---
title: Do women with PMS have different fluid shifts in their bodies during their cycle?
description: Yes, women with PMS show evidence of fluid moving differently through their bodies during the second half of their cycle, though their total body weight doesn
url: https://niyora.com/research/papers/evidence-for-altered-transcapillary-fluid-balance-in-women-with-the-premenstrual-1993/
---

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- Do women with PMS have different fluid shifts in their bodies during their cycle?

Study, 1993

# Do women with PMS have different fluid shifts in their bodies during their cycle?

Yes, women with PMS show evidence of fluid moving differently through their bodies during the second half of their cycle, though their total body weight doesn't change.

 Early or limited evidence

10 women with well-defined PMS

## What they did

10 women with PMS had their body fluid distribution measured on their chest and leg during different parts of their menstrual cycle. Researchers used specialized methods to measure fluid pressure and how fast fluid moves out of blood vessels.

## What they found

During the second half of the cycle, the fluid pressure in the leg decreased by 3.6 mm Hg, and the rate at which fluid moved out of blood vessels increased by 30 percent. The pressure on the chest stayed the same. Overall body weight did not change.

## What it means for you

This suggests fluid moves around (redistributes) in women with PMS rather than just building up overall, which might explain feelings of bloating. But the study was very small with only 10 women and measured only one specific time point, so it's unclear how often this happens.

10

Women with PMS

3.6

Leg pressure decrease (mm Hg)

30

Percent increase in fluid filtering rate

## About the study

Original title Evidence for altered transcapillary fluid balance in women with the premenstrual syndrome Authors Tollan A, Oian P, Fadnes HO et al. Journal Acta obstetricia et gynecologica Scandinavica Year 1993 Study design Study What was tested None - observational Read the paper [doi.org/10.3109/00016349309068030](https://doi.org/10.3109/00016349309068030)

## Topics

[Premenstrual syndrome (PMS)](https://niyora.com/research/topics/condition-pms/)[Bloating, breast tenderness and physical symptoms](https://niyora.com/research/topics/symptom-physical-symptoms/)

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