"the pill".
Yes, the birth control patch is a hormonal method
The copper IUD has no hormones, and lasts for 5-7 years. And of course there are always condoms and the sponge.
It is not a barrier method. It simply releases hormones that prevent your body from producing matured eggs. If the eggs aren't mature, they can't be fertilized.
Hormones control the release of eggs, and Birth Control pills either regulate or prevent that release.
Hormones control the release of an egg
Birth control patch
Birth control pills have hormones because hormones are the chemicals that affect ovulation and other aspects of fertility in the female body.
Diane pills are a birth control method that can affect hormones. Depending on your hormones, you can gain or lose weight. Each individual is affected differently.
Birth control is what is used to prevent unintended pregnancy, there are multiple different types of birth control that work in different ways, it is ignorant to say 'birth control' to mean one specific type of birth control. Without knowing what type of birth control you're referring to we cannot answer your question - some birth control does absolutely nothing to your hormones, some birth control completely shuts down your hormones.
If he is taking female birth control pills forget him. They contain hormones and he is not taking them for birth control.
Birth control hormones are likely to keep endometriosis from getting worse. If you have severe symptoms or if birth control hormones and NSAIDs don't work, you might try a stronger hormone therapy.
Birth control vaccines don't exist, but you can get birth control shots.