Jupiter is the Lagna lord. It is in the Mithuna rasi, retrograde and moves to the 6th bhava in the bhava chart. It is in the nakshatra of Rahu. It is the lord of 22nd Drekkana too. It forms a Sakata yoga with Moon. It occupies Lagnamsa in Navamsa (amsa counted from natal lagna). It activates both Saturn and Mars which aspect Jupiter too.
Jupiter dasa will have its ups and downs due to Sakata yoga. There could be illness related inconveniences. If there is an existing illness, it could get aggravated.
A Rahu Jupiter Sandhi Shanti will help.