A diet high in salt increases swelling by causing fluid retention, which also puts a strain on breast tissue. Some recent studies reveal that fatty foods, mostly animal fats, also contribute to breast pain. The reason is less clear but it may have to do with the animals own hormone and their diet. Again the reason is unclear. We are only beginning to explore the links between the immune system, emotions, and our hormones.
Some medications can cause or contribute to breast pain.
Hormones, either birth control pills or hormone replacement therapy. The amounts of estrogen or progesterone in the pills may not be right for particular women. Some psychiatric medications and antidepressants may increase breast pain. Cholesterol-lowering and heart medication my cause breast changes. The common therapy for breast pain is treating the symptoms.