Since hormones are so mutually dependent, an excess of one creates deficiency of another, and thus, numerous possiblities for hormone imbalance. Some common patterns:
Estrogen dominance relative to a lack of adequate progesterone, is common at menopause, and in women who do not ovulate regularly. Linked with unwanted symptoms, thyroid dysfunction and breast cancer risks.
Testosterone/Estrogen ratio relative to declining testosterone levels in mid-life men, estrogen levels, normally minimal in males, tend to rise. Linked with "male menopause", thyroid and prostate problems.
Cortisol highs/lows from stress overload cause adrenal imbalance, fatigue and allergies; also block testosterone/ dhea to accelerate bone loss and aging.
Thyroid deficiency High estrogens and/or cortisols thwart thyroid activity to trigger low thyroid symptoms: cold hands, dry skin, weight gain, and low libido.