Question: how many grams does the average person eat per day?
Answer: If you're at a healthy weight, don't lift weights and don't exercise much, then aiming for 0.36–0.6 grams per pound (0.8–1.3 gram per kg) is a reasonable estimate. This amounts to: 56–91 grams per day for the average male. 46–75 grams per day for the average female.