Is osteoporosis a feminist issue?

No need to worry, just be conscious of it and pull your head and neck back when you feel yourself starting to 'hump' .

Strength training is particularly good for osteporosis I believe, but women in general are reluctant to do this in the (false) belief that it will lead them to get unfeminine bulky muscles.

It's so self-defeating in a way, because increasing muscle mass raises the metabolism making it easier to burn fat, whereas sitting around starving and consequently binging will not ever work.
But then we aren't really trying to be slim and fit, we are martyring ourselves to femininity.

It could be considered a feminist issue. The current advice typically given out is quite horrible in context. It's all diet based blaming (if you ate the right things, you would be healthier!). Nutrition actually only plays a very limited role in osteoporosis, exercise has far more to do with bone regeneration.

Recent article on osteoporosis myths and facts

Isn't exercise linked to bone mass as well?

Certainly women are culturally not as encouraged to exercise as much as men, there seems to be less for them, and girls seem to drop out of exercise quite young for various reasons.

But if it is true that women have crapper diets and don't exercise, why do they live longer than men with men statistically having the crapper diet? Will this trend be reversed as time passes?

Don't know.

I do agree that inordinate amounts of women (most of them IME ) have a terrible attitude to food, are permanently on diets, or breaking diets, talk about food incessently, have an unhealthy interest in what others eat, and do that ridiculous thing of having 1/2 a salad leaf for lunch in a terribly worthy way and then stuffing themselves full of biscuits at about 3. (This has been the case with most of the women in most of the offices I have worked in - it's appalling really).

I haven't done any research into dietary guidance as such, but will agree with your link to eating less protein and snacking.

Protein foods are harder to digest and therefore stay in the gut longer, and on the whole, protein-rich foods take more chewing - which is a vital process in digestion and the perception we have of eating to fullfill an appetite.

It was often the women who would forego their food rations during such times, for the sake of men/children.

A chocolate bar after a meal is often seen as a reward, perhaps for 'giving up' vital food.

Albeit subconsciously

Interesting point

For starters a vegan diet can be balanced, though it is sometimes used by an eating-disordered person to control intake.
Dairy is not necessary for bone health.

Women in general do need less to eat than men in general.

However, malnutrition in women as they go without to feed husband and children is certainly a feminist issue, as is the prevalence of EDs amongst girls and women.

Your risk of getting it is also increased if you were bottle fed as a baby. So if you get it and were bottle fed you can blame your mum.