Persons most commonly affected: Males after adolescence

Organ or part of body involved: Male reproductive system

Symptoms and indications: Low energy, fatigue, tiredness, lack of sexual motivation, erectile dysfunction, nervousness, palpitation, spermatorrhoea, noctural emmissions, premature ejaculation, frequent urination and lower back.

Causes and risk factors: Over work, too much exercises, stress or trauma, under weight, malnourishment, obesity, emotional or fear, and difficulties in relationship.