In 1978, 58 people died in the United States after following very-low-calorie liquid protein diets. Following this event, the FDA requires since 1984 that protein VLCDs providing fewer than 400 calories a day to carry a warning that they can cause serious illness and need to be followed under medical supervision. However, newer regulations require this warning only on protein products that aim to provide more than half of a person's calories and promoted for weight loss or as a food supplement. That way, protein VLCD drinks such as Slim-Fast, although each providing less than 400 calories, were able to avoid warnings by recommending that users "also eat one sensible meal each day".