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Packet of oral contraceptive pills

Packet of oral contraceptive pills

M860/0030

Rights Managed

27.3 MB (1.3 MB compressed)

3756 x 2536 pixels

31.8 x 21.6 cm ⏐ 12.5 x 8.5 in (300dpi)

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Credit

ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY. ADAM HART-DAVIS / SCIENCE PHOTO LIBRARY.

Caption

Oral contraceptive pills; each pill is marked with a date to prevent an omission of the daily dose. Contraceptive pills contain one or more of synthetic female sex hormones. Many types are a combination of an oestrogen, which blocks the process of ovulation (release of mature ovum - egg), and a progestogen, which acts on the pituitary gland to affect the normal menstrual cycle. Progestogens also increase viscosity of mucous in the cervix (neck of womb), providing a barrier to sperm should ovulation occur. Side- effects are numerous, including weight increase, nausea, depression, and a risk of thrombosis.

Release details

Model release not required. Property release not required.

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