A man in his 50s can’t exactly say whether it’s a yin or yang deficiency, everyone has different symptoms, so you can’t rely on gender or age to determine whether it’s a yin or yang deficiency.
1. Yin deficiency: the main manifestations of body thinning, dry mouth and throat, cheekbones flushing (cheekbones on both sides of the face color red), five heart heat (two hearts and two feet heart heat, and consciously heart and chest heat), hot flashes (a burst of fever), night sweats (sleep sweating abnormally, waking up sweating to stop), short yellow urine, stool dryness and so on.
2. Yang deficiency: mainly manifested as coldness (fear of cold, cold limbs), spontaneous sweating (involuntary sweating during the day, aggravated by the slightest movement of sweating), clear and long urine, thin stools, etc..
If you have any of the above symptoms, it is recommended that you seek prompt medical attention.