How Much Sugar Is in Light Milk?
                                
                                
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                                    5 min read                                
                            
                                According to the U.S. Dairy industry, an 8-ounce glass of plain cow's milk contains about 12 grams of natural sugar, known as lactose. This holds true regardless of the fat content, meaning the amount of sugar in light milk is virtually identical to that in whole milk. The real difference lies in the fat and calorie count, not the carbohydrates.