how many grams per day is considered low carb diet
Eating 100 grams of carb a day is as close to nutritional magic as you can get: It's Low-Enough Carb. At 100 grams of carbs per day, you won't be in ketosis, but your carbs will be low enough that you'll be preferentially stoking your metabolic furnace with stored and dietary fats and not carbs.