The first part of the textbook, the practical part, is designed for students, assistants, professionals in healthy lifestyle and exercises, and nutritional specialists who have to communicate in English or who wish to work in English-speaking countries. The level is lower intermediate to intermediate, but some of the texts can be used by well-motivated, self-study beginners as well. The language is easy, and vocabularies give a very good selection of important words, and they also indicate how the terms are pronounced. The students of various nationalities are supposed to find out the meanings by themselves, and that is why the book can be used also in multilingual classes. Some learners will find it useful to keep a vocabulary notebook or vocabulary cards with the meaning of the new words. Theoretical part of the textbook is designed for medical students, physicians, nurses, nutritionists, and nutritional scientists whose first language is not English. This part is very good help to those who want to learn professional journals and textbooks or take part in conferences conducted in English. Exercises in each unit can be used as a basis for discussion. The level of this part is intermediate to upper intermediate. The book is a valuable resource for both individual and group study. You may choose to work through the book from beginning to end, or you may find it more useful to select chapters according to your interests and needs. The book uses medical terms derived from Greek and Latin.