Vitamin A is needed for the integrity and defence of our skin and the mucous membranes that line our mouth, nose, gut and lungs. Without this we are vulnerable to attack by viruses and other microorganisms.
Lascaux, a cave in France, is World famous for its ancient art. The artists painted the chambers with aurochs a very old version of the cow.
Dry eyes are a common symptom in our screen obsessed times. They are commoner in older women. Some medications such as antihistamines and common psychiatric medications can provoke it.