Define requirements of Sodium during pregnancy period?

As you know, sodium plays a role in fluid balance. Sodium metabolism is altered during pregnancy under the stimulus of a modified hormonal milieu. Restriction of sodium is not recommended to combat oedema. In animals it has been shown that rigorous sodium restriction stresses the rennin - angiotensin - aldosterone system to the point of breakdown. Such animals show reduced weight gain, altered fluid consumption patterns and they tend to develop water intoxication along with renal and adrenal tissue degeneration. Neonatal hyponatremia has been observed in offspring of women who unduly restricted their sodium intake before delivery. Although moderation in use of salt and sodium-rich foods may be appropriate, aggressive restriction is not warranted. Not less than 2-3 g of sodium should be consumed daily.