About three years ago, I cut milk from my diet and immediately became able to breathe through my nose while lying on my side - something I'd not been able to do for a long time. So I stuck with that, but in the meantime, had a bone scan and discovered I had borderline osteopenia (probably due to years on being house/bedbound). I was advised to take supplementary calcium, which I did, in the form of calcium citrate. But then I read that it ends up in your arteries and raises your risk of heart attack (and recently, dementia). So I stopped and asked an NHS dietician for dietary calcium sources, but the main ones aren't much use for me because they trigger migraines. So I thought I'd retry milk. I've now tried A2 milk (different kind of protein from A1 milk, which I haven't retried yet) and it gave me stomach pain and a nose so streaming that I had to stay up four hours past my bedtime before I could breath properly lying down again. I take it that's an allergic response rather than an intolerance? Wondering whether to try different milks now - A1 cow's milk, maybe buffalo milk, sheep's milk, goats', lactose-free... Anything else I should try? Or am I going to react to all of it?