Losing weight can be a great way to get healthy, but a negative aspect to losing ways to too quickly could be hair shedding. According to Business Insider, "You could shed more hair than normal... if your diet includes restricting certain foods and thus nutrients -- like iron, zinc, and protein -- hair shedding could occur... Super low-calorie diets in general often result in hair shedding because your body is running on 'the miniumu' and therefore must distribute energy and nutrients accordingly... your hair doesn't amek the cut.