6. Crabs
Vitamin B12 can only be found in animal foods. If you want to harness this vitamin, choose crabs. They contain 3.3 mcg per 100 grams. Each day, you only need 2.4 to 12 mcg. It means that a small serving of crabs is more than enough to meet your needs. They help in red blood cell production and they also help regulate blood flow.
7. Egg Yolk
Most people would say that egg whites are healthy but not the yolk. The truth is that you will also get a lot of benefits from the yolks. They are a rich source of biotin, which you need for better metabolism. This vitamin B is essential for people suffering from nutrient deficiency. As long as you eat in moderation, it would be fine. Egg yolks contain only 1.1 mcg per 100 grams.
