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Four white, circular pills balance on their side in front of a pink background.
Metformin Prescriptions Linked to Sons’ Birth Defects
A new cohort study finds that boys whose fathers took the type 2 diabetes drug metformin three months before their conception were more likely to have a birth defect.
Metformin Prescriptions Linked to Sons’ Birth Defects
Metformin Prescriptions Linked to Sons’ Birth Defects

A new cohort study finds that boys whose fathers took the type 2 diabetes drug metformin three months before their conception were more likely to have a birth defect.

A new cohort study finds that boys whose fathers took the type 2 diabetes drug metformin three months before their conception were more likely to have a birth defect.

testosterone
Black and white image of Jean Wilson in an office, wearing a lab coat.
Endocrinologist Jean Wilson Dies at 88
Lisa Winter | Jun 24, 2021 | 2 min read
The University of Texas Southwestern professor’s research focused on the androgen hormones that cause male sexual differentiation and may also lead to prostate disease.
Image of the Day: Stink Flirting
Amy Schleunes | Apr 17, 2020 | 1 min read
Male lemurs secrete aldehydes from their wrist glands that may make them more attractive to females during the breeding season.
Infographic: How to Catch Cheating Athletes
Anna Azvolinsky | Sep 1, 2019 | 3 min read
Anti-doping agencies are tracking levels of various molecules in athletes’ blood and urine over time to increase their ability to detect drug misuse.
Does Sharing the Womb with a Brother Affect Girls?
Ashley Yeager | Mar 19, 2019 | 2 min read
A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.
Hormonal Male Contraceptive to Enter Clinical Trial
Jef Akst | Dec 21, 2017 | 1 min read
The gel, which men rub on their upper bodies daily, delivers synthetic progestin to block the testes from producing normal levels of sperm.
Book Excerpt from Testosterone Rex
Cordelia Fine | Dec 31, 2016 | 4 min read
In Chapter 6, “The Hormonal Essence of the T-Rex?” author Cordelia Fine considers the biological dogma that testes, and the powerful hormones they exude, are the root of all sexual inequality.
Capsule Reviews
Bob Grant | Jul 1, 2015 | 3 min read
Stoned, Anxious, The Deeper Genome, and Testosterone
Autism-Hormone Link Found
Bob Grant | Jun 4, 2014 | 2 min read
A study documents boys with autism who were exposed to elevated levels of testosterone, cortisol, and other hormones in utero.
A Hair-Raising Solution?
Dan Cossins | Sep 1, 2013 | 4 min read
In the long-fought battle against baldness, researchers are finally identifying molecular pathways that can be manipulated to generate new hair follicles.
Book Excerpt from The Hour Between Dog and Wolf
John Coates | Sep 5, 2012 | 5 min read
In his latest book, author John Coates describes the tension and exultation of the trading floor from a biological perspective.
Sex, Deconstructed
Megan Scudellari | Feb 2, 2012 | 3 min read
Hormones in the brain control sex-specific behaviors by activating individual genetic programs.
The Ups and Downs of Fatherhood
Cristina Luiggi | Sep 13, 2011 | 1 min read
Caring for a child can suppress testosterone levels in men.
Digit Ratio and Sex Hormones
Tia Ghose | Sep 6, 2011 | 1 min read
Men and women may have different finger-length ratios as a result of different sex hormone exposure during early embryonic development.
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