Men conceived through IVF have about half the total sperm concentration and a twofold reduction in sperm count compared to traditionally conceived men, study shows

Last year a study suggested the majority of cancers are down to bad luck - random DNA mutations in stem cells that are not caused by lifestyle factors

Nicotine has the potential to prevent brain aging, study suggests

Italian doctor to perform the first human head transplant in history within the next year

Cell reprogramming discovery may lead to treatments for eye diseases

Antidepressant success affected by environmental conditions

High status job means you are less likely to respond to treatment for depression

Surprising deep similarities found across thousands of languages - "A recent study, the largest of its type, looks set to unhinge a commonly held linguistic theory

Appealing to teens' impulse to rebel can curb unhealthy eating

Job dissatisfaction has negative health effects by age 40