The primary function of the corpus luteum is secretion of the hormone progesterone, which is required for maintenance of normal pregnancy in mammals. The corpus luteum develops from residual follicular granulosal and thecal cells after ovulation. Luteinizing hormone (LH) from the anterior pituitary is important for normal development and function of the corpus luteum in most mammals, although growth hormone, prolactin, and estradiol also play a role in several species.
1 Low levels of vitamin B 12 can cause pernicious anemia. 2  Vegetarians who eat no animal products and the elderly who absorb less vitamin B 12 are most at risk. 3  Vitamin B12 is found only in animal foods and fortified foods.he best sources of Vitamin B 12 include: eggs, milk, cheese, milk products, meat, fish, shellfish and poultry. Some soy and rice beverages as well as soy based meat substitutes are fortified with vitamin B12. To see if a product contains vitamin B 12 check the Nutrition Facts on the food label.
The 8 Best Foods for Vitamin B12. If you are trying to maintain a proper diet, foods with vitamin B12 should be eaten. Vitamin B12 is a vitamin that is necessary in the body to help red blood cells function properly. Often times, vitamin B12 is attached to the protein that you get when you eat certain types of food.he 8 Best Foods for Vitamin B12. If you are trying to maintain a proper diet, foods with vitamin B12 should be eaten. Vitamin B12 is a vitamin that is necessary in the body to help red blood cells function properly. Often times, vitamin B12 is attached to the protein that you get when you eat certain types of food.