HER2 Support Group Forums - View Single Post - importance of vitamin d in breast cancer prevention

Becky · 06-09-2007, 01:44 PM

D2 (the less desirable form) must be converted to D3 (for use in the body) by the liver. Most people are very efficient at the conversion but some are not. Also, the ability of the liver to convert is compromised with age so as we get older, we become less efficient at doing it. Both forms are good for you but you need much more of D2 if you are an inefficient converter (which most of us don't know what we are!!??)

20 minutes of exposing the arms, legs and face to the sun without sunblock 3X per week during April - October in most regions gives you more than enough D3. During the rest of the year, you need supplement for sure. I use cod liver oil and the D that is in my calcium supplement. I make sure I take about 800 iu in supplementation. The rest I get because I eat dairy.

Hope this helps you. The D3 form is also known as Ergocaleiferol (in a supplement) and the D2 for is known as Cholecaleiferol (in a supplement).

06-09-2007, 01:44 PM	#6
Becky Senior Member Join Date: Sep 2005 Location: Stockton, NJ Posts: 4,179	D2 (the less desirable form) must be converted to D3 (for use in the body) by the liver. Most people are very efficient at the conversion but some are not. Also, the ability of the liver to convert is compromised with age so as we get older, we become less efficient at doing it. Both forms are good for you but you need much more of D2 if you are an inefficient converter (which most of us don't know what we are!!??) 20 minutes of exposing the arms, legs and face to the sun without sunblock 3X per week during April - October in most regions gives you more than enough D3. During the rest of the year, you need supplement for sure. I use cod liver oil and the D that is in my calcium supplement. I make sure I take about 800 iu in supplementation. The rest I get because I eat dairy. Hope this helps you. The D3 form is also known as Ergocaleiferol (in a supplement) and the D2 for is known as Cholecaleiferol (in a supplement). __________________ Kind regards Becky Found lump via BSE Diagnosed 8/04 at age 45 1.9cm tumor, ER+PR-, Her2 3+(rt side) 2 micromets to sentinel node Stage 2A left 3mm DCIS - low grade ER+PR+Her2 neg lumpectomies 9/7/04 4DD AC followed by 4 DD taxol Used Leukine instead of Neulasta 35 rads on right side only 4/05 started Tamoxifen Started Herceptin 4 months after last Taxol due to trial results and 2005 ASCO meeting & recommendations Oophorectomy 8/05 Started Arimidex 9/05 Finished Herceptin (16 months) 9/06 Arimidex Only Prolia every 6 months for osteopenia NED 18 years! Said Christopher Robin to Pooh: "You must remember this: You're braver than you believe and stronger than you seem and smarter than you think"