Gadbury: Natal Rules for Health and Sickness
This is from the Genethlialogia, p 121.
“1. If the Lord of the Sixth be fortunate, and the sign of the Sixth also; the Native will be subject but to few Infirmities and Diseases; and those that are, he will be quickly cured of.
“2. When good planets are posited in the sixth House, in good Configuration of the Luminaries, or the Lord of the Ascendant; the same.
“3. When the Moon is fortunate and strong, and in good Configuration with the Lord of the sixth House, or beholds the cusp of the Sixth with a sextile or trine; the Native will then be conveniently healthful.
“4. If the Lord of the sixth House be in good Configuration with the Lord of the Ascendant; the Native will not be Sickly.
“5. When happy and benevolent Stars, viz., of the nature of Jupiter and Venus, be posited in the sixth House, they prevent all violent and desperate Diseases, and add health to the Native.
“6. If the Lord of the Sixth, the sixth House, or Luna, be not infortunated of Saturn, or Mars, or the Tail [i.e., the South Node], nor yet Combust or Peregrine; the Native will be healthful, and free from all dangerous Distempers.
“7. But if in a Nativity the contrary to these happen, the Native will be subject to Infirmities and Disease.”