I know of no herbal remedy for toenail infections. I am not overweight and exercise regularly. I have spider veins. It is not common in my age but is something mostly as people grow older. I have heard that vitamin K might help minimize spider veins.
Spider veins are a type of varicose vein that occurs on the legs.
Actually there quite a lot of women who get them in their 20s. Treatment includes laser surgery or sclerotherapy, which saline is injected into the vein. Black toenails often occur due to trauma or vigorous rubbing of the foot. It represents blood that has developed under toenail. It is harmless, but not cosmetically appealing.