1) General Feebleness. Emaciation, paleness, colorless lips and gums.
2) Tuberculosis. Coughing, sore lungs, shortness of breath.
3) Defective Development. The "self abuser" remains physically and mentally small.
4) Sudden Change in Disposition. When a cheerful, pleasant boy suddenly becomes morose and peevish, it's a dead giveaway that "solitary indulgence" is the cause.
5) Lethargy. Weariness, indifference, dullness and vacantness in the eyes.
6) Insomnia
7) Stupidity
8) Fickleness
9) Untrustworthiness
10) Love of Solitude
- From "Plain Facts for the Old and Young" by John Harvey Kellogg, maker of Kellogs Corn Flakes, which were originally made to prevent masterbation.