Final answer:
Being underweight can make a person more susceptible to diseases and can cause hair loss. Heart valve damage and nausea and vomiting are not directly associated with being underweight.
Step-by-step explanation:
Being underweight can pose several health risks, and one of the best representations of such risks is susceptibility to disease. When a person is underweight, their immune system may be weakened, making them more prone to illnesses and infections. This is because a lack of essential nutrients can compromise the body's ability to fight off pathogens.
Furthermore, underweight individuals may experience hair loss. Malnutrition, caused by insufficient intake of nutrients, can lead to thinning or loss of hair. This occurs when the body doesn't receive enough proteins and vitamins necessary for healthy hair growth.
While heart valve damage and nausea and vomiting are associated with other health conditions, they are not directly linked to being underweight. It is important to maintain a balanced diet and engage in regular physical activity to ensure a healthy weight and minimize the risk of various health issues.
Learn more about Health risks of being underweight