In Vedic astrology, Ketu is considered as a shadow planet and is often associated with spirituality and mysticism. It represents detachment, introspection, and enlightenment. When this elusive planet occupies the 1st house in a Cancer lagna, it can cause significant changes in one's life.
The first house of the horoscope signifies self-expression, physical appearance, personality, and overall well-being. The placement of Ketu in this house indicates that the native may undergo radical transformations related to their identity or sense of self. They may feel detached from worldly pleasures and pursuits and may have a deeper yearning for spiritual growth.
Since Ketu also aspects the 3rd house, there could be some adverse affects on the native's relationship with siblings or close relatives. There might be misunderstandings or conflicts between them that could take time to resolve. However, if handled with patience and understanding, these issues can also bring positive changes in personal bonds.
Ketu's aspect on the 7th house could affect relationships with partners or spouses. Those looking for marriage might face delay, while those who are already married could experience strained relationships due to a lack of emotional bonding. There may be times when they feel detached from their partners, which might lead to feelings of isolation and loneliness.
In terms of career prospects, Ketu's presence in the 1st house and its aspect on the 10th house could have conflicting effects on one's professional growth. While it could increase the chance for success by providing clarity of thought and focus towards achieving goals; at times misguided guidance due to detachment from material progress can make it challenging to achieve long-term goals leading to instability in career growth.
As such natives may find themselves drawn more towards religious or philosophical work than conventional high-paying jobs without any obvious reason for choosing these paths.
Overall, having Ketu placed in the 1st house along with its aspect on multiple houses is likely to affect various areas of an individual's life. Thus, it is necessary to be aware of its impact and try to channelize Ketu's energies positively.
In conclusion, individuals with Ketu placed in the 1st house in Cancer lagna would have a complex relationship with their sense of self and may take up unconventional lines of work or spiritual pursuits. While their perspective might differ from that of others, they can harness this unique approach to achieve success; however, it is important for them to maintain emotional connections with people around them and have patience even when facing challenging situations.