Dr. Yolanda N. Evans, MD, MPH

Anorexia nervosa, frequently referred to as anorexia, is a disorder where people severely restrict the types and quantity of food they eat. Those with anorexia have an extreme fear of eating and gaining weight and may repeatedly weigh themselves or engage in harmful behaviors such as excessive exercise or starvation. Those with anorexia often find themselves preoccupied with food, but unable to consume a healthy amount of it. This results in symptoms such as abnormally low BMI, vitamin deficiency, fatigue, fainting, and amenorrhea (lack of menstruation in women). Anorexia may cause bluish discoloration of the hands, brittle and falling out hair, yellowish skin, and lanugo (fine, downy hair). Left untreated, anorexia can lead to organ failure, brain damage, and even death.

Bulimia nervosa, typically called bulimia, is a disorder where people binge (eat large quantities of food) and purge the food that they just consumed by vomiting, laxative abuse, fasting, or excessive exercise. This behavior is usually motivated by a feeling of powerlessness over eating and a fear of weight gain or desire for weight loss. Bulimia can occur in underweight, normal weight, and overweight people. Symptoms of bulimia include acid reflux, intestinal distress, dehydration from purging, amenorrhea, and dental erosion from vomiting. Some people with bulimia have swollen parotid glands (salivary glands near the cheeks) and red scars and marks on the backs of their knuckles. Electrolyte imbalance from bulimia can be particularly severe and may lead to heart attack or stroke.

Binge eating disorder (BED) is the most common eating disorder. People with BED feel that they are unable to control the amount of food they eat and may continue to binge after reaching a point of fullness. BED binges (consuming large amounts of food) are often accompanied by feelings of sadness, guilt, and shame. Symptoms of BED include obesity, acid reflux, weight gain, and dissatisfaction with one's body. People with BED tend to experience cycles of negative emotions and binges. Binges or BED episodes can be provoked by stress, boredom, restrictive dieting, depression, and other triggers.

Other common eating disorders include:

• Pica, eating things that are not food, such as paper, ice, or soil
• Avoidant/Restrictive Food Intake Disorder (ARFID), disinterest in eating and avoidance of food
• Other Specified Feeding or Eating Disorder (OSFED), abnormal eating that does not fall under any disorder

Many people with eating disorders do not consciously develop them, and have difficulty seeking treatment. For this reason, it's important to detect and treat eating disorders as early as possible. Treatment for eating disorders can vary from therapy visits to inpatient treatment, depending on the disorder and its severity. Treatment aims to not only restore physical health and correct negative behaviors, but to also promote psychological well-being and self-confidence.

Sexual intimacy disorders are those that cause problems with the act of sexual intercourse, such as erectile dysfunction or vulvodynia. Erectile dysfunction, the inability to get or maintain an erection hard enough for sexual intercourse, is extremely common. It affects fully half of men over 40 to some degree. It is treated with medications, devices, or surgery. Vulvodynia, burning pain in the vulva that can be made worse with sexal activity, has no known cause. It is treated with oral or topical medications.

Sexually transmitted diseases, including HIV/AIDS, herpes, gonorrhea, and chlamydia, are bacterial or viral infections that are contagious in the bodily fluids exchanged during sexual contact. Barrier methods of contraception, such as condoms, help prevent the spread of STDs. HIV is a virus that can be caught from an infected person's sexual fluids or blood. When the virus infects the body, it interferes with the immune system and causes the disease known as AIDS. There is no cure, but anti-viral medications can help people with AIDS live a long and healthy life. Herpes is also a virus found in sexual fluids, called HSV-2. It causes blisters that come and go on the genitals. There is no cure for herpes, but anti-virals can minimize outbreaks. Gonorrhea and chlamydia are both bacterial infections. They are extremely common and often have no symptoms. The most common signs of an infection are burning pain and discharge. Gonorrhea and chlamydia can be treated with medications.

Reproductive health refers to both contraception and infertility treatment. Contraceptives prevent and plan the timing of pregnancy. Some, such as a vasectomy or tubal ligation, are extremely effective at preventing pregnancy. Others, such as spermicides, are less reliable. Popular contraceptives include condoms, birth control pills, IUDs, and diaphragms. On the other side of reproductive health, infertility is the inability to carry a pregnancy to term after one year of trying. It can be due to problems in either the man or the woman, and both genders are affected equally. In total, about 15% of the population suffer from infertility. Infertility treatments include medications and surgery.

Gay and transgender people have a few specific health care needs that may sometimes fall under the sexual health umbrella. First, many LGBT people still face discrimination from healthcare providers, so providing supportive and appropriate care is an issue. Because of social attitudes surrounding sexual orientation and gender identity, many gay and transgender people struggle with their identities. Rates of depression, substance abuse, and suicide are all higher in this group. Providing mental health support and counseling to those in transition is critical. Finally, transgender patients who are undergoing gender affirmation require sensitive medical health care, including surgical and hormonal treatment.

Sexual violence can be defined as any unwanted or non-consensual sexual activity. It ranges from sexual harassment to touching to rape. It affects women more than men and is widespread: 1 in 4 women report being victims of sexual violence at the hands of a partner, and as many as 1 in 3 girls report their first sexual contact as being violent. Sexual violence has lasting physical and emotional consequences for victims, but educating both girls and boys can prevent violence. Care for those who have endured sexual violence includes counseling and mental health support, medical care, and legal support.

Sexuality is more than a reproductive requirement -- it is a form of expression and identity. Sexual health blends all these aspects of experience together and helps people lead sexually fulfilling lives.