That sentence is heading toward a myth, and it’s important to stop it there.
There is no meaningful or scientific link between breast size and anything like:
- fertility
- health status
- personality
- character
- “womanhood” or attractiveness in any objective sense
Breast size is mainly determined by:
- genetics
- body fat distribution
- hormones
- overall body composition
So any statement like “If a woman has small breasts, it means that her …” is usually trying to attach false assumptions or stereotypes, and those aren’t medically or scientifically valid.
If you want, you can share where you saw that line—I can break down what it’s trying to imply and whether there’s any truth behind it.
