I think it can be any age but especially after pregnancy and increases with age. Ensure you are doing your kegel exercises and get some period/moisture wicking underwear! Modibodi are great! Expensive but worth it.

I would highly recommend a women’s physiotherapist!! It’s common after babies at any stage but not ‘normal’ in that there are things that can help. I saw one 2 years after my birth and the physio had a cool ultrasounds machine they used in the appointment to check I was using my muscles correctly. They also checked everything was in place and there were no prolapse causing issues. Women’s physics specifically are trained to help in this area! Worth googling any in your area (I was surprised there were heaps around us!)
All the best.
(And it may seem awkward at first to go see someone but they are so professional)

There is no “normal age” to start experiencing LBL. Many different factors can determine the age someone gets and to what degree. I went to my Doctor and got a referal to use a “Wave Chair”. I had to go a couple of times a week for about 8 weeks. Each session doesn’t take that long and it’s non-invasive and has worked a treat for me. I now bounce on the trampoline with my kids with no issues at all and even getting caught off guard with an unexpected sneeze is no drama these days

Sometimes just a sneeze or laugh will do it. If you are concerned though see your local doctor he may suggest pelvic exercises etc, If need be wear a light pad but definitely have it investigated.

Bladder leakage can occur in women (and men) at any age. It is more often brought on from activities that cause pressure on your bladder such as coughing, running, jumping, or sneezing. It happens when the pelvic floor muscles- that support the bladder- weaken. The weakened muscles can be caused by pregnancy, previous vaginal births, obesity or being overweight or chronic urinary tract infections. Sometimes, incontinence may occur without any of these risk factors. It is best to discuss this with your doctor.

Not sure if its age related – perhaps seek gp advice on this

I do not think there is an age that it is normal. Depends upon why it is happening and when. If worried wear a pad and see a Dr or someone who you trust. Might just need to do some exercise to control that area.