Even though this might be oversimplifying things a bit, the brain regions affected by HD have decreased GABA and acetylcholine, and increased dopamine levels.
Unfortunately, pieces of science journalism can also oversimplify and generalize their subject material to the point that the basic information conveyed is obscured or at worst, obviously wrong.
While large cities are full of eateries representing different countries — China, India, Italy, Mexico, and more — these labels can oversimplify the reality of food from these countries.