public void decrementNutrientLevels(boolean slow) {
		for (Nutrient nutrient : nutrientLevels.keySet()) {
			int level = nutrientLevels.get(nutrient);
			
			if (level > (double)Config.maxNutrientLevel / 2.0 && slow)
				return;
			else if (level <= (double)Config.maxNutrientLevel / 2.0 && !slow)
				return;
			
			addNutrientLevel(nutrient, -1);
		}
	}