With zero estrogen after surgical menopause, and no hrt how can i protect myself against the potenial side effects such as altzeimers, lung cancer et?

Adrenal estrogen: You still have some estrogen produced by your adrenal glands. Relax, estrogen deficiency can lead to many things like vaginal dryness and bone loss -- but it doesn't lead to alzheimer's or lung cancer. Some women are potential candidates for estrogen replacement therapy. Check w/your doctor.

Exercise: The best defense against chronic diseases (including cancer) is living a healthful lifestyle (i.e. Eating an anti-inflammatory diet, exercise, stress reduction, don't smoke, avoid toxins and carcinogens.).