These two websites have many in-depth articles well worth reading.
https://www.swimming.org/justswim/
and https://www.swimming.org/swimengland/
Follow the links to these webpages and you will find there are many articles related to swimming and health and swimming education. There’s an excellent article about swimming with asthma and quoting that some of Britains most successful swimmer suffer from asthma. There are articles about swimming after a stroke. About swimming with muscular skeletal conditions, mental health and quite a few other health conditions are covered where swimming is a benefit .
Then did you know, 70% of school children have their lessons withdrawn before they have been taught to swim confidently.Vital skills, such as treading water for 30 seconds or floating to live for 60 seconds are being missed. Teaching swimming and water safety during Key Stage 1 or 2 is a requirement of the national curriculum PE programme of study.
