Final answer:
Heavy cream or butter have high fat but lower lactose levels, with butter being particularly reduced in sugar due to the removal of lactose-containing milk solids. Lactose-free milks are also an option. High fat content should be balanced with overall health considerations.
Step-by-step explanation:
The type of milk with the highest fat content but the lowest naturally occurring sugar content is likely to be heavy cream or butter milk, which are dairy products with increased fat and lower lactose levels than found in regular milk. The lactose content in cow's milk is about 4.5%, which makes it the primary sugar present in milk. Whole milk contains more fat than other types, but also contains lactose. However, processing can alter this balance—butter, for instance, has a high-fat content and less lactose, due to the removal of the milk solids containing lactose during its production.
For those looking to reduce lactose intake while still consuming dairy products, lactose-free milks and high-fat dairy products like butter and certain cheeses are an option as they have less lactose than regular milk. It is important to note that while reducing sugar, one must consider the overall health implications of consuming high-fat dairy products.
Furthermore, saturated fats are found mostly in animal products, among which dairy products are a primary source. When seeking to limit sugar intake, one should be cautious of low-fat or non-fat products that may contain added sugars to replace fat content, which could lead to increased body fat and weight gain.