Eat some foods high in potassium and calcium every day.
The chemical reactions inside all our cells are very sensitive to the balance of acid and alkali. This balance is maintained by ions of calcium, potassium, sodium, chloride, phosphate and hydrogencarbonate.
If we eat excess protein or acid foods, calcium and potassium ions get used up in order to neutralise the acid. Dr Hay and modern science advocate the same two approaches. Don't eat too much protein and do eat high potassium foods every day. Dr Hay also advocates restricting the intake of acid foods such as rhubarb and vinegar, but modern food chemistry demonstrates that a touch of vinegar in cooking a protein meal will help preserve many of the vitamins such as thiamin, riboflavin, folate and vitamin C.
Women - require only one starch meal each day unless you are active and need the extra energy.
Men - need extra energy and may require two starch meals a day.
On average women have a more efficient metabolism than men. If you have a very low fat diet, you will need to eat more starch than you can comfortably eat in one sitting. If you have a physically active life, two starch meals a day may give you all the energy that you need.