The recommended daily carbohydrate intake varies depending on total calorie needs, health goals, and individual factors, but general guidelines are as follows:

• For a typical healthy adult consuming about 2,000 calories per day, carbohydrates should make up 45% to 65% of total daily calories. This translates to roughly 225 to 325 grams of carbohydrates per day

• The minimum recommended amount to meet basic energy needs, particularly for brain function, is about 130 grams of carbohydrates daily. This is considered the Recommended Dietary Allowance (RDA)

• For weight loss or blood sugar control, many experts suggest a lower carbohydrate intake, typically in the range of 100 to 150 grams per day. Some low-carb diets go even lower, but very low-carb diets (under 50 grams per day) are generally not recommended long-term due to difficulty maintaining fiber intake and diet variety

• The exact amount should be individualized based on factors such as age, sex, activity level, health status, and personal goals. Emphasis is also placed on the quality of carbohydrates, favoring whole grains, fruits, vegetables, and fiber-rich sources over refined sugars and starches

In summary, a healthy adult typically needs between 130 grams (minimum) and 225–325 grams (standard range) of carbohydrates daily, with adjustments made for weight management or specific health conditions.