Sales of functional dairy drinks rose 43% to £315.4m last year, TNS Worldpanel figures show.
Probiotic drinks accounted for the biggest proportion of sales, rising 23.1% to £247.2m.
Sales of cholesterol-lowering products grew 210% to £61.7m, while new entrant blood pressure-related products clocked up £6.5m worth of sales.
The number one brand according to TNS Worldpanel was Danone Actimel, followed by Müller Vitality.
Penetration rose seven percentage points to 43% while frequency of purchase grew 5.9% to 10.7 a year. Trip spend rose 19.3% to £2.78 but price per pack fell 1.7% to £1.71. Own label products commanded just 5.5% of the market, though this was up from 4.9% in 2004.