1)When Your rising or Lagan Falls in Cancer sign then You belongs to Cancer Ascendant.
2)Meaning of Cancer Ascendant
1st House has Cancer Sign and lord is Moon. Moon is also Lagan lord.
2nd House has Leo sign and Lord is Sun.
3rd house has Virgo sign and Lord is Mercury.
4th House has Libra sign and Lord is Venus.
5th house is Scorpion sign and Lord is Mars.
6th house is Sagittarius sign and Lord is Jupiter.
7th House is Capricorn Sign and Lord is Saturn.
8th House is Aquarius Sign and Lord is Saturn.
9th house is Pisces Sign and Lord is Jupiter.
10th house is Aries sign and Lord is Mars.
11th house is Taurus Sign and Lord is Venus.
12th house is Gemini Sign and Lord is Mercury.
3)Benefice Planet for Cancer Ascendant
Mars—Mars is Lord of 5th and 10th house. Mars is Most benefic for Cancer Ascendant(5th lord is benefice and 10th lord due to Kendradipati rules is benefice) so Mars is Most benefice. Again due to lordship of Kendra(Vishnu sthan) and Kona(Lakshmi sthan) at same time Mars is a yogkarak planet For Cancer Ascendant. Means where mars is sit in cancer Ascendant chart, Mars give a Rajyyog results.
Jupiter—Jupiter is Lord of Most benefice Kona. So Jupiter is second Benefice for Cancer Ascendant.
Malefic For Cancer Ascendant—
Mercury–Mercury is Lord of two Dussthan(lord of 3rd and 12th house) also Moon is enemy for Mercury so Mercury is worse Malefic For Cancer Ascendant.
Venus–Venus is Lord of 4th house (Kendradipati Dosh) so malefic and Lord of 11th house so malefic. So venus is also bad for Cancer.
Moon—Moon is Lord of 1st house But is neutral for Cancer Ascendant. Same time benefic (Lord of lagan) and Lord of Kendra(Kendradipati Dosh) so it is Neutral.
Saturn—Saturn is Lord of 7th (Kendradipati rules) is Beneficial and Lord of 8th house ( Dussthan) Melific so Saturn is Neutral for Cancer Ascendant.
Sun— Sun is Lord of 2nd house so it is Neutral.
Marak—Saturn is Prime Marak for Cancer Ascendant. Sun is also Marak as lord of 2nd house. But Most Marak acting planet is Mercury.
4)Body Physique ——-
1st house of cancer Ascendant is cancer sign and Lord is moon so body physique depand on cancer sign and Lord moon. So Cancer natives are Medium in heights (Cancer Sign is indicating medium height), Full round shape face (Cancer shape is just like circle),Fair color (Both cancer and Moon is indicating fair color). They may be charming and attraction in their face (cancer charming and Leo give magnetic Attraction).
5)Health —Cancer sign belongs to water element. So cancer native body physique has great role of water element. So generally they are suffering from disease related to Kapha Dosh.
6)Mentality , Nature and Behavior —- Mentality, nature and behavior depend on 1st and 5th house. 1st house has cancer sign and Lord is moon so they are emotional. Again 5th house Scorpion sign is also watery sign so their mentality is Emotional. So they are very emotional and sensitive (Scorpion 5th house). 4th house has libra sign so their Mind is Active (Flying mind as Air sign) but 5th house Scorpion make their active mind just volatile type. So they quickly show their emotinol temper. Also this position make him Just disturbed (A lot of thinking and getting just emotional or feeling oriented).They are music lover (Mind libra wants music, Entertainment).
Cancer Native are Aggressive in speech (Leo sign in 2nd house is indicating this) but a good in communication(Virgo sign in 3rd house indicated this). So their speech are looking good.
Spirituality is other mental behavior of cancer Ascendant(5th house scorpion and 9th Pisces Sign both are very spiritual sign due to water element and 8th and 12th house of kalpurush).
Cancer Ascendant is home lover so they are true care of their family.
3rd house Virgo makes him a self confident also Sagittarius 6th house increase their mental strength. But their emotional nature is true problem creator in their life.Other one problem is effect of scorpion sign(Hidden quality and dangerous one rashi) in their mentality.