Is Mildly Dilated Right Atrium A Cause For Concern?

I am a 46 yr old male, non smoker, non drinker, 156lbs, 5 8 . I eat leafy greens and fruits daily, no junk food. Colleague did echo on me, and it was found I have mildly dilated right atrium, with mild TR, IVC collapses normally, and is 2.2 cm. Any reason to be concerned? What can be done to minimize further enlargement?