I think you might have got your pounds and grams mixed
http://authoritynutrition.com/how-much-protein-per-day/
I think you will find 11st 6lb is about 72 kg, at 0.8 gm per kg = about 58 gm protein a day.
Unless you are going in for body building.


- Women usually have less than 0.8gm per kilo.
To quote from the link you shared:
"Protein is incredibly important.
If we don’t get enough from the diet, our health and body composition suffers.
However, there are vastly different opinions on how much protein we actually need.
Most official nutrition organizations recommend a fairly modest protein intake.
The DRI (Dietary Reference Intake) is 0.8 grams of protein per kilogram of body weight, or 0.36 grams per pound (
1).
This amounts to (
2,
3):
- 56 grams per day for the average sedentary man.
- 46 grams per day for the average sedentary woman.
Although this meagre amount may be enough to prevent downright deficiency, studies show that it is
far from sufficient to ensure
optimal health and body composition."
and
"According to these studies, a protein intake around 30% of calories may be optimal for weight loss. This amounts to 150 grams per day for someone on a 2000 calorie diet. You can calculate it by multiplying your calorie intake by 0.075.
Bottom Line: A protein intake at around 30% of calories seems to be optimal for weight loss. It boosts the metabolic rate and causes a spontaneous reduction in calorie intake."
So no - I think you may be confusing the minimum necessary to prevent tissue damage (minimum RDA) with the maximum healthy amount.
Then again, our sources may be disagreeing with each other.
Looking at Chapter 7 - Protein - of "The Art and Science of Low Carbohydrate Performance" (Volek and Phinney) I see "Aim for a protein intake of between 0.6 to 1.0 grams per pound of lean body weight".
They claim you should aim above the minimum RDA if you are exercising a lot or if you are losing weight.
The book is about LCHF and a ketogenic diet.
So you can get by on a very low amount of protein in your diet, but there is some disagreement on how much is optimal and how much is too much.
Cheers
LGC