is a Japanese competitive

swimmer Swimming is an individual or team racing sport that requires the use of one's entire body to move through water. The sport takes place in pools or open water (e.g., in a sea or lake). Competitive swimming is one of the most popular Olympic ...

who specializes in the 200-meter butterfly. In this event she won the world title in

2015 File:2015 Events Collage new.png, From top left, clockwise: Civil service in remembrance of November 2015 Paris attacks; Germanwings Flight 9525 was purposely crashed into the French Alps; the rubble of residences in Kathmandu following the Apri ...

and bronze medals at the

2012 File:2012 Events Collage V3.png, From left, clockwise: The passenger cruise ship Costa Concordia lies capsized after the Costa Concordia disaster; Damage to Casino Pier in Seaside Heights, New Jersey as a result of Hurricane Sandy; People gather ...

and

2016 Olympics ) , nations = 207 (including IOA and EOR teams) , athletes = 11,238 , events = 306 in 28 sports (41 disciplines) , opening = 5 August 2016 , closing = 21 August 2016 , opened_by = Vice President Michel Temer , cauldron = Vanderlei Cordeiro ...

. Hoshi studied

sports science Sports science is a discipline that studies how the healthy human body works during exercise, and how sport and physical activity promote health and performance from cellular to whole body perspectives. The study of sports science traditionally inc ...

Waseda University , abbreviated as , is a private university, private research university in Shinjuku, Tokyo. Founded in 1882 as the ''Tōkyō Senmon Gakkō'' by Ōkuma Shigenobu, the school was formally renamed Waseda University in 1902. The university has numerou ...

in Tokyo, and enjoys

shopping Shopping is an activity in which a customer browses the available goods or services presented by one or more retailers with the potential intent to purchase a suitable selection of them. A Retail#Shopper profiles, typology of shopper types ha ...

in her spare time. In 2006, she showed symptoms of

Graves' disease Graves' disease (german: Morbus Basedow), also known as toxic diffuse goiter, is an autoimmune disease that affects the thyroid. It frequently results in and is the most common cause of hyperthyroidism. It also often results in an enlarged thyr ...

, a condition that results in an overactive

thyroid The thyroid, or thyroid gland, is an endocrine gland in vertebrates. In humans it is in the neck and consists of two connected lobes. The lower two thirds of the lobes are connected by a thin band of tissue called the thyroid isthmus. The thy ...

and frequent fatigue. Her thyroid gland was removed in November 2014, and in January 2015 she returned to competitions. Earlier in 2011 she was named Best Athlete of the Year by the Saitama Swimming Federation.

References

Japanese female butterfly swimmers 1990 births Living people Olympic swimmers of Japan Swimmers at the 2008 Summer Olympics Swimmers at the 2012 Summer Olympics Swimmers at the 2016 Summer Olympics Olympic bronze medalists for Japan Olympic bronze medalists in swimming Sportspeople from Saitama (city) Waseda University alumni Asian Games medalists in swimming Swimmers at the 2010 Asian Games Swimmers at the 2014 Asian Games Medalists at the 2012 Summer Olympics World Aquatics Championships medalists in swimming Medalists at the 2016 Summer Olympics Universiade medalists in swimming Asian Games gold medalists for Japan Asian Games silver medalists for Japan Medalists at the 2010 Asian Games Medalists at the 2014 Asian Games Universiade silver medalists for Japan Medalists at the 2011 Summer Universiade 21st-century Japanese women {{Japan-swimming-bio-stub