Together with the obvious environmental benefits, cycling also has many health benefits:
Arteries: less fatty in men, Annals of Internal Med 2001; 154; 336.
Body energy: more effective at increasing than occasional vigorous exercise, Nature 29th March 2001.
Cancer: breast cancer lower risk, Am J Epidermiology 2001; 154; 336.
Cancer: lower colon/breast/prostate risk, possibly lung/endometrial, Cancer Epid. Biomarkers & Prevention 2001; 10; 287.
Cancer: less pancreatic cancer risk, J Am Med Ass 2001; 286; 921.
Heart attack: lower risk after sex, Heart 2001; 86; 387.
Heart disease: lower risk, Circulation 2000; 102; 975; also Casperson, 1987.
Heart disease: lower risk for women, N Eng J Med 2000; 343; 16; also J Am Med Ass 2001; 285; 1447.
Heart sufferers: fitness up, J Am Med Ass 2000; 283; 3095.
Menopause: better cholesterol levels, Circulation 2001; 103; 32.
Stroke: lower risk in women, J AM Med Ass 2000; 283; 2961; also Stroke 2000; 31; 14.