The specialized book "Bio-accumulation of essential and heavy metals in plant food" offers a comprehensive investigation into soil contamination by toxic metals and its impact on food production. It highlights the serious consequences arising from soil pollution, including damage to ecosystems, impaired agricultural productivity, and risks to human and animal health. The author, Biljana Balabanova, analyzes the availability of essential and potentially toxic metals in contaminated soils and their transfer to various plant species. The plants studied include both wild species such as sorrel and spinach, as well as cultivated vegetables like garlic and onions. The results are based on precise measurements using atomic emission spectroscopy with inductively coupled plasma to determine the content of 21 elements. This book is aimed at professionals and students in the fields of mathematics and natural sciences who are engaged with environmental issues and food safety.