Unlike India, Nepalese women enjoy quite a high profile and less inequality. However, it is still noticeable that they do much of the hard physical work in the fields. Carry a few litres only. Water in the populated areas is not recommended. I recommend either a portable filer, iodine tablets.
Bottled water is widely available in touristy areas but difficult to come by in the country areas.
Food Food is good, though variety is limited. Fruit is not widely available except for bananas. Hygiene standards are sometimes questionable. Water is always offered but avoid it - it's usually from a barrel rather than a hand pump. Eat with right hand and wash hands before and after.