Analytical Review on Nutritional Deficiencies in Vegan Diets: Risks, Prevention, and Optimal Strategies

Factors like health concerns, environmental issues, and ethics have driven the rapid rise in veganism's popularity over the last decade. While studies confirm that veganism reduces the risk of chronic diseases, such as diabetes, obesity, and heart disease, significant challenges persist in meeting nutritional needs. This review identifies critical dietary deficiencies common in vegan diets, including inadequacies in vitamin B12, iron, calcium, vitamin D, Iodine, zinc, and omega-3 fatty acids, and explores strategies to mitigate these risks. These deficiencies result in chronic diseases like anemia, osteoporosis, and neurological disorders. Hence, this review observes the clinical literature to establish causes and will discuss a supplement strategy to enhance these deficiencies. Economic accessibility to fortified foods and supplements poses additional challenges, particularly for low-income individuals or regions with limited access to vegan-friendly products. Addressing these barriers is essential to make vegan diets viable for all. Many of these nutrients, predominantly found in animal products, are difficult to obtain in sufficient amounts through plant-based diets alone, leading to potential health risks like anemia, osteoporosis, and neurological disorders. This study evaluates clinical literature to pinpoint the causes of these deficiencies and examines effective supplementation strategies to address them. Beyond highlighting the challenges, it discusses the environmental benefits of veganism, showing how plant-based diets significantly reduce water usage, land pressure, and greenhouse gas emissions. The study concludes that while a poorly planned vegan diet can lead to nutritional inadequacies, with proper dietary planning and personalized supplementation, vegan diets can support long-term health and promote environmental sustainability. Recommendations from experts are also included for tailoring vegan diets to meet individual health needs effectively.