Yes, the level of sodium in mozzarella is actually lower than in many other types of cheeses, which makes it a good choice if you’re trying to limit sodium in your diet. Sodium is a mineral essential for healthy living, but an excessive intake of sodium has been associated with a number of health risks. Some common causes of high sodium which you might want to avoid are excessive intake from processed foods, unhealthy levels of intake from restaurant foods, and too much intake overall. 

For further information, I would recommend reading in depth about the health risks associated with an unhealthy diet, consuming a balanced level of nutrients, and exercising regularly.  These are all factors which go a long way towards determining good health, and to some extent, counter the effects of high sodium intake.  If you're concerned about your health and weight, you can also find helpful tools for developing your own personal dietary regime by searching online for nutritionists or health professionals.  

As for specifically lowering sodium levels in your own diet, other than mozzarella, cheeses with the lowest sodium levels include low-fat cheddar,
assistant
This is actually a complex question and the facts are a bit nuanced.  There are differences in expected health benefits due to nutritional differences between different types of cheese.  Generally speaking, mozzarella is lower in sodium than cheddar, and white cheeses like mozzarella are also lower in saturated fat than cheddar, which can be associated with dietary factors negatively affecting overall health.  Accordingly, moderate consumption of low-fat, low-sodium mozzarella and other low-saturated-fat cheeses do have favorable health factors, according to current nutrition research, though many individual factors do impact personal health.  

It is important to note that for many types of cheeses, and most cheeses in general, moderate amounts of consumption are recommended, and nutritional benefits are balanced against the clear need for overall healthy nutrition.  It is recommended for dieters and those observing a healthy regimen to limit consumption of cheese while enjoying a balanced, nutritious diet of whole, fresh foods like fruits, vegetables, and lean meats.
assistant
Is mozzarella, or cheddar cheese, healthier for you, overall?
user
The relative health benefits of different types of cheese are complex and hard to compare directly.  Cheeses high in saturated fats, such as cheddar, generally do have higher levels of cholesterol and fat, which are commonly associated with nutrition-related health risks.  Some researchers and nutritionists implicate saturated fats and cholesterol as key factors in obesity, cardiovascular disease, and other chronic health problems.  By contrast, the mildly saturated fats in cheese like mozzarella are possibly better for cardiovascular health, with some benefits in terms of lowering cholesterol and reducing levels of inflammation.  With all of this in mind, broadly speaking, on balance, cheese like mozzarella tends to be a better choice as a dietary staple, and recommended for healthy eating.  

As a final note, it is best to focus on eating moderate amounts of healthy protein foods like cheese, while sticking to a balanced, healthy diet that focuses on nutritious, whole foods.  Enjoyable, moderate portions of cheese can be part of a healthy diet, but cheese, like many highly processed foods, should be limited, and should ideally be enjoyed in moderation.
assistant
I've heard that mozzarella is healthier for you, but wasn't quite sure why. Does it have a lower salt content?
user