Costco hand-grabbed cakes contain shortening, which contains trans fatty acids, and will not be absorbed by the human body, but eating them in moderation will not cause obvious harm to the human body.

Trans fatty acid is an unsaturated fatty acid harmful to human body. Excessive intake will lead to the increase of low-density lipoprotein cholesterol and the decrease of high-density lipoprotein cholesterol in the body, which will lead to the harm of vascular system diseases to people.