I'm 32 and recently quit the hormonal birth control pills (ortho tri-cyclen/generic equivalent) that I'd been on for over 15 years (!!). That was about 6 months ago and approximately four months after I started eating Paleo. My main motivation to quit was the horrible mood swings I was experiencing that only seemed to get worse every month. I expected a rough adjustment and potential few months of irregularity but have so far only suffered one seriously late period out of about 7. Cramps are minimal (1 day) and heavy flow only lasts for one day - in fact I happened upon this thread because I was starting to wonder if a light, 4-5 day long period is normal or healthy. The only downside of kicking the pill thus far has been occasional acne. Sex drive went through the roof and my moods stabilized greatly so I'm happy with my decision.