★★★★☆
I started to get dupuytrens in both hand several years ago when I had some severe health problems. The alternative health practioner suggested I had a deficiency of zinc. When I started taking zinc supplements (25mg per day) the nodules and the contractures started to significantly subside. (I can open my hands fully.... But sometimes still have some weakness. ) I occassonally get flareups where the hands get more painful and I start to get a nodule in each foot. (Often when I've forgotten my zinc. ) But it has always subsided again.