The older that such fish become, the more mercury they may have absorbed. Anything that eats these fish within the food chain also consumes the higher level of mercury that the fish have accumulated. This process explains why predatory fish such as swordfish and sharks or birds like osprey and eagles have higher
The goal, then, when it comes to having a boy is to increase the likelihood that a Y chromosome sperm reaches the egg first. Many medical researchers believe that Y chromosome sperm are faster swimmers, but that X chromosome sperm have more endurance.
How to Raise the Chances of Having a Boy Three Methods: Using the Shettles Method Using the Ericsson Albumin Method Using PGD with In-Vitro Fertilization Community Q&A Gender selection, the process of predetermining the sex of your baby, is a controversial topic in medicine.