i must say you do put alot of detail in your writing, lots of attention to the font,
in regards to cortisol i dont know much but i have heard of relora, gingko, grapeseed, icariin, colostrum, being shown to reduce cortisol, there could be more substances that could also though.
http://www.ergo-log.com/cortisol.html
Very interesting the CORTISOL LOWERING topic, and
thank you for the suggestions!
I am very familar with all those that you have suggested and for the sake of clarity I think it best that I address each individually / grouped as follows:
RELORA (MAGNOLIA OFFICINALIS and PHELLODENDRON AMURENSE)Yes, brilliant! This one is definitely going on the list... nice one!
I should mention that in my clinical practice, despite the brand's marketing spiel regarding RELORA, it
does cause sedation in some (but not all) people which can be a 'deal-breaker' regards taking it; however, there are many people who
can take it without any side effects whatsoever, whom find it a helpful adjunct in treating ANXIETY
GINKGO BILOBA and HORNY GOAT WEED (ICARIIN) gotta love that name!
Never gets old!
Both these can in fact
cause ANXIETY in some (but not all) people.
GRAPE SEED EXTRACT The problem with GRAPE SEED EXTRACT in relation to CORTISOL REDUCTION is akin to PHOSPHATIDYLSERINE (PS) in that, like PS, the dosage that effectively impacts CORTISOL levels also has the potential to induce intolerable SIDE EFFECTS in many people, including but not limited to: HEADACHE, INSOMNIA, NAUSEA and STOMACH UPSET.
COLOSTRUMUnfortunately, there does not exist conclusive substantiated evidence regards COLOSTRUM being effective in reducing CORTISOL levels.
There is only a single study that indicates a reduction in CORTISOL, but from the FULL TEXT it is clear that is limited, and furthermore there was NO SIGNIFICANT DIFFERENCES in either HS [High Stress] subjects or LS [Low Stress] subjects with regards to TENSION, DEPRESSION, ANGER, VIGOR or FATIGUE
Furthermore, there is another study reporting COLOSTRUM have
no effect in reducing CORTISOL LEVELS.
See the following:
Am J Clin Nutr. 2000 Jun;71(6):1536-44.
The bovine protein alpha-lactalbumin increases the plasma ratio of tryptophan to the other large neutral amino acids, and in vulnerable subjects raises brain serotonin activity, reduces cortisol concentration, and improves mood under stress.Markus CR, Olivier B, Panhuysen GE, Van Der Gugten J, Alles MS, Tuiten A, Westenberg HG, Fekkes D, Koppeschaar HF, de Haan EE.
SourceTNO Nutrition and Food Research Institute, Zeist, The Netherlands. markus@voeding.tno.nl
AbstractBACKGROUND: Increased brain serotonin may improve the ability to cope with stress, whereas a decline in serotonin activity is involved in depressive mood. The uptake of the serotonin precursor, tryptophan, into the brain is dependent on nutrients that influence the cerebral availability of tryptophan via a change in the ratio of plasma tryptophan to the sum of the other large neutral amino acids (Trp-LNAA ratio). Therefore, a diet-induced increase in tryptophan availability may increase brain serotonin synthesis and improve coping and mood, particularly in stress-vulnerable subjects.
OBJECTIVE: We tested whether alpha-lactalbumin, a whey protein with a high tryptophan content, may increase the plasma Trp-LNAA ratio and reduce depressive mood and cortisol concentrations in stress-vulnerable subjects under acute stress.
DESIGN: Twenty-nine highly stress-vulnerable subjects and 29 relatively stress-invulnerable subjects participated in a double-blind, placebo-controlled study. Subjects were exposed to experimental stress after the intake of a diet enriched with either alpha-lactalbumin or sodium-caseinate. Diet-induced changes in the plasma Trp-LNAA ratio and prolactin were measured. Changes in mood, pulse rate, skin conductance, and cortisol concentrations were assessed before and after the stressor.
RESULTS: The plasma Trp-LNAA ratio was 48% higher after the alpha-lactalbumin diet than after the casein diet (P = 0.0001).
In stress-vulnerable subjects this was accompanied by higher prolactin concentrations (P = 0.001),
a decrease in cortisol (P = 0.036), and reduced depressive feelings (P = 0.007) under stress.
CONCLUSIONS: Consumption of a dietary protein enriched in tryptophan increased the plasma Trp-LNAA ratio and, in stress-vulnerable subjects, improved coping ability, probably through alterations in brain serotonin.
PMID: 10837296
FROM FULL TEXT:“A cortisol stress response was prevented in HS [High Stress] subjects but not in LS [Low Stress] subjects…”Furthermore there was NO SIGNIFICANT DIFFERENCES in either HS [High Stress] subjects or LS [Low Stress] subjects with regards to TENSION, DEPRESSION, ANGER, VIGOR or FATIGUE.----------------------------------------------------------------------------------------------------------------------------------------------
Int J Sport Nutr Exerc Metab. 2011 Apr;21(2):135-45.
Bovine colostrum supplementation's lack of effect on immune variables during short-term intense exercise in well-trained athletes.Carol A, Witkamp RF, Wichers HJ, Mensink M.
SourceDiv. of Human Nutrition, Wageningen University and Research Center, Wageningen, The Netherlands.
AbstractThe purpose of this study was to investigate the potential of bovine colostrum to attenuate postexercise decline in immune function. The authors evaluated the time course of a number of immune variables after short-term intense exercise in 9 male athletes after 10 d of supplementation with either colostrum or skim-milk powder. To increase the stress on the immune system subjects performed a glycogen-depletion trial the evening before the endurance trial (90 min at 50% Wmax). Blood samples were taken before the glycogen-depletion trial, before and after the endurance trial, and the next morning, ~22 hr after cessation of the exercise.
Plasma cortisol levels increased over time, reaching the highest level directly after exercise, and were still elevated ~22 hr after exercise compared with baseline values (p < .001). Neutrophil cell count was increased after exercise and dropped below starting values 22 hr after exercise (time effect p < .001). Circulating immunoglobulins did not change over time. A significant time effect was seen for interleukin (IL)-6, IL-10, IL-1-receptor agonist, and C-reactive protein, with levels being higher directly after exercise (p < .05). Other cytokines (interferon-γ, IL-1a, IL-8, tumor necrosis factor-a) did not show a time effect. No differences were seen between colostrum and skim-milk powder in any of the investigated variables. Our results are consistent with the hypothesis that intense exercise affects several variables of the immune system. Colostrum did not alter any of the postexercise immune variables compared with skim-milk powder, suggesting no role for bovine colostrum supplementation in preventing postexercise immune suppression after short-term intense exercise.
PMID: 21558575
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I should add that there is another 'supplement' which effectively reduces CORTISOL and is a safe and effective ANXIOLYTIC, which is GEROVITAL H3; however, it requires administration via INTRAMUSCULAR INJECTION, which (for obvious reasons) is why I have not included it on the list.
Edited by ScienceGuy, 05 February 2012 - 08:23 PM.