Stuff Ltd: Once a woman was diagnosed and treated for her sleep apnea, other pieces of her health began to fall into place.

When Janine Langdon-Lee went to her doctor so tired she felt like she was “walking in wet concrete”, the then 48-year-old expected a diagnosis of perimenopause.

But the Wellington woman was suffering from the condition obstructive sleep apnoea. Her case was so severe she was having 114 events per hour; during the night, she would stop breathing nearly twice a minute.

By the time Langdon-Lee saw her doctor, she was getting so little sleep overnight that she would routinely fall asleep during the day.