Two new studies examine the role of the "obesity hormone" leptin and hormones used for birth control in the development of multiple sclerosis (MS). The leptin study found that people who are obese at age 20 are twice as likely to develop MS as people who are not obese. Similarly, the birth control study found that women who had used birth control pills were 35% more likely to develop MS than those who did not take them. Source: The American Academy of Neurology.
In order to more efficiently handle multiple federal lawsuits brought against Bayer Pharmaceuticals, the Judicial Panel on Multidistrict Litigation (MDL) has granted a motion to create an MDL proceeding for actions arising from injuries allegedly caused by Mirena. The case will be heard by Judge Cathy Seibel in the Southern District of New York.
Mirena is a T-shaped plastic IUD that releases continuous doses of a hormone, levongorgesterel, which is intended to prevent pregnancy for up to five years after implantation. Although the majority of women who use Mirena are satisfied by the product, dangerous side effects and injuries have been reported including pelvic pain, pelvic inflammatory disease, perforation of the uterus or cervix, ectopic pregnancy, and intrauterine pregnancy.
 In re Mirena IUD Prods. Liab. Litig. (J.P.M.L. Apr. 8, 2013) (MDL No. 2434)
 Rothman, Alan E. "And Now A Word From The Panel," Law360 (May 29, 2013).