According to its website, LARCs are the most effective method of birth control. Examples of LARCs are IUD's and the hormonal contraceptive implants that normally go in your arm. They said they're ...

A total of 87 prematurely born individuals with very low birth weight, i.e. under 1500 grams, participated in the study. They were compared with a control group of 109 individuals born full-term.