Dangosodd yr ymchwil fod ymweliadau â’r meddyg teulu ynghylch salwch resbiradol yn cwympo bron 4% ymhlith y rheini oedd wedi elwa ar gynllun Nyth.  Gwelwyd cynnydd o bron 10% yn y grŵp rheoli dros yr un cyfnod.
The research found GP events for respiratory illness fell by almost 4% for those who had benefited from Nest improvements, while these rose by almost 10% in the control group over the same period.