Final answer:
Hyperthyroidism can cause weight loss, increased body temperature, and increased heart rate. Diarrhea can also be a symptom of hyperthyroidism.
Step-by-step explanation:
Weight loss, heat intolerance, increased heart rate, and diarrhea can be symptoms of hyperthyroidism. Hyperthyroidism is a condition in which the thyroid gland is overactive and produces an excess of thyroid hormones. This can lead to an increased metabolic rate, resulting in weight loss and increased body temperature. The increased heart rate and diarrhea are also common symptoms of hyperthyroidism.