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hormones

The Real Manakin Challenge

Male manakins leap, flip and snap their wings to attract females. With a bit of testosterone the females perform some of the same difficult acrobatics.
Singing While Pregnant

Singing While Pregnant

Beyoncé performs at the 59th annual Grammy Awards in Los Angeles on Feb. 12.
Testosterone Therapy Is Popular, but Studies Are Mixed

Testosterone Therapy Is Popular, but Studies Are Mixed

Ad campaigns for “low T” led to a rise in prescriptions for testosterone.
Matter: Why Are Some Mice (and People) Monogamous? A Study Points to Genes

Matter: Why Are Some Mice (and People) Monogamous? A Study Points to Genes

An oldfield mouse. It’s not just cute: Peromyscus polionotus is monogamous, an unusual trait among mammals.
The 9 New Sleep Rules

The 9 New Sleep Rules

The following story is excerpted from TIME’s special edition, The Science of Sleep, which is available at Amazon. Anyone who has nodded off on the subway, faked alertness in a meeting at work or
The 9 New Sleep Rules

The 9 New Sleep Rules

The following story is excerpted from TIME’s special edition, The Science of Sleep, which is available at Amazon. Anyone who has nodded off on the subway, faked alertness in a meeting at work or
How Household Chemicals Can Hurt Young Girls’ Health

How Household Chemicals Can Hurt Young Girls’ Health

A new study shows exposure to hormone-disrupting phthalates at an early age can harm thyroid function in young girls
How Household Chemicals Can Hurt Young Girls’ Health

How Household Chemicals Can Hurt Young Girls’ Health

A new study shows exposure to hormone-disrupting phthalates at an early age can harm thyroid function in young girls
Researchers Track an Unlikely Culprit in Weight Gain

Researchers Track an Unlikely Culprit in Weight Gain

A pelvic X-ray of a patient with osteoporosis. Recent mouse studies have indicated that a reproductive hormone may be involved in menopausal weight redistribution as well as in bone loss.
Researchers Track an Unlikely Culprit in Weight Gain

Researchers Track an Unlikely Culprit in Weight Gain

A pelvic X-ray of a patient with osteoporosis. Recent mouse studies have indicated that a reproductive hormone may be involved in menopausal weight redistribution as well as in bone loss.