Even with lots of coaching, people can’t stick perfectly to diets that require them to eat a lot more protein or less fat—most end up eating closer to their old habits, but still lose weight.

Among obese adults with multiple micronutrient deficiencies, those taking a bariatric-specific multivitamin followed their regimen 92% of the time, while those taking standard supplements followed theirs 70% of the time.

Obese adults with multiple micronutrient deficiencies who took a bariatric-specific multivitamin took one supplement per day on average, while those taking multiple targeted supplements took 3.5 per day.