risk of obesity. Displacement may occur at lower levels of consumption. Recommended dietary intake The WHO recommends that both adults and children reduce the intake of free sugars to less than 10% of total energy intake, and suggests a reduction to below 5%. "Free sugars" include monosaccharides and disaccharides added to foods, and sugars found in fruit juice and concentrates, as well as in honey and syrups. According to the WHO, "[t]hese recommendations were based on the totality of available evidence reviewed regarding the relationship between free sugars intake and body weight (low and moderate quality evidence) and dental caries (very low and moderate quality evidence)." On 20 May 2016, the U.S. Food and Drug Administration announced changes to the Nutrition Facts panel displayed on all foods, to be effective by July 2018. New to the panel is a requirement to list "added sugars" by weight and as a percent of Daily Value (DV). For vitamins and minerals, the intent of DVs is to indicate how much should be consumed. For added sugars, the guidance is that 100% DV should not be exceeded. 100% DV is defined as 50 grams. For a person consuming 2000 calories a day, 50 grams is equal to 200 calories and thus 10% of total calories—the same guidance as the WHO. To put this in context, most 355 mL (12 US fl oz) cans of soda contain 39 grams of sugar. In the United States, a government survey on food consumption in 2013–2014 reported that, for men and women aged 20 and older, the average total sugar intakes—naturally occurring in foods and added—were, respectively, 125 and 99 g/day. Measurements Various culinary sugars have different densities due to differences in particle size and inclusion of moisture. Domino Sugar gives the following weight to volume conversions (in United States customary units): Firmly packed brown sugar 1 lb = 2.5 cups (or 1.3 L per kg, 0.77 kg/L) Granulated sugar 1 lb = 2.25 cups (or 1.17 L per kg, 0.85 kg/L) Unsifted confectioner's sugar 1 lb = 3.75 cups (or 2.0 L per kg, 0.5 kg/L) The "Engineering Resources – Bulk Density Chart" published in Powder and Bulk gives different values for the bulk densities: Beet sugar 0.80 g/mL Dextrose sugar 0.62 g/mL ( = 620 kg/m^3) Granulated sugar 0.70 g/mL Powdered sugar 0.56 g/mL Society and culture Manufacturers of sugary products, such as soft drinks and