Garlic has high concentrations of manganese, copper, selenium, and vitamins B6 and C. If someone is craving garlic, his diet may be lacking enough of these vitamins and minerals, suggests LivingWhole.org.
The human body needs a variety of nutrients to function properly. Garlic contains approximately 15% of the daily recommended intake of manganese. Manganese helps with bone production, skin health and blood sugar control. Selenium is essential in reproductive and thyroid health. Vitamin B6 is essential in stimulating hormone production in the brain, while vitamin C is required for normal growth, development and immune support. A person who is experiencing strong cravings for garlic should speak with a medical professional and consider whether he is experiencing a nutritional deficiency.