Bruce Willis’ family first announced his diagnosis of aphasia (a disorder typically caused by damage to the area of the brain that controls language expression and comprehension) in Mar 2022. As of today, his condition has worsened and has developed into a form of dementia.
Based on his Vedic astrological birth chart, his health may likely to have started as early as 2020, when he started his Saturn/Rahu period.
For reference, Bruce Willis was born on 19 March 1955 at 6.32pm in West Germany (His mother is a German, father an American).
Rahu and Ketu give their effects closely together since they are two ends of the same entity in ancient mythology.
So any affliction by Ketu will also manifest during Rahu’s period, in his case Rahu’s sub-period.
In his natal chart, Ketu closely afflicts his Mercury which is already weak due to its placement in the 6th house of diseases. Mercury is associated with the brain, cognitive abilities, speech and the nervous system.
The Mahadasha lord, Saturn is involved in a Papa Sankhya Yoga (which is bad) in the D6 chart (the divisional chart for health matters) and badly placed in the 12th House of losses. Its conjunction with Jupiter will act as a protection from serious illness for most part of the Mahadasha period.
Looking Rahu in D6, it is placed in a challenging 8Th house and is associated with 2 malefics, Ketu (yes, Rahu and Ketu can be in the same sign in some divisional charts) and Sun. Association with benefics such Moon (debilitated), Mercury and Jupiter provided some alleviation.
All these indicated an inclination towards illnesses that affect the cognitive abilities.
Bruce Willis has recently entered his Jupiter sub-period, leaving the problematic Rahu sub-period behind, thus we should expect some improvements in his condition and surely the deterioration of his overall heath can be slowed down.
(Note: The above analysis is only using Vimshottari Dasha. I have not incorporated the use of planetary transits which can give even more insights).
Regards
Alvin