young teen girls 


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Pregnancy Prevention

GENESISTER is a pregnancy prevention program for the siblings of pregnant and parenting teens.

When compared to siblings of non-parenting teens, adolescent siblings of teen parents:

  • Are 2-6 times more likely to become pregnant.
  • Are more likely to be sexually active during early adolescence.
  • Tend to have lower educational aspirations and more problems at school - characteristics associated with increased risk of early sexual activity and pregnancy. 

GENESISTER (jen-a-sister) is a partner program to the award-winning GENESIS Program for pregnant and parenting teens. GENESISTER was developed in response to the high number of GENESIS siblings who become teen parents themselves.


To participate, youth must be:
  • Female.
  • The sibling of a pregnant or parenting teen (a.k.a. a teen aunt).
  • Between the ages of 11 and 17.
  • A resident of Boulder County.

For more information or to refer a teen, please call 303-678-6139.

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Program Services

  • Individualized case management for teens and their families.
  • Group-level intervention with evidence-based curricula for teens.
  • Pro-social groups that include positive peer functions such as sport- and art-based activities.
  • Service learning opportunities.
  • Educational and career advancement support activities.
  • Group- and individual-level support for parents of GENESISTER participants.

Program Goals

The goal of GENESISTER is to reduce births among the siblings of teen parents by:  

  • Delaying sexual initiation.
  • Increasing correct and consistent use of contraception among sexually active youth.
  • Reducing the age gap between partners.
  • Encouraging career and educational opportunities. 

Support for this program was provided by a matching grant through the Robert Wood Johnson Foundation Local Funding Partnerships program.

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The GENESISTER program is also funded by grants from the Rose Community Foundation and the Temple Hoyne Buell Foundation.

GENESISTER Annual Report

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Boulder: 303-413-7529
Longmont: 303-678-6139
En Español: 303-678-6151
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