With food allergies on the rise, dairy substitutes abound as well. Food allergies, however, might be just one reason to avoid the milk mustache.Conventional dairy products are loaded with hormones and antibiotics. If you consume dairy spend a little more on hormone and antibiotic free, opt for organic. If possible, find a grass fed source; grass-fed cattle have less inflammation than grain fed cattle, making them the much healthier choice for meat and dairy.