When it comes to Rahu Mahadasha effects on marriage, you need to be careful enough. It says that marriage during the period of Rahu Mahadasha is not advised because you can face a loss such as money, materialistic things, etc. Rahu Mahadasha supports the idea of selfishness while marriage is about love and care. However, there are also some benefits of Rahu Mahadasha. It can also bring wealth, knowledge, marriage with beautiful women, spiritual gains and more.