But some of the smaller studies conducted over the past two decades show that no sperm is "progressing" and that some doctors have begun to say that it will not lead to pregnancy. Despite their small size, Black Widow Spiders employ a very potent venom. It has been said that their venom is a bit more powerful compared to coral snakes and cobra snakes. The venom of a female Black Widow Spider is a bit more harmful than that of the males, but the probability of death is pretty small although negative effects can be quite unpleasant. The venom from all of these spiders is a lot more powerful than the venom of many other spiders. Their venom is known as neurotoxic where there are a couple of active components inside such as Latrotoxins and Adenosine. The most commonly affected joints are those in: hands, spine, knee, buttocks The person who has this complaint has a condition in that the glucose content within the blood is too high. This situation occurs as the is either not able to produce enough insulin, produce no insulin, or has cells that will not react to the insulin the pancreas produces. As a result, a lot of sugar builds up within the blood. The excess blood glucose levels passes out of the body through urine. So, although the blood has plenty of glucose, cells didn't obtain the glucose to the element energy and growth.