Building blocks

Every bodily function relies on protein. People’s protein needs are based on age, body size, activity levels, and overall health. Harvard experts advise people to consume between 1.2 and 2.0 grams of protein each day for every kilogram (2.2 pounds) of body weight. Women need more protein at certain times, including pregnancy and breastfeeding. People who are competitive athletes or trying to build muscle should also eat higher amounts of protein. Older adults should consume higher amounts to combat age-related muscle loss.