Potassium deficiencies are associated with breathlessness, fatigue, insomnia and low blood sugar. Potassium is essential for healthy heart muscles. Nuts and unrefined grains are good sources of potassium. Calcium is a natural sedative. Deficiencies can cause fatigue, nervousness and tension. Dairy products, eggs, almonds, and soyabeans are rich sources of calcium. Magnesium is known as [...]