Scanty nourishment and the permanent lack of microelements and vitamins made people of the Bubal tribe ask their only wealth - cows - for help. The tribers learned that eating the menstrual matter of cows helps them fight such diseases as rachitis, scurvy and leukemia.
The mysterious tribe and their cows roam on the border between Kenya and Somalia. This is the only nation in the world, which practices a very unusual tradition: their children eat cows' menstrual matter until they get married. The Bubals believe that the licking of cow's vagina makes would-be warriors strong and courageous. Italian scientists have recently discovered that the menstrual matter of cows is a source of such vitamins as B6, B12, E and D. In addition, it makes up the deficiency of iron, magnesium, phosphorus, calcium and potassium. That is why, scientists think, cows protect the tribe from the most horrible disease of the region - anemia (the lack of haemoglobin). The most interesting thing happens afterwards, though. Hormone changes become extremely conspicuous with all males of the African tribe, after they reach puberty: their testicles grow up to 70-80 centimeters in diameter. The “miracle of nature” happens on account of the untraditional nourishment that tribal individuals practice in their adolescence. The hormone-rich menstrual secretion of the cattle causes irreversible hormone changes with humans. It is noteworthy, that such giant testicles do not exert any negative influence on the reproductive function, although they do cause many other obvious problems. Tourists from all over the world are ready to pay huge money to take a look at giant testicles. Tourists' money help the tribal nation improve the quality of their meals. It is not ruled out that the next generation of Bubals will have nothing to boast with. Link here.
Oh yeah, I'm not linking the picture here as this is something NSFW. But if you're interested, you can actually google “Bubal Tribe”.