Cornelia "Nina" Channing (1938-1985) was an American professor of physiology at the University of Maryland School of Medicine.
 Her research focused on endocrinology and fertility; along with longtime collaborators Neena Schwartz and Darrell Ward, she was involved in the discovery of hormones involved in regulating the female reproductive cycle.
 She died of breast cancer in 1985.
Ruth Smith Lloyd (January 17, 1917 – February 5, 1995) was a 20th-century scientist whose research focused on fertility, the relationship of sex hormones to growth, and the female sex cycle.
 She earned a Ph.D. in the field of anatomy from Western Reserve University in 1941, making her the first African-American woman to have reached this achievement.
 Lloyd worked on the faculty of medicine at Howard University from 1942 to 1977.
 She married physician Sterling Morrison Lloyd in 1939, and had three children.
 She died of cancer in 1995.
Aaryn Elizabeth Gries Williams (née Gries; born September 3, 1990) is an American reality television personality and former model from San Marcos, Texas.
 She is best known for her appearance as a contestant on the reality television show "Big Brother 15", during which she became the subject of controversy due to racist, homophobic, and bigoted comments she made while competing on the program.
 She is currently a ranch owner and operator, and a YouTube vlogger.
Kimberly Kardashian West (born Kimberly Noel Kardashian; October 21, 1980) is an American reality television personality, socialite, actress, businesswoman and model.
 Kardashian first gained media attention as a friend and stylist of Paris Hilton, but received wider notice after a 2003 sex tape with her former boyfriend Ray J was leaked in 2007.
 Later that year, she and her family began to appear in the E! reality television series "Keeping Up with the Kardashians".
 Its success soon led to the creation of spin-offs including "Kourtney and Kim Take New York" and "Kourtney and Khloé Take Miami".
 Kardashian's personal life soon became subject to widespread media attention.
Shahs of Sunset is an American reality television series that airs on Bravo.
 The series debuted on March 11, 2012.
 The series follows a group of Iranian American friends living in Beverly Hills (and the greater area known as "Tehrangeles"), who are trying to juggle their active social lives and up-and-coming careers while balancing the demands of their families and traditions.
 It is the second American reality television show about Iranians after E!'s "Love Is in the Heir" in 2004.
 The series originally focused on Reza Farahan, Golnesa Gharachedaghi, Sammy Younai, Asa Soltan Rahmati, Mike Shouhed and Mercedes Javid.
 The series still focuses on the same cast albeit featuring Shervin Roohparvar in place of Younai.
 Younai who was demoted to a recurring capacity in the second season and made guest appearances in the third and fourth seasons while Roohparvar joined in a recurring capacity in the fourth before gaining a starring role in the fifth.
 Past shahs include Lilly Ghalichi (season 2-3) and Asifa Mirza (season 4).
Kendra on Top is an American reality television series on WE tv that debuted June 5, 2012.
 The series follows the day-to-day life of former "Playboy" model and "The Girls Next Door" reality television personality Kendra Baskett as she balances motherhood and her business ventures.
 Season 2 chronicles Wilkinson as she prepares and participates as a celebrity contestant on "Splash" and stars on "Celebrity Wife Swap".
 The series also documents the activities of her husband, Hank Baskett, as he works on his transition from NFL football player to businessman.
 Kendra's car accident that occurred in April 2013 is also included.
 WE tv renewed "Kendra on Top" for a fourth season which premiered on August 21, 2015.
 WE tv renewed "Kendra on Top" for a fifth season which premiered on April 1, 2016.
Farrah Lynn Abraham (born May 31, 1991) is an American reality television personality.
 Born in Omaha, Nebraska, and raised in Council Bluffs, Iowa, she received public attention after being cast in the reality television series "16 and Pregnant" in 2009, which documented the pregnancies and first months of motherhood for several young women.
 Later that year she was cast in the spin-off series "Teen Mom", and appeared in each of its four seasons until its conclusion in 2012.
 That August she released her debut studio album and first memoir, both of which were titled "My Teenage Dream Ended".
 The book made it onto The New York Times Best Seller list.
Danielle Colby (born December 3, 1975) is an American reality television personality who co-stars on the History reality television show "American Pickers".
Darrell Ward (August 13, 1964 – August 28, 2016) was an American reality television personality.
 He was a truck driver featured on "Ice Road Truckers", starting on season 6 in 2012.
 He was from Deer Lodge, Montana, and died in a plane crash.
Kylie Kristen Jenner (born August 10, 1997) is an American reality television personality, model, entrepreneur, socialite, and social media personality.
 She is best known for starring in the E! reality television series "Keeping Up with the Kardashians" since age nine, her eponymous brand of cosmetics, and her large social media presence.

Question: What American reality television personality was involved in research focused on endocrinology and fertility?
Answer: Darrell Ward