P+ does not require health information. On the contrary, you are made subject to a provision period.
On admission, compulsory members and members under a company scheme are made subject to a 2-year provision period, while individual members are made subject to a 4-year provision period on payment to P+ for a consecutive period of 2 and 4 years respectively.
A 2-year provision period takes effect on contribution increases, payment of single contributions, resumption from dormant membership as well as opting for and changing the disability pension, children's pension, pension life cover, payment guarantee and the group insurance. If on expiry of the pension life cover related to retirement or reaching age 68 you opt for a corresponding pension guarantee, a new provision period will not take effect.
You can read more about provision periods in the Insurance terms