[kaibee]

Low carb is generally considered to be under 100g carbs/day. Ketosis requires under 20g carbs/day.

[whb07]

under 50g and it depends on the physical activity of the individual. Meaning if you're a highly tuned physical machine then you can eat far more than 50g.

[eatmyshorts]

Closer to 50g/day, not 20....but the lower you go the more ketones your body produces.

[richthegeek]

This is a net/gross carb confusion. Less than 50g including fiber, or 20g excluding fiber.

[wnmurphy]

Ketosis is a normal supplemental metabolic state that the body enters in between meals to various degrees. There's no hard black/white macro requirement.