Cold feet are a key warning sign of varicose veins, according to new research. Hypersensitivity to the cold - especially ice cold feet - as well as a feeling of heaviness in the legs are linked to the ...

Cold feet and leg heaviness may be early symptoms of ‘leaky’ veins that can lead to visible varicose veins, a new study shows ...

The smallest control system of vision in mammals has been mapped -- a discovery that opens entirely new insights into how our vision works and how it can be affected by disease.