Walking is not helping me lose weight. Not visually, at least. Most days I still feel fat as ever (though I do not own a scale, so who knows).
What it has done, however, is make me stronger. Overall, I feel stronger. I'm regaining a lot of the dexterity and reflexes I used to have.
See, I played a lot of soccer as a teenager. I was incredibly active. Soccer, swim or dive teams, out biking through the woods multiple days a week. Then (thanks soccer!) I injured my knee bad enough to require surgery. It was a really long and not very thorough recovery (for reasons related to an asshole father). Then the fibro kicked in a few years later and I just... stopped, for the most part. When a single day of light activity could leave me in bed, in pain... it became 'why bother?'
Then over the last few years, my leg/ankle/foot developed the issue where overuse would fuck up my foot.
But this has been necessity. 2.2 miles a day, 5 days a week. My knee hurts less. My foot is still fucked up, but an epsom salt bath 1-2 days a week has been helping avoid anything worse than swelling and sharp pain.
It hasn't helped my hip, sadly, but I'll take improvement in one of my two arthritic joints.
The big thing has been the return of my reflexes. I'm really happy with that.