There are layers to this claim, and the simplicity of saying that "eating ice cream for breakfast makes you smarter" can be extremely misleading. The term "smarter" is a vague statement, as it isn't specified whether this is referring to long term sharpness, or the performance of a singular task. It can be inferred by the experiment discussed in the article (in which subjects are tested on a computer after eating ice cream), that the term "smarter" is contextually referring to short-term mental alertness. It is clarified by Katie Barfoot, a nutritional psychologist, that glucose consumption will in fact boost mental capacity as compared to eating nothing. However, there are elements to the experiment missing, such as how eating ice cream in the morning would compare to eating foods with a higher nutritional value. The end of the article admits that sugar (specifically in the form of ice cream) isn't necessarily beneficial to your health, especially long term. The second to last paragraph even advises readers to further research claims they see on the internet rather than believing them immediately. Therefore, this claim is not entirely true, and although having ice cream in the morning here and there could potentially be beneficial in comparison to other alternatives, it isn't necessarily "good for you."