I like to eat healthy. Nutritious diet rich in protein, fiber and vitamins helps to keep my body and mind in good health. I eat fish, vegetables, fruits, and multi-grain breads. Fish contains good fats; vegetables contain rich sources of vitamins such as A, C, E, K, and essential anti-oxidants to protect cells from inflammation. Multi-grain breads contain B vitamins that help to balance the nervous system functions, keep the heart and arteries in good shape. I stay away from unhealthy foods: soda beverages, trans fats found in cakes, candy, snacks such as pretzels, cookies and potato chips. These foods, known as junk food, cause obesity, diabetes, heart diseases and colon cancer. In addition, these foods may also cause brain disorders and other serious ailments over time if consumed regularly.

the main topic sentence

This paragraph is well written because it explains the main topic sentence with supporting sentences. The supporting sentences answer the questions of HOW or WHY". "Why is charity for the poor works to the interest of society?", "How does charity for the poor work to the interest of society?"