Hayanaratna · by Balabhadra
Chapter 6 · The Twelve Houses
द्वादशभावविचाराध्यायः
अयमर्थः ॥ षष्ठभावस्यांशादिभुक्तं स्वल्पं तदा रोगभयमल्पं भुक्तांशानामाधिक्ये रोगाधिक्यं ज्ञेयमित्यर्थः ॥
This is the meaning. If the degrees and so on of the 6th house already travelled are few, the fear of illness is small. If the travelled degrees are many, know that the illness is greater.
Simple meaning: If little of the 6th house is travelled, the fear of illness is small. If much is travelled, the illness is greater.
Classical view, not medical advice.
विशेषमाह समरसिंहः ॥
To judge illness in the year, look at the year lagna, the lagna of the last new or full moon, and their two lords.
ते चत्वारोपि हि शुभदृष्टास्सौम्यमुथशिलाश्चेत्स्युः ॥
The four, looked at by good planets and the Sun and Moon: no illness in the year.
क्रूरहतैश्शशिसूर्यादृष्टैर्ग्रहधातुतो मांद्यम् ॥
The four struck by bad planets and not seen by Sun and Moon: illness. A planet in the 6th brings illness of its own humour.