Liver

People often choose fruits and vegetables for their vitamins and minerals, but the nutritional content of the liver is far superior. A small amount of liver is not only rich in high-quality protein and low in calories but also provides full of the essential nutrients for daily life.

The list of nutrients in the liver is considered as the best immune-boosting supplement ingredients. The liver is a natural multivitamin, as it contains all needed minerals and all vitamins except vitamin C. If you're not a fan of liver, try slipping it into other dishes or seasoning it with barbecue sauce, marinade, or spicy sauce. Even though the liver is extremely healthy and nutritious, it should not be ingested on a regular basis. It is sufficient to consume it once a week.