Why did I suddenly develop body odor?

Sudden onset of body odor (bromhidrosis) may be related to multiple factors, including: 1. Lifestyle habits: Poor personal hygiene, such as infrequent bathing, not changing clothes regularly, or wearing non-breathable clothing, may lead to bacterial growth in areas like the armpits, thereby causing body odor. 2. Dietary habits: Recent changes in dietary habits, especially excessive consumption of spicy or irritating foods, may stimulate sweat glands to secrete more sweat, increasing the risk of body odor. 3. Emotions and hormones: During periods of emotional excitement, stress, or hormonal fluctuations (such as puberty, pregnancy, or menopause), sweat glands may become more active, leading to the occurrence of body odor. 4. Microbial infection: Poor ventilation in the armpit area, combined with bacterial infection, may also suddenly cause body odor. 5. Genetic factors: Body odor is closely related to genetic factors. Some individuals may suddenly develop symptoms of body odor under certain conditions due to inherited predispositions.