You better double check because 1,000 calories per day is what is recommended for a sedentary infant! That is a total anorexia amount for an adult. According to the NIH, active adult females should be getting 2,400 calories per day, adult males 3,000.
My original post answers your question, but to explain it again, if you don't have a vaginal yeast infection or oral thrush, you don't have a candida problem. If you do have any of those types of candida infections, not eating enough calories causes malnutrition which weakens your immune system leaving you more susceptible infections, such as colds, flu, or candida infections.
Please check how many calories you're averaging a day.