Cutting your hair short doesn't directly help with hair loss, but it can make your hair appear fuller and thicker. This is because longer hair can weigh down on the roots and make hair look thinner and more sparse, while shorter hair has less weight and can stand up more easily, giving the appearance of more volume. However, it's important to note that cutting your hair short won't necessarily prevent or reverse hair loss. Hair loss can have many different causes, including genetics, hormonal changes, medication, illness, and stress. If you're experiencing hair loss, it's important to speak with a healthcare professional or dermatologist to determine the underlying cause and appropriate treatment options.