Ketoviante Australia As the problem of obesity and overweight are spreading widely, it is very common with the people that they have a higher chance to gain weight unintentionally. It is when the weight put on without consuming extra food and without decreasing your activity. It’s habitually due to fluid retention, pregnancy, abnormal growths, and constipation. It can be rapid, periodic or continuous. Ketoviante Australia Periodic and rapid unintentional weight gain includes regular fluctuations and may be due to medication side effects respectively.