For improving health fatty oils that contains Trans and saturated fatty acids should be replaced with oils rich in monosaturated and polyunsaturated fatty acids that have the basic task to lower cholesterol. Olive oil obtains by squeezing olives and has a wide use in cooking, cosmetology and medicine. It is appreciated as a dietary product due to its high content of unsaturated fatty acids and polyphones. This oil uses as a remedy for burns, intestinal and gastric inflammation and destroying various types of bacteria. It is good for the heart and blood vessels, and has a very important role in relieving pain from rheumatoid arthritis. Its antioxidants and healthy fatty acids lowers bad (LDL) cholesterol. Olive oil is a common ingredient in cosmetic products, particularly those used for dry, damaged skin, skin that is prone to eczema, as well as preparations for sunbathing. Its use advises in home making masks for the face, hair and body. Olive oil is the main ingredient of Mediterranean cuisine, especially cold pressed as a salad dressing. In addition to proven medicines and nutrients, it admits as a very powerful aphrodisiac. Depending on the method of processing there are several types of olive oil. Oil obtained by the first processing is extra virgin olive oil which is considered the best. By second processing obtains virginal oil, and every following processing more purifies oil making lighter versions. Formula of strong immunity considers taking omega 3 fatty acids that belongs to the healthy fats. These acids are involved in building cell membranes and hormones. The best source of omega-3 fatty acids is flaxseed oil. Considering its purchase it is important to pay attention to quality, because the light and oxygen can easily destroy it. It means that flaxseed oil should be kept in the dark, well-sealed glass bottles. It must be kept in the fridge and used for cold dishes, never for cooking, because the high temperature destroys the omega acids. Flaxseed oil promotes weight loss because the omega 3 fatty acids help in reducing body fat. These acids reduce cholesterol, triglycerides and heart arrhythmia, preventing diseases of heart and blood vessels. Laboratory researches have shown that omega 3 fatty acids can selectively destroy cancer cells in tissue, without destroying healthy cells. It is believed that in the future high doses of omega 3 might cause slowing or stopping tumor growth, while healthy people are advised to enrich diet with omega acids as prevention of cancer. In two thirds of arthritis cases, patients who took omega acids as a daily dietary supplement noticed a significant progress, and no longer had to take medication based on steroids. The other 20 percent were able to reduce anti-arthritis drugs. Psoriasis, acne, eczema, dry skin, allergies and other skin conditions are usually associated with a lack of omega acids. Also omega 3 fatty acids regulate immunity and they are responsible for the physiological body response to stress. Nut Oils - almond, hazelnut, macadamia, pecan and pistachio oils have high level of monounsaturated fats. Also, almond and hazelnut oils are a significant source of vitamin E. Walnut oil is abundant in polyunsaturated fats and omega 3 fatty acids.