A woman’s health needs shift in noticeable ways over the decades. The teen figuring out her first periods, the 30-year-old thinking about pregnancy and the 50-year-old dealing with hot flashes face very different questions, yet many of the same healthy habits help at every stage.
This Nemin.io guide covers the major chapters of women’s health: menstrual cycles, planning for pregnancy, the months after birth, perimenopause and menopause, and protecting your bones for the long run. For the checkups and screening tests recommended at each age, see our preventive health guide.
Key Takeaways
- Adult menstrual cycles typically last about 21 to 35 days. Very heavy, very painful or missing periods deserve a checkup.
- Anyone who could become pregnant should get 400 micrograms (mcg) of folic acid every day, starting before pregnancy.
- Menopause is confirmed after 12 months in a row without a period, and effective treatments exist for bothersome symptoms.
- Bone loss speeds up after menopause, so calcium, vitamin D and weight-bearing exercise matter at every age.
- Heart disease is the leading cause of death for women in the US, so heart-healthy habits matter.
Understanding Your Menstrual Cycle
Many girls get their first period around age 12, though a few years earlier or later can be normal. A cycle is counted from the first day of one period to the first day of the next. In adults, cycles of about 21 to 35 days are typical, with bleeding that lasts two to seven days.
Logging your dates, flow and symptoms in an app or calendar shows what’s normal for you and helps your doctor.
Heavy or painful periods
Signs that bleeding may be heavier than normal include:
- Soaking through one or more pads or tampons every hour for several hours in a row
- Passing blood clots the size of a quarter or larger
- Bleeding for more than seven days
- Feeling tired, weak or short of breath, which can signal low iron (anemia)
Mild cramps often ease with a heating pad, gentle exercise or an over-the-counter pain reliever such as ibuprofen or naproxen; follow the label and check with a pharmacist if you take other medicines. Pain that keeps you home from school or work, or that worsens over time, can signal conditions such as endometriosis or fibroids.
Other changes to watch
Tell your doctor about missed periods, cycles that suddenly change, bleeding between periods or after sex, and severe mood symptoms before your period. If you use tampons, choose the lowest absorbency you need and change them every four to eight hours to lower the rare risk of toxic shock syndrome.
Planning for a Healthy Pregnancy
Many pregnancies are unplanned, and important development happens in the first weeks, often before a person knows they’re pregnant. That’s why preconception health matters for anyone who could become pregnant, not only those actively trying.
Your preconception checklist
- Take folic acid. The CDC recommends 400 mcg of folic acid daily for everyone who could become pregnant, starting at least one month before pregnancy, to help prevent serious birth defects of the brain and spine. Many multivitamins contain this amount.
- Schedule a preconception visit to review your health history, family history, vaccinations and every medicine or supplement you take. Don’t stop a prescription on your own.
- Get chronic conditions under control. Diabetes, high blood pressure, thyroid disease, depression and seizure disorders are best managed before conception.
- Stop smoking, vaping, alcohol and recreational drugs. No amount of alcohol is known to be safe during pregnancy.
- Eat well and stay active, and talk with your doctor about a healthy weight for you.
When to ask about fertility
Pregnancy is most likely from sex in the few days before and on the day of ovulation, which usually falls about two weeks before the next period. If you’re under 35 and haven’t conceived after 12 months of regular unprotected sex, or you’re 35 or older and it’s been six months, talk to a doctor. Those over 40, or with very irregular periods or a history of endometriosis or pelvic infections, should ask sooner. Both partners should be evaluated.
After the baby arrives
Short-lived “baby blues,” with tearfulness and mood swings, are common in the first couple of weeks after birth. Sadness, anxiety, hopelessness or trouble bonding that lasts longer or feels overwhelming may be postpartum depression, which is treatable. The National Maternal Mental Health Hotline, 1-833-TLC-MAMA (1-833-852-6262), offers free, confidential support by call or text. If you have thoughts of harming yourself or your baby, call or text 988 right away.
Perimenopause and Menopause
Menopause is the point when you’ve gone 12 months in a row without a period, not explained by pregnancy, illness or medication. In the US, the average age is in the early 50s. The transition before it, called perimenopause, can begin several years earlier, often in the 40s.
Common symptoms
- Irregular periods that may be heavier, lighter, closer together or further apart
- Hot flashes and night sweats
- Trouble sleeping
- Mood changes, irritability or anxiety
- Vaginal dryness and discomfort during sex
- More frequent urination, urgency or urinary infections
Practical ways to feel better
- Dress in layers and keep your bedroom cool; a fan by the bed can help with night sweats.
- Notice your personal hot flash triggers, which often include alcohol, caffeine, spicy food and warm rooms.
- Stay physically active to support mood, sleep and bones.
- Try over-the-counter vaginal moisturizers or lubricants for dryness.
Treatment options
If symptoms disrupt your life, talk with your doctor. Hormone therapy is the most effective treatment for hot flashes and night sweats, low-dose vaginal estrogen can relieve dryness and some urinary symptoms, and non-hormonal prescription medicines are another option. The right choice depends on your age, time since your last period and your personal risk of blood clots, stroke, heart disease and breast cancer. Be cautious with compounded “bioidentical” hormones and menopause supplements, which aren’t tested like approved medicines.
Heart disease risk also rises after menopause, and our heart health guide explains how to keep blood pressure and cholesterol in check.
Protecting Your Bones for Life
Most people reach their peak bone mass by around age 30. After menopause, falling estrogen speeds up bone loss, which is why women face a higher risk of osteoporosis, a condition that makes bones fragile and easier to break.
Calcium and vitamin D
According to the National Institutes of Health, women ages 19 to 50 need 1,000 milligrams (mg) of calcium a day and women over 50 need 1,200 mg. Most adults need 600 international units (IU) of vitamin D daily, rising to 800 IU after age 70. Good food sources include:
- Milk, yogurt and cheese
- Calcium-fortified plant milks, juices and cereals
- Canned salmon or sardines with their soft bones
- Tofu made with calcium sulfate
- Leafy greens such as kale, collards and bok choy
- Fatty fish and fortified foods for vitamin D
Move to build and keep bone
Weight-bearing activities such as brisk walking, dancing, hiking and climbing stairs, plus muscle-strengthening exercises with weights, bands or body weight, help maintain bone and muscle. Balance exercises such as tai chi lower the risk of falls, which cause most hip fractures.
Other bone-friendly habits
- Don’t smoke, and limit alcohol.
- Ask whether any of your medicines, such as long-term steroids, affect your bones.
- Prevent falls at home with good lighting, secured rugs and bathroom grab bars.
- Ask your doctor when a bone density test makes sense for you, especially after a fracture from a minor fall.
Habits That Help at Every Age
Some of the most powerful steps for women’s health have nothing to do with hormones. Know the heart attack signs women often have: shortness of breath, nausea, or pain in the back, jaw or arm, with or without chest pain. Depression and anxiety are also common and very treatable.
- Fill most of your plate with vegetables, fruits, whole grains, beans and lean proteins.
- Aim for at least 150 minutes of moderate activity a week, plus muscle strengthening on two days.
- Get seven or more hours of sleep a night.
Browse our Women’s Health section for more guides like this one.
When to See a Doctor
Contact your doctor or get care promptly for:
- Bleeding that soaks a pad or tampon every hour for more than two hours, or heavy bleeding with dizziness or fainting
- Any vaginal bleeding after menopause
- Sudden, severe pelvic or belly pain, especially if you could be pregnant
- No period by age 15, or periods that stop for three months when you’re not pregnant
- High fever, vomiting, a sunburn-like rash or dizziness while using a tampon
- During or after pregnancy: a severe headache that won’t go away, vision changes, chest pain, trouble breathing, heavy bleeding, a fever of 100.4°F or higher, or pain and swelling in one leg
- A new breast lump, nipple discharge or skin changes on the breast
- Thoughts of harming yourself; call or text 988 any time
For emergencies, readers in the US should call 911.
Frequently Asked Questions
Can I still get pregnant during perimenopause?
Yes. Ovulation becomes less regular during perimenopause but doesn’t stop right away. If you don’t want to become pregnant, keep using birth control until you’ve gone 12 months without a period or your doctor says it’s safe to stop.
Are irregular periods something to worry about?
Irregular cycles are common in the first few years after periods start and during perimenopause. At other times, ongoing irregularity can point to pregnancy, PCOS, thyroid problems, stress or changes in weight or exercise, so get a checkup.
Should I take a calcium supplement?
Try to get most of your calcium from food. If your diet falls short, a supplement can fill the gap, but more than you need adds no benefit and may raise the risk of kidney stones in some people. Ask your doctor or pharmacist what’s right for you.
Is menopausal hormone therapy safe?
For many healthy women who start it before age 60 or within about 10 years of their last period, the benefits for bothersome symptoms often outweigh the risks. It isn’t right for everyone, such as some people with a history of breast cancer, blood clots or stroke, so decide with your doctor.
Sources and Further Reading
Find more family health guides on the Nemin.io homepage. These organizations also offer trustworthy information:
- American College of Obstetricians and Gynecologists (ACOG)
- Office on Women’s Health, U.S. Department of Health and Human Services
- Centers for Disease Control and Prevention (CDC)
- Bone Health and Osteoporosis Foundation
- MedlinePlus, from the U.S. National Library of Medicine
This guide is for general education only and is not medical advice. Please talk to your doctor about your own health, symptoms and treatment options.
