In my experience, women don't usually eat enough protein, especially lean protein and plant-based protein sources like nuts, beans, whole grains, and legumes. Protein is important, especially when you're working out and losing weight - you're likely doing exercises where you're actually building muscle. When building muscle, your body needs to get the protein building blocks somewhere, both to build new muscle and repair injured/damaged/broken-down muscle. Being a bit over here and there is ok. It's time to worry when you have situations where kidney function might be hampered, so it's important to keep properly hydrated, too.