How is red pesto healthier than tomato sauce? Red pesto has more oil in it, seems like.

I think pesto has more variety in nutrients than marinara, especially if the oil used in pesto is considered to be a healthy fat to consume.

I think it’s because tomato sauce contains a lot of sugar

It's the sugar / carb content that's unhealthy, not the oil content

Thanks for answering my question. I just try to be careful with my oil and sugar intake. I also noticed pesto can have cheeses in it. I limit the amount of cheese I use in my food, even though I love cheese.