A study by new Cornell discovery, the researchers suggests focusing on what to eat than what not to eat. To prove this, the researchers analyzed 43 published international studies that involved either negative or positive nutrition messages. They found that while negative messages tended to work best with experts like dietitians and physicians who were highly involved and knowledgeable in the area, most people who did not know a lot about nutrition would rather be told what they should eat and why it is good for them.
The lead author Brian Wansink suggested that telling your child to eat an apple so they stay healthy will work better than telling them not to eat the cookie because it will make them fat. In short, stressing the benefits of eating healthy foods is more effective than warning against the harms of eating unhealthy foods.