Salt, caffeine and alcohol intake may interfere with the balance of calcium in the body by affecting the absorption of calcium and increasing the amount lost in the urine. Moderate alcohol intake (one to two standard drinks per day) and moderate tea, coffee and caffeine-containing drinks (no more than six cups per day) are recommended. Avoid adding salt at the table and in cooking
World Health Organization. Salt reduction and iodine fortification strategies in public health: report of a joint technical meeting convened by the World Health Organization and The George Institute for Global Health in collaboration with the International Council for the Control of Iodine Deficiency Disorders Global Network, Sydney, Australia, March 2013 . Geneva: World Health Organization; 2014.
  Home visits  ↑/NC knowledge about hygiene and sanitation, ↑ hand-washing, ↑ water quality, ↓/NC diarrheal morbidity, ↓ intestinal parasite prevalence  ↑/NC knowledge about hygiene and sanitation, ↑ hand-washing, ↑ water quality, ↓/NC diarrheal morbidity, ↓ intestinal parasite prevalence  ↓ maternal mortality, ↑/NC knowledge about hygiene and sanitation, ↑/NC hand-washing, ↑ water quality, NC waste disposal, ↓/NC diarrheal morbidity, ↓ intestinal parasite prevalence  ↑/NC knowledge about hygiene and sanitation, ↑ hand-washing, ↑ water quality, ↓/NC diarrheal morbidity, ↓ intestinal parasite prevalence 
Globally, women's access to health care remains a challenge, both in developing and developed countries. In the United States, before the Affordable Health Care Act came into effect, 25% of women of child-bearing age lacked health insurance.[176] In the absence of adequate insurance, women are likely to avoid important steps to self care such as routine physical examination, screening and prevention testing, and prenatal care. The situation is aggravated by the fact that women living below the poverty line are at greater risk of unplanned pregnancy, unplanned delivery and elective abortion. Added to the financial burden in this group are poor educational achievement, lack of transportation, inflexible work schedules and difficulty obtaining child care, all of which function to create barriers to accessing health care. These problems are much worse in developing countries. Under 50% of childbirths in these countries are assisted by healthcare providers (e.g. midwives, nurses, doctors) which accounts for higher rates of maternal death, up to 1:1,000 live births. This is despite the WHO setting standards, such as a minimum of four antenatal visits.[177] A lack of healthcare providers, facilities, and resources such as formularies all contribute to high levels of morbidity amongst women from avoidable conditions such as obstetrical fistulae, sexually transmitted diseases and cervical cancer.[6]
Choline: Some studies link low choline levels to increased risk of neural tube defects. Recommended levels have been established for this nutrient, but it's easy to get enough in your diet. Eggs are an excellent source of choline, for example. “Eating a few eggs a week should give you all you need,” Frechman says. “Most people can eat the equivalent of an egg a day without worrying about cholesterol.” Other choline-rich food sources include milks, liver, and peanuts.
Women's menstrual cycles, the approximately monthly cycle of changes in the reproductive system, can pose significant challenges for women in their reproductive years (the early teens to about 50 years of age). These include the physiological changes that can effect physical and mental health, symptoms of ovulation and the regular shedding of the inner lining of the uterus (endometrium) accompanied by vaginal bleeding (menses or menstruation). The onset of menstruation (menarche) may be alarming to unprepared girls and mistaken for illness. Menstruation can place undue burdens on women in terms of their ability to participate in activities, and access to menstrual aids such as tampons and "sanitary pads". This is particularly acute amongst poorer socioeconomic groups where they may represent a financial burden and in developing countries where menstruation can be an impediment to a girl's education.[113]
Family planning and birth spacing can influence the nutrition of adolescent girls, women of reproductive age, and women with young children by reducing the number of adverse outcomes associated with pregnancy and abortion. For adolescent girls, in particular, pregnancy is associated with increased risk of birth complications, anemia, hindered linear growth, and loss of educational attainment (8, 107). Delaying early child marriages and providing access to family planning, particularly for young wives, allow girls to achieve their maximum growth potential (8, 142). However, for women with young children, there was scarce evidence from observational studies to suggest that greater birth spacing had any impact on anthropometric status (BMI, weight), micronutrient status (anemia, as well as serum zinc, copper, magnesium, and folate), and maternal mortality outcomes (13, 107, 143–147). Findings were mixed, which was attributed to sample size and other confounding factors such as maternal age, breastfeeding status, and supplementation status (146, 147). The strongest evidence of the impact of birth spacing on women's nutrition was related to increased risk of preterm delivery and maternal anemia in interpregnancy intervals <6 mo (14, 146, 147) and increased risk of pre-eclampsia in intervals >5 y (107).
Micronutrient supplementation programs for vitamin A, iron and folic acid, calcium, zinc, and multiple micronutrients effectively impacted the micronutrient status of pregnant and lactating women, as well as women of reproductive age and adolescent girls (13, 14, 33, 35–48). Interventions making use of multiple micronutrients were more effective at changing plasma micronutrient concentrations than interventions focused solely on 1 nutrient alone (38, 42). In countries with comprehensive programs for iron supplementation during pregnancy, anemia prevalence dropped (1, 49). Positive health impacts of supplementation were most notable among pregnant women who were deficient and at risk of low intake (43, 50). However, there were some studies that showed inconsistent or limited evidence for the effectiveness of supplementation on other maternal health outcomes (31, 51–58).
There remain significant barriers to accessing contraception for many women in both developing and developed regions. These include legislative, administrative, cultural, religious and economic barriers in addition to those dealing with access to and quality of health services. Much of the attention has been focussd on preventing adolescent pregnancy. The Overseas Development Institute (ODI) has identified a number of key barriers, on both the supply and demand side, including internalising socio-cultural values, pressure from family members, and cognitive barriers (lack of knowledge), which need addressing.[67][68] Even in developed regions many women, particularly those who are disadvantaged, may face substantial difficulties in access that may be financial and geographic but may also face religious and political discrimination.[69] Women have also mounted campaigns against potentially dangerous forms of contraception such as defective intrauterine devices (IUD)s, particularly the Dalkon Shield.[70]
Although there is evidence that interventions can address widespread malnutrition among women, there is a lack of operational research and programs to tackle the issue. There is an imperative for the nutrition community to look beyond maternal nutrition and to address women's nutrition across their lives (3). How we reach women matters, and different delivery platforms are more appropriate for some women than others. Delivery platforms for reaching young mothers are different from those for adolescents and postmenopausal women. There is a need to intentionally consider strategies that appropriately target and deliver interventions to all women. This means that nutrition researchers and practitioners need to further adapt existing strategies and modes of delivery to adequately engage women who might not be in clinic settings (78). This also requires that researchers and practitioners explore how to deliver nutrition interventions to women and at different stages of life in order to reduce inequities in the delivery of nutrition services and to reach women missed by programs focusing on maternal nutrition alone.
Calcium: “Getting enough calcium is important for all ages, but it's particularly important during adolescence and early adulthood, when bones are absorbing calcium,” says Heather Schwartz, MS, RD, a medical nutrition therapist at Stanford University Hospital and Clinics. Calcium and vitamin D are often paired in fortified foods such as milk. The reason: The body needs D in order to absorb calcium.

The effect of education programs on nutrition outcomes is difficult to assess because programs often have poor baseline data or nutrition outcomes are not evaluated (174, 182). Studies that used longitudinal analyses and “natural” experiments (e.g., before and after a national education policy) found that education was associated with reduced fertility (183, 184), and delayed early marriages and pregnancies (184–187). The impact was more significant for higher levels of education (185). However, 1 study in Malawi identified negative associations between education and timing of first birth, although these findings were largely not statistically significant (188). Secondary education for adolescents and women of reproductive age also showed no impact on women's empowerment (184), although it did show an impact on improved literacy and leadership (174). Educational interventions that provided conditional cash transfers (CCTs) and school feeding, as well as other forms of social protection to families of enrolled girls, were associated with greater school enrollment and attendance (189–191), improved test scores (189, 190), reduced gender gaps (192), and reduced hunger (190, 191).