Decreased appetite can result from infections, stress, hormonal imbalance, gastrointestinal disorders, liver disease, kidney dysfunction, or side effects of medications. Psychological factors such as anxiety and depression also suppress hunger signals regulated by the hypothalamus. Chronic illnesses like cancer and metabolic disorders further disrupt normal appetite control. Certain antibiotics may cause nausea, abdominal discomfort, or altered taste, which can temporarily reduce food intake. Patients using medications obtained through a reliable cephalexin capsules supplier may occasionally experience mild gastrointestinal upset contributing to appetite loss. Persistent or severe appetite decline requires clinical evaluation to rule out systemic disease and nutritional deficiencies requiring medical intervention.