In 2013, actress Anne Hathaway was in line to join the string of famous celebrities who've posed with the classic white moustache for the “Got Milk?” campaign when she discovered she was lactose intolerant. Of course, her appearance was canceled.

But in 1999, Whoopi Goldberg, who is also lactose intolerant, did get to do her campaign, quipping, "Lucky for us lactose-intolerant folks, there's lactose-free milk."

If you're lactose intolerant, you're on a dairy-free diet, or you just don't like cows' milk, chances are you're looking for the best nondairy alternatives.

Well, researchers at McGill University have weighed the pros and cons of the four most popular varieties: soy, coconut, almond, and rice.

Soy milk came out on top because it contains more proteins and isoflavones (loaded with cancer-fighting properties).

But, say the researchers: "Women who are pregnant, nursing, or attempting to become pregnant should use soy foods with caution and be aware that soy formula may not be the best option for their babies. ... Moderation is likely key and the incorporation of real foods, as opposed to supplements or processed foods to which soy protein is added, is probably essential for maximizing health benefits."

Rice milk got the worst rating because it has little nutritional value. The researchers note that without proper care, using rice milk can result in malnutrition, especially in infants.

As for coconut milk? It offers no protein, say the researchers, and lots of saturated fats.

And almond milk? It's a pretty good choice, delivering healthy monounsaturated fats that help lower bad LDL cholesterol.