From Thyroid to Stress: 13 Hidden Reasons Behind Unexplained Weight Gain

Even something as simple as dehydration can influence your weight. When the body is low on fluids, it can mistake thirst for hunger, prompting unnecessary snacking. Dehydration also slows metabolism and may leave you feeling fatigued or mentally foggy. Dark urine and infrequent urination are key warning signs that you need more water.