Poor nutrition may be one of the easiest conditions to self-diagnose. Look at the food pyramid and the suggested servings. Look at your diet. Are you getting the recommended daily amounts of fruits and vegetables? Enough calcium? Read the labels and compare what you eat to what you need. You may discover that even if your weight is ideal, you are not getting enough nutrition.

Research findings can take some time before becoming routinely implemented into clinical practice. Clinical medicine needs to incorporate the information already available from research studies as to the different ways in which diseases affect women and men. Many "normal" laboratory values have not been properly established for the female population separately, and similarly the "normal" criteria for growth and development. Drug dosing needs to take gender differences in drug metabolism into account.[6]
Breast cancer is the second most common cancer in the world and the most common among women. It is also among the ten most common chronic diseases of women, and a substantial contributor to loss of quality of life (Gronowski and Schindler, Table IV).[6] Globally, it accounts for 25% of all cancers. In 2016, breast cancer is the most common cancer diagnosed among women in both developed and developing countries, accounting for nearly 30% of all cases, and worldwide accounts for one and a half million cases and over half a million deaths, being the fifth most common cause of cancer death overall and the second in developed regions. Geographic variation in incidence is the opposite of that of cervical cancer, being highest in Northern America and lowest in Eastern and Middle Africa, but mortality rates are relatively constant, resulting in a wide variance in case mortality, ranging from 25% in developed regions to 37% in developing regions, and with 62% of deaths occurring in developing countries.[17][122]
Systematically report and evaluate women's nutrition outcomes in research and program evaluation documents in low- and middle-income countries, including outcomes for adolescents, older women, and mothers (as opposed to reporting on women's nutrition as child nutrition outcomes alone). When possible, report and evaluate differences by setting (e.g., rural compared with urban) and socioeconomic status.
The gym is in the basement with seemed like slow ceiling and dim lighting.  I tried to attend a zumba class -- the class was in the middle floor, cramped and crowded.  I couldn't see the instructor (in fact I didn't even know who the instructor and what was going on)  people looked lost in the class.  I kept bumped into one of the cycles.  After 10mins of frustration, I gave up on zumba and just hopped on a treadmill, only to find the treadmill was placed on unleveled with a hole on the floor!  My treadmill was flip-flopping with each step.  I then went to the stretching area hoping to may just suck it up for the next 30 minutes and call it a day.  I found the mat to be dirty and the corner for stretching was dark and tight.   There's not enough lockers to use.  The shower stalls look small and dirty.  I just didn't get an good feeling after this first class.  
What you eat is even more important as you enter your 40s. Women need protein (meat, fish, dairy, beans, and nuts), carbohydrates (whole grains), fats (healthy oils), vitamins, minerals, and water. These foods have been linked to some disease prevention, such as osteoporosis, high blood pressure, heart disease, diabetes, and certain cancers. The American Academy of Family Physicians supports the development of healthy food supply chains in supplemental nutrition programs so as to broaden the availability of healthy food.