I Swell Up Quite Frequently, Torso Especially, And To A

I swell up quite frequently, torso especially, and to a point of being uncomfortable while in hot weather. I try to stay in the shade or indoors as much as possible to stay cool, however this is not always possible. Should I be actively increasing my salt intake to combat this problem? As a rule, I do not sweat much. I do try to stay sufficiently hydrated. I am 57, active, in good physical shape, do not take any medications and on the tail end of menopause. Any advise would be appreciated, thank you!