LighterLife diet

The LighterLife weight loss plans combine a very low-calorie meal replacement diet with weekly counselling. With LighterLife Total, for people with a BMI of 30 or more, you eat four "food packs" a day, consisting of shakes, soups, mousses or bars, and no conventional food. LighterLife Lite, for those with a BMI of 25-30, involves eating three food packs a day plus one meal from a list of approved foods. You stay on the plans until you reach your target weight. The meal plans can lead to very rapid weight loss and you’re advised to see your GP before starting. How long you stay on the diet depends on how much weight you have to lose.

Pros:

The counselling can help you understand your relationship with food, so hopefully you can make lasting changes to keep the weight off for good. With the meal replacements, there’s no weighing or measuring, so it’s a hassle-free approach to weight loss.

Cons:

Initial side effects of the diet can include bad breath, a dry mouth, tiredness, dizziness, insomnia, nausea and constipation from cutting down on carbs and fibre. Surviving on a strict diet of shakes and soups and other meal replacements isn’t much fun and can feel socially isolating.

BDA verdict:

Rapid weight loss can be motivating but it is unsustainable. LighterLife’s VLCD and its counselling component may work for some, particularly people who have struggled to lose weight for years, have health problems as a result of their weight and are clinically obese with a BMI of more than 30. A VLCD that involves eating 1,000 calories a day or fewer should not be followed for more than 12 continuous weeks. If you are eating fewer than 600 calories a day, you should have medical supervision.

      WeightWatchers diet

The WeightWatchers plan is based on the ProPoints system, which gives a value to foods and drink based on protein, carbs, fat and fibre content. It is essentially a calorie-controlled diet where you get a personal daily ProPoints allowance, which you can use how you like. There’s no limit on the amount of fruit and most veg you can eat. You also get a weekly ProPoints safety net in case you go over your allowance, and an individual exercise plan. The weekly meetings and confidential weigh-ins provide support and extra motivation to encourage long-term behaviour change. The plan is designed to help you lose up to 2lb a week.

Pros:

No foods are banned so you can eat and drink what you want providing you stick to your points allowance. The ProPoints system is easier to follow for some than calorie counting and less restrictive than other plans. This is because it introduces a safety net of points, which can be saved up for a special occasion, such as a night out, a small amount of alcohol or treats.

Cons:

When you begin, working out the points system can be just as time-consuming as simply counting calories. Some people feel pressured into purchasing WeightWatchers branded foods.

BDA verdict:

The ProPoints plan is generally well balanced and can be a foundation for long-term changes in dietary habits. The support group approach can help keep people motivated and educate them about healthy eating. But it’s vital that you make the connection between the points system and calories if you want to avoid putting the weight back on once you leave the programme.