« Make healthy hydration the new norm »

How do your needs change over time ?

Water requirements change at different life stages. So how much water should people drink at each stage of their lives?

Hydration for pregnant & breast feeding women

Because of the particular importance and responsibility of the pregnancy and lactation phases, it is often a time when mothers modify their nutritional habits and lifestyles to ensure the best and healthiest start in life for their new child.
Most pregnant and lactating women are likely to pay attention to living healthily and eating healthily– it is important that health care practitioners should ensure that hydration is not overlooked.

Indeed, weight increases about 12 kg during pregnancy, and most of this added weight, 6 to 9 L, is water¹, because:

  • The plasma volume (which is mainly water) increases
  • 85% of the placenta is water²
  • The fetus itself is 70-90% of water

To ensure adequate water intakes during pregnancy, the EFSA recommends an increase of 300 mL per day compared to the normal intake for non-pregnant women, taking total adequate water intake (from food and fluids) to 2,300 mL, or approximately 1,850 mL/ day from fluids³.

During lactation, water intake needs to compensate for the loss of water through milk production. Milk is made of 88% water.

The EFSA therefore recommends that lactating women increase their water by about 700 mL/day, meaning an adequate intake of 2,700 mL/day (from food and drink), or approximately 2,200 mL/day from fluids.

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