is it safe to give humans different _____ and
is it safe. Some researchers believe that a placebo should be used to test
diseases before being administered to human subjects.

According to “Ethical Considerations” (n.d.), One ethical
statement that created a standout amongst the most notorious examples of
deceptively performed tests was the Tuskegee test. From 1932 to 1972, the U.S.
General Health Service looked to contemplate the common movement of untreated
syphilis in poor, black men who thought they were accepting free social
insurance from the U.S. government. (“Ethical Considerations”, n.d.).

In brief “Ethical Considerations” (n.d.) found that out of
the 600 men engaged with the examination, 399 had beforehand contracted
syphilis before the investigation; they were never told they had syphilis,
nonetheless, and were persuaded they were getting free broad therapeutic care. (“Ethical
Considerations”, n.d.). A standout amongst the most deceptive parts of the
examination was that by 1947, penicillin was broadly perceived as the standard
treatment for syphilis. In any case, the African American men associated with
the examination were not given the treatment that could cure them, and kept on
being contemplated for a long time after a cure had been found. Before the
finish of the investigation in 1972, just 74 of the guineas pigs were as yet
alive (“Ethical Considerations”, n.d.).

Reference

Ethical
Considerations in Research. (n.d.). Retrieved December 22, 2017, from
https://courses.lumenlearning.com/boundless-psychology/chapter/ethical-considerations-in-research/