Does heaven exist? With well over 100,000 plus recorded and described spiritual experiences collected over 15 years, to base the answer on, science can now categorically say yes. Furthermore, you can see the evidence for free on the website allaboutheaven.org.

Available on Amazon
also on all local Amazon sites, just change .com for the local version (.co.uk, .jp, .nl, .de, .fr etc.)


This book, which covers Visions and hallucinations, explains what causes them and summarises how many hallucinations have been caused by each event or activity. It also provides specific help with questions people have asked us, such as ‘Is my medication giving me hallucinations?’.

Available on Amazon
also on all local Amazon sites, just change .com for the local version (.co.uk, .jp, .nl, .de, .fr etc.)

Observations placeholder

Black cohosh does not exert an estrogenic effect on the breast



Type of Spiritual Experience


A description of the experience

Nutr Cancer. 2007;59(2):269-77.

Black cohosh does not exert an estrogenic effect on the breast.

Ruhlen RL1, Haubner J, Tracy JK, Zhu W, Ehya H, Lamberson WR, Rottinghaus GE, Sauter ER.

  • 1Department of Surgery, University of Missouri-Columbia, Columbia, MO 65212, USA.


Women's Health Initiative findings indicate that hormone replacement therapy may increase breast cancer and cardiovascular disease risk.

Black cohosh extract (BCE) is a popular alternative that reduced menopausal symptoms in several clinical trials. Preclinical studies have addressed the estrogenic properties of BCE, with conflicting results. The estrogenic influence of BCE on the breast has not been investigated.

Black cohosh is standardized to triterpenes, but the activity and mechanism of action of these compounds are unknown. The study goals were to determine

  • 1) triterpene content of 2 commercially available BCE preparations and
  • 2) the effect of BCE on circulating and breast-specific estrogenic markers.

Two black cohosh preparations were analyzed for triterpene content. Postmenopausal women took BCE for 12 wk followed by a 12-wk washout.

One BCE preparation contained trace amounts and another contained 2.5% triterpenes.

Women taking BCE with 2.5% triterpenes experienced relief of menopausal symptoms, with reversion toward baseline after washout.

BCE had no effect on estrogenic markers in serum and no effect on pS2 or cellular morphology in nipple aspirate fluid. Triterpene content in commercially available black cohosh preparations varies. BCE standardized to 2.5% triterpenes relieved menopausal symptoms without systemic or breast-specific estrogenic effects.

PMID:  18001221

The source of the experience


Concepts, symbols and science items



Science Items

Activities and commonsteps