Refined sugar is processed raw sugar.
It’s easy for the body to digest and breakdown and causes blood sugar spikes quickly.
Remember this when reading your food labels:
1 tsp sugar = 4.2 g sugar = 16 calories/67 Kj
The WHO recommends 25g/6 tsp sugar per day
Added refined sugar can go by these names on food labels:
fructose, corn syrup, palm sugar, rice syrup, malt syrup…
For a full list, see this choice sugar labelling article.
Refined sugars we use in cooking are: corn syrup, table sugar, white sugar, granulated sugar, confectioners sugar/powdered sugar.