Vaginal thrush is a yeast infection caused by Candida albicans or other types of fungus that occur naturally in the vagina.
Anti-thrush (anti-fungal) treatments are widely available, including tablets, creams and pessaries.
Some women try a dietary approach in trying to prevent recurrence of thrush. However, there is no evidence to support this and most experts do not believe adjusting what a woman eats is an effective approach to preventing Candida.
Yoghurt and probiotics for Candida
Applying plain bio-live yoghurt to the vulva is one way some women seek relief from thrush. Although the NHS says this won’t do any harm, evidence is lacking for its effectiveness.
Some women also eat plain live yoghurt or take probiotic supplements to try to prevent vaginal thrush, but again the NHS says there's no firm evidence these measures are effective at preventing thrush.
Changing diet to avoid Candida
Because thrush is a yeast infection, some people believe changes to a woman's diet help prevent thrush. Many books have been written on the subject. The approach is to identify trigger foods or to follow a yeast-free or sugar-free diet.
However, there is no evidence at all that these diets have any effect.
The Mayo Clinic in the US says that people who follow a diet that cuts out processed sugar and white flour may start to feel better in general. However, it says feeling better and more healthy is down to the move to fresh foods and wholegrains and not due to any prevention of yeast growth in the gastrointestinal tract.