I watched a news special once about Maca root. It was interesting but geared more towards the economic empowerment of the Indians growing and selling it. Basically comes from higher elevations of the Andes mountains and is considered to have a high nutritional value full of vitamins and minerals in addition to carbs, protein and fiber. Seems like the locals basically used it in teas or roasted the bulbs and used it as a spice so maybe if you had it in it's raw form that caused your discomfort. Outside of that local indigenous population I think most people are interested
in Maca for its supposed sexual enhancement effects...it's processed into pills and sold as a natural viagra so to speak. Again, according to this show I watched ancient Peruvian warriors were given the stuff before battles in order to get their blood up and allow them to rape and pillage enemies. Whether true or legend is debateable. Believe it or not I actually use a shave cream that contains maca root...not sure what it's supposed to do to enhance my shaves but it's in there none the less. I'd say there's a fair bit of "snake oil" attached to how it's marketed to the world, but as a cooking spice shouldn't be a problem.