The average adult should be consuming 0.8 g of protein per kg of body weight. (heynutritionlady.com)
The UK Food Standards Agency recommends that an adult consumes 0.8 g of protein per kg of body weight per day, meaning someone weighing 65Kg would eat 52g per day, although this amount may increase the busier our lifestyle becomes. (maxinutrition.com)
Using nitrogen balance data it was found that the protein requirements for strength athletes is 1.3 grams protein per kg of weight per day (0.6 g / lb) and for endurance athletes 1.1 grams protein per kg of body weight per day (0.5 g / lb). (thomasdelauer.com)