Most medical researchers say that there isn't a connection between acne and diet, unless someone actually has an allergy to a specific food. And acne can be affected by lots of different factors, including stress and genetics.
One researcher has suggested that eating lots of high-glycemic index foods (such as white flour, white bread, white pasta, potatoes and sugary foods) might aggravate acne, but it isn't clear yet if there's any evidence to support this.
People's bodies are different - since acne can be affected by so many different things, what works for one person might not work for another.
Even if it doesn't help your acne, though, drinking enough water and eating lots of fruit and vegetables will do wonders for your general health.
And it may well help improve your skin too - for example, dehydration can make your skin look tired and grey. Drinking water will fix that, and a healthy diet will help your skin heal spots more quickly.
So it may not be a magic acne cure, but it might help and it will certainly benefit your health all-round .