Is there a family history of varicose veins?

My second older sister works a lot standing up.

You can sit, but most people seem to be standing.

Maybe that's why her legs often swell..

Earlier, I hurriedly obtained a Seven Liner carrot and brought it to my sister.

I'm hoping it will loosen up even a little.

But...

My mother-in-law has had severe varicose veins in both calves since she was young, so she never wore skirts. Eventually, when she turned eighty, she had surgery.

If your sister's leg swelling occurs frequently...

Is there a high chance of developing varicose veins?

Will this also be highly inherited?