OPTIFAST
The OPTIFAST Weight Loss Programme is based on a very low-calorie diet (VLCD). A VLCD is a low carbohydrate, total food replacement for the dietary management of obesity. It provides roughly 800 kcal (or 3400 kJ) of energy per day, for the first 8 weeks (Intensive phase) whilst consisting of sufficient protein, fatty acids, carbohydrates, vitamins and minerals for safe and rapid weight loss. This enables your body to use its fat stores as energy via a process called Ketosis.
Depending on an individual, conventional weight loss diets contain more than twice the amount of energy daily. The Programme has shown to significantly reduce body weight by 1 – 2.5 kg per week. It consists of three scientifically formulated products (shakes, bars or vegetable soups) taken daily for 8 weeks as a meal replacement, with low-carb vegetables and salad as desired. After the initial 8-week period, a 4-week period of gradual food reintroduction follows.
Weight loss achieved with VLCDs has also been associated with improvements in:
- insulin sensitivity
- blood pressure
- triglycerides
- sleep apnoea and
- blood sugar levels in adults.