Nico is writing an essay about sugar and found the following excerpt.

Sugar has been determined to have cognitive effects on consumers. While glucose (sugar) is essential to proper brain function, an overabundance of this nutrient can have severe consequences for brain health. High-sugar diets can impair the production of a protein needed to maintain working synapses, which are the connections between nerve cells. Without an adequate amount of this protein, communication among synapses starts to break down, resulting in cognitive decline. Medical professionals are distressed by the overwhelming amounts of added sugar in heavily consumed foods. To break the desire to indulge in sweets, one may need to seek medical guidance.

– "Sugar: Friend or Foe?” by William Harris, Registered Dietician, www.nutritionplace.org

Why should Nico trust this source?

The author uses citations in the text.
The author is knowledgeable on the topic.
The information is reviewed by peers.
The information includes multiple viewpoints.