Tip 4. Anti-Aging Cures: The Example of Lecithin To stay young, take lecithin. Besides reducing the cholesterol level in the blood, there is mounting scientific evidence to suggest several other benefits from lecithin. It has been suggested that its intake in sufficient amounts can help rebuild those cells and organs which need it. Lecithin helps to maintain their health once they are repaired. It may mean that a deficiency of lecithin in the diet may be one of the causes of ageing and that its use may be beneficial in retarding the ageing process. Edward R. Hewith in his book, The Years Between 75 and 90 says," with older people the fats remain high in the blood for from five to seven hours and in some cases as long as 20 hours, thus giving the fats more time to become located in the tissues. If lecithin is given to older people before a fatty meal, it has been found that the fats in the blood return to normal in a short time, in the same way they do in younger people." Tip 5. Getting to Know the Basic Concepts of Human Nutrition: The Example of Potassium 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 nature's tranquilliser and is associated with the prevention of heart attack. Deficiencies may lead to excitability, irritability, apprehension and emotional disorders. Magnesium is also necessary for absorption of calcium and potassium and is found in many fruits, vegetables, seeds, dates and prunes.