This is particularly true when the individuals giving suggestions aren't truly nutrition professionals, which is unfortunately typically the case on social media. On Instagram, anybody can call themselves an "expert" or "nutritionist," once they have no schooling or credentials, McMordie says. If you're on the lookout for nutrition info, you have to be consulting a registered dietitian (RDs or RDNs) or anyone with a complicated nutrition diploma, she says. When registered dietitians work with shoppers, they take the individual's medical historical past and way of life elements under consideration before they make any recommendations, she says. "There are so many conditions that are affected by diet, so it's best to consult a doctor or dietitian when making a big change to your diet," she says. And a PDF simply cannot do this.