For decades scientists believed that animals need to make a sacrifice in order to reproduce – they can either choose fertility and to have offspring, or they could have a long and happy life. Not an easy choice, is it?

However, a new study that was done in Australia suggests otherwise. The article published in the Proceedings of the National Academy of Sciences of the USA claims that it could be possible that mammals live longer and increase their fertility by simply manipulating their nutrition.

Researchers have been observing over 800 mice that were on diets with varying amounts of protein, carbohydrates, fat and caloric value. Once mice were 15 months old, the scientists measured their fertility. And this is where it gets really interesting.

Both male and female mice lived longer if they ate diet rich in carbohydrate and low in protein, while their reproductive potential was at its best if they ate a lot of protein and little carbohydrates.

It may seem like mammals have to choose between being fertile or living long, but this is not the case. By simply altering macronutrients ratio at different life stages, they can achieve both.

Since the theory has been proven to be true for mice, scientists are hopeful that the same may be true for humans. This would mean that we could increase our protein to carbohydrate ratio to boost our fertility, and to decrease our protein intake later in life. If this is true, in future chances of conceiving could be significantly increased with an optimal nutrition before opting for a medical intervention.