2. The disadvantages of eating melon seeds often. Although eating melon seeds often has certain benefits, it is not recommended to eat too much. Most melon seeds are fried dry goods. Eating too much may cause excessive internal heat, leading to symptoms such as dry cough, sore throat and constipation. In addition, the heat of melon seeds is also relatively high. If you often eat too much, it may lead to obesity. Eating melon seeds often may also damage teeth and easily cause dental caries.