By Ashik Siddique | May 14, 2013 08:46 PM EDT
Testosterone levels increase when men defeat rivals in competitions, but not after competing against male friends. Lower testosterone reactivity helps maintain bromances, a study suggests.
By Ashik Siddique | May 09, 2013 07:38 PM EDT
Cardiac muscles that thicken with aging can cause heart failure; a new study on mice finds that a hormone called GDF11 can rejuvenate the tissue, making old hearts young again.
By Lizette Borreli | May 02, 2013 05:52 PM EDT
Women are more likely to suffer from insomnia than men due to the size of the hypothalamus.
By Ansa Varughese | Apr 25, 2013 02:55 PM EDT
Harvard researchers discovered betatrophin, a hormone that increases production of insulin-secreting pancreatic cells, which could naturally improve glycemic control.
By Makini Brice | Jan 24, 2013 02:08 PM EST
Male soldiers are generally considered to be extremely masculine.
By Makini Brice | Oct 19, 2012 02:28 PM EDT
Researchers have found that a simple blood test may predict a postmenopausal woman's chance of developing breast cancer over the course of her lifetime - and the test stays accurate for 20 years.
By Christine Hsu | Sep 28, 2012 03:25 PM EDT
Exposure to a common weed-killer may increase the risk of a rare nasal birth defect, according to a new study.
By Nikki Tucker | Sep 28, 2012 12:08 PM EDT
Many people believe healthy hair is a result of outside factors. Lather, condition and rinse may be the standard advice from your hairstylist. However, to get the healthiest hair possible it starts from within.
By Christine Hsu | Sep 26, 2012 02:17 PM EDT
Two male researchers have attempted to answer the age-old question: why are men obsessed with women's breasts?
By Christine Hsu | Sep 04, 2012 03:35 PM EDT
Men and women see the world differently, according to new research that finds that while men are more sensitive to fine detail and moving objects, women are better at discriminating between colors.
By Makini Brice | Aug 28, 2012 03:14 PM EDT
Experts are drawing attention to an issue that seems to be growing: sperm quality is declining in quality and quantity.