How many grams of sugar should a 3-year-old child consume in one day?

Watch the labels in the food you buy--avoid anything high fructose syrup and high carb food items in the snack aisle. A piece of fruit, a vegetable, etc. is much better.
I'm not sure, but I'd guess as little as possible!
A child will get enough sugar naturally from fruit and other foods without eating sugar in the form of candy or fizzy drinks.
refined sugar sould be kept to a mininum. More important things for a 3 year old are calcium and vitamins.
Children have a natural sweet tooth, high metabolism and they tend to get bored easily (which can mean they dont eat as much at a sitting as they should.) Suger in moderation is not harmful to a small child, does not cause hyper-activity and it does satify a strong desire. But, you probably give your child more sugar than you realise. Ketchup, soda, juice, non-juice fruit drinks, peanut butter, commerical baked goods (waffles, muffins, etc), cereals, yogurts can all have a LOT of sugar in them. Your child will enjoy the sugar they eat in a day a lot more if they get in in truly sweet foods like cookies, popsicles and other such "junk" foods. IMO cookies (in moderation) are good for the soul. Switch to Cheerios or corn flakes instead of frosted or marshmallow cereals, get natural peanut butter, buy regular yogurt (not the food dyes sweetened kid stuff), serve less ketchup, bake your own muffins (not from a mix) and have your child drink 100% real juice and more water and milk and let him/her eat some sweets. What is childhood without cookies, candy and cupcakes? As long as he/she gets all her vitamins, minerals and macronutrients (lipids (fats/oils), carbohydrates (sugars, starches, fiber) and proteins)and enough excersize he/she will be healthy and fine.

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