Levine concludes that some core practices — close doctor-patient communication, tracking weight and food diaries — still are in use.
The challenge is to find a balance between helpful advice and nagging, said Dr. Mladen Golubic of the Cleveland Clinic Wellness Institute. Some of the clinic's patients opt for daily, personalized emails to track their progress.
"You don't want to be harsh," Golubic said. But "you need to nudge them."
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