Soy protein detrimental for muscles strength in older people

haidut

Member
Joined
Mar 18, 2013
Messages
17,437
Location
USA / Europe
A humans study, which once again confirms the detrimental effect of soy on muscles. According to the authors, the effect is likely due to the estrogenic properties of soy.
Btw, the high dairy protein group had the biggest increase in strength gain.

http://www.sciencedirect.com/science/ar ... 1415000400

"...Increased soy protein intake attenuated gains in muscle strength during resistance training in older adults compared with increased intake of dairy protein or usual protein intake."
 

sladerunner69

Member
Joined
May 24, 2013
Messages
3,185
Age
28
Location
Los Angeles
Intresting I was under the impression that soy was estrogenic because of the phytoestrogens that are present in its fat, not its protein. I thought soy protein was relatively free from anything besides the amino acids...
 

haidut

Member
Thread starter
Joined
Mar 18, 2013
Messages
17,437
Location
USA / Europe
Intresting I was under the impression that soy was estrogenic because of the phytoestrogens that are present in its fat, not its protein. I thought soy protein was relatively free from anything besides the amino acids...

I think it is very hard to find soy protein without the estrogenic isoflavones. In fact, most soy protein is sold with them since they are considered beneficial and acting like a type of SERM.
 

sladerunner69

Member
Joined
May 24, 2013
Messages
3,185
Age
28
Location
Los Angeles
I think it is very hard to find soy protein without the estrogenic isoflavones. In fact, most soy protein is sold with them since they are considered beneficial and acting like a type of SERM.

The whole concept of SERM is confusing to me.... I have trouble believing certain estrogens are more harmful than others when estrogen as a chemical compound is well-defined and specific. So if it's role is to turn off certain receptors I suppose that could be beneficial, albeit not at the cost of consuming further estrogen...
 

Blossom

Moderator
Joined
Nov 23, 2013
Messages
8,548
The whole concept of SERM is confusing to me.... I have trouble believing certain estrogens are more harmful than others when estrogen as a chemical compound is well-defined and specific. So if it's role is to turn off certain receptors I suppose that could be beneficial, albeit not at the cost of consuming further estrogen...
It's designed to be confusing. Ray predicted this would happen back in 1999.
Estrogen Article just published (from 1999) | Ray Peat Forum
 
Similar threads
Thread starter Title Forum Replies Date
GutFeeling Casein, Zein And Gluten Reduces Cortex Tryptophan, Lactaalbumin, Soy Protein Increase It Scientific Studies 1
haidut Dairy best for endotoxin protection; soy protein worst Scientific Studies 1
DANIEL Make Sure Your Eggs Are Soy-Free! Diet 15
G Is Soy Flour Problematic? Starches, Fiber, Legumes 3
M Normalize A Child's Estrogen After A Year On Soy Formula? Ask For Help or Advice 32
postman How Much Soy Lecithin Is Commonly Used In Chocolate? Sweets, Snacks 13
L Transfer Of Soy Isoflavone Into The Egg Yolk Of Chickens Dairy, Eggs 1
homyak Soy Isoflavones + Cayenne For Hair Loss Experiments 0
TheBeard Rugged Vs Soy Boy Male Issues 38
pauljacob Chicken Fed Soy Meal Increase Estrogen In The Body Animals 1
yerrag Trump Admin To Crack Down On Soy? Diet 2
L Thorne Research Vitamin K2 Derived From Soy? K 16
HealthisWealth What Symptoms You Get From Eating Soy, Wheat, Goitrogens? Symptoms, Causes 5
M Why Does Soy Reduce Estrogen Levels In Studies? Scientific Studies 17
alywest Somehow Soy Pufa Is Ok For Progest-E? Ask For Help or Advice 5
Mito FDA Moves To Revoke Soy Health Claim Articles & Scientific Studies 8
Elize Best Soy Free Progesterone To Use Metabolism 6
Max. Powered Milk And Soy Lethicin Ask For Help or Advice 4
PaulaV Progest E And Soy Female Issues 20
Let Go Subway's Soy Chicken Miscellaneous 2
C Phytoestrogens In Soy Vs. Estrogens In Milk Doubts About Milk 27
B Soy Isoflavones Have An Antiestrogenic Effect Scientific Studies 19
P Your Breasts Don’t Lie: Soy, Flax And Other Estrogenic Foods And Herbs Trigger Precancerous Breasts Thyroid and Hormones 17
T Raw milk ice cream or Organic IC without Soy Lecithin Milk 4
B Concerns about adverse effects [from soy] are not supported by the clinical or epidemiologic literat Articles & Scientific Studies 5
haidut Another study shows GMO soy can cause serious health problems Scientific Studies 0
Amazoniac Experience With Fermented Soy Products Vegetables, Grains, Legumes, Fiber 11
haidut Soy has negative effect on breast cancer patients Scientific Studies 3
Bluebell Bio-Identical Progesterone From Soy? Progesterone 3
haidut Tofu / Soy Is Toxic To The Brain Scientific Studies 5
M Ack, Soy. Messtafarian 13
J Soy allergies and Vitamin Supplement Intolerance Supplements 0
J Soy Lecithin Free Chocolate Sweets, Snacks 33
P Why does everything have gums and soy Rant or Rave 8
J Soy Lecithin Articles & Scientific Studies 51
D Which Vitamin E Products Don't Contain Soy Oil? E 14
M Not enough protein - what will happen? Ask For Help or Advice 2
Mito Causal effects of relative fat, protein, and carbohydrate intake on chronic kidney disease Articles & Scientific Studies 8
Mito Methylene Blue Inhibits the SARS-CoV-2 Spike-ACE2 Protein Miscellaneous Health Discussions 6
A Pea Protein Experiences? Ask For Help or Advice 6
R Protein extracted from lion’s mane mushroom downregulates nitric oxide synthase Scientific Studies 0
Lokzo Bile acids alter male fertility through G-protein-coupled bile acid receptor 1 signaling pathways in mice Scientific Studies 0
Mr Joe Homemade Peat-Friendly Whey Protein Supplements, Pharmaceutical Drugs 1
GelatinGoblin Low-Moderate sugar meal with no Protein, Serotonin inducing? Ask For Help or Advice 5
J Safest form of protein shake? Dairy 6
S Thoughts on Casein protein vs cheese or milk? Diet 7
Serge Protein To Sugar Conversion Question Metabolism 11
Mito The Metabolic, Neuroprotective Cardioprotective And Antitumor Effects Of The Klotho Protein Articles & Scientific Studies 7
G Calcium-Phosphorus Ratio In Animal Protein Sources: What To Choose? Diet 7
GreekDemiGod Can Only Truly Be Satiated If Eating Over 150g Of Protein / Day Diet 9

Similar threads

Top