Public veterinary consensus is that neutering substantially lowers the risk of pyometra and mammary tumours in females, and reduces roaming and fighting driven by oestrus in males.

Hormonal status affects weight, coat and behavioural rhythm. Calling and marking during heat are harder to manage in multi-cat homes and rented flats.

The trade-off is a lower metabolic rate and higher obesity risk after surgery, so portions and activity need recalibration rather than staying on the pre-surgery plan.

Timing, anaesthetic risk assessment and pre-operative tests are for a veterinarian to decide. This article offers decision dimensions, not individual medical advice.