Dr. Robert Lustig has great youtube videos explaining why sugar is so heavily entrenched in the standard American diet and the health problems it causes. I’ll put a link to one of his updated videos below. I’m also pasting an online definition of sugar which aligns with what Dr. Lustig said on his videos about the composition of table sugar, its 50% glucose and 50% fructose. We need glucose and our body will create it if we don’t get it. Fructose is the issue for our health and he gives an in depth, thorough explanation.

“Sucrose, commonly known as “table sugar” or “cane sugar”, is a carbohydrate formed from the combination of glucose and fructose. Glucose is the simple carbohydrate formed as a result of photosynthesis. Fructose is nearly identical, except for the location of a double-bonded oxygen. They are both six-carbon molecules, but fructose has a slightly different configuration. When the two combine, they become sucrose.”