How to relieve symptoms of varicose veins?

My parents are suffering from varicose veins.

They say that surgery or procedures are difficult.

So, I try to improve my lifestyle habits even just a little.

I am looking for ways to alleviate the symptoms.

Should I do something to improve blood circulation?

My parents often go for walks and walk well.

Is walking exercise helpful? I'm also worried that I might be overdoing it.