New Study Proves That Being Pregnant Can Be Hard Work
Creating and carrying a baby is an incredible feat that demands significant energy from the entire body. A recently published study has revealed how much energy goes into producing a child, and it far exceeds past estimates. Scientists from Australia examined thousands of studies on the reproductive health of various species, including humans. The new research has shown that pregnancy, especially in placental animals like humans, requires about ten times more energy than previously believed.
Pregnancy Is Very Taxing
Overall, an average nine-month pregnancy demands nearly 50,000 dietary calories! Results showed that smaller animals need fewer calories for reproduction compared to larger ones. For mammals with placentas, indirect gestation costs represented around 96% of total energy expenditure, and humans require higher energy investments due to prolonged pregnancy duration compared to other mammals. Customized nutritional needs also vary per individual and trimester. For instance, fewer calories are needed during the first trimester compared to the third. Producing milk further adds to the energy expenditure of those who have given birth. The effort required for lactation surpasses even the energetic content of the milk produced.