Final answer:
A minimum of about 130 grams of carbohydrate per day is recommended to supply adequate glucose to the brain, primarily from complex sources for a steady release of energy.
Step-by-step explanation:
How many grams of carbohydrate, at minimum, per day are required to supply adequate glucose to the brain? To meet the brain's glucose needs, a minimum intake of about 130 grams of carbohydrates per day is recommended for individuals up to the age of 13 years. This figure is generally applicable to adults as well, considering that the adult brain uses about 20% of the body's energy and primarily relies on glucose for fuel. Moreover, most carbohydrates should come from complex sources as they are digested more slowly, providing a more consistent release of glucose into the bloodstream. While carbohydrates are a key source of energy, it's important to consume them as part of a balanced diet, with sufficient intake of proteins, vitamins, and fats.