While the above may be major ways in which whey can help the dieter, there are a few second side effects of whey that can help in weight loss. For example, the effects of whey on serotonin levels. Serotonin is probably the most widely studied neurotransmitter as it has been found to be involved in many psychological and biological functions. Serotonin (also known as 5-hydroxytryptamine or 5-HT) is involved in behavior, anxiety, and appetite.
High serotonin levels can cause relaxation and reduce anxiety. Low serotonin levels are associated with low mood, increased anxiety (which is the current prevalence of SSRIs such as Prozac and others and poor appetite control. This is an extremely concise description of all the functions of serotonin in the human body - many of which are diabetic. is yet to be fully explained - but the full description goes beyond the scope of this article.
Needless to say, Increased serotonin levels in the brain are associated with improved human ability to cope with stress, while decreased serotonin activity is associated with stress and anxiety. High levels of serotonin in the body often result in relief from depression, as well as a significant reduction in sensitivity to pain, anxiety and depression. It has also been suggested that an increase in tryptophan diet will increase serotonin levels in the brain, while diet designed to reduce body fat (e.g., a calorie-reduced diet) may lead to a reduction in serotonin levels in the brain due to a decrease in production substrate. and a decrease in carbohydrates.
Many people who eat reduced calories in an effort to lose weight find that they are often frustrated and very anxious. Reduction of serotonin may be a slight offense here. Recent research (bovine alpha-lactalbumin protein raises the plasma level of tryptophan to other major neutral amino acids, and in high-risk studies raises serotonin activity in the brain, reduces cortisol concentration, and improves mood Am J Clin Nutr 2000 Jun; 71 (6): 1536-1544) has shown that alpha-lactalbumin - a small fraction found in whey with high tryptophan content - can increase Tryptophan plasma levels and reduce depression and cortisol concentration in subjects under severe stress who is thought to be at risk for depression.
The researchers evaluated twenty-nine "high-risk" studies and 29 "non-significant-risk" studies using a double-blind placebo-controlled study design. The study participants were exposed to experimental stress after eating a diet rich in alpha-lactalbumin (found in hey) or sodium-caseinate, another milk-based protein. Researchers look at:
* Changes in dietary intake of plasma tryptophan and its concentration in some large neutral amino acids.
* Prolactin levels.
* Emotional changes and heart rate.
* Cortisol levels (tested before and after stressor).
Surprisingly, plasma tryptophan levels in some of the amino acids tested were 48% higher after alpha-lactalbumin intake than after casein intake! This was accompanied by a decrease in cortisol levels and a high concentration of prolactin. Perhaps most importantly and most importantly for the average person reading this article, they have experienced “diminished feelings of depression” when test subjects are subjected to stress.
They concluded that "Consumption of dietary protein rich in tryptophan increased plasma Trp-LNAA levels and, in studies at risk for depression, improved coping capacity, possibly by brain serotonin modification." This effect was not observed in the sodium-caseinate group. If other studies can confirm these findings, whey may be another safe and effective supplement in the fight against depression and stress, as well as lowering serotonin levels through diet.
Although there is a long list of hormones involved in dietary control, some of which are mentioned above, serotonin appears to be a key player in the game. Typically, tests detect the availability of additional serotonin or activity = reduced food intake and decreased serotonin = increased food intake. If whey can be increased by choosing serotonin levels over other proteins, it can be very helpful for the dieter.
Other potential benefits of whey may provide a dieter to improve blood sugar control (Frid AH, Nilsson M, Holst JJ, Bjorck IM. The effect of whey on blood sugar and insulin responses to a combination of breakfast and lunch for type 2 diabetes . Am J Clin Nutr. 2005 Jul; 82 (1): 69-75.) Which is another important area in dietary control and digestion.
Finally, calcium from dairy products has been found to be associated with weight loss and fat loss. Calcium is thought to contribute to energy metabolism as intracellular calcium regulates fat cell (adipocyte) lipid metabolism and triglyceride retention. It has been shown in several studies that high milk intake and non-dairy calcium sources to improve body composition, and half a milk whey is probably key.
The mechanism by which the fat-based calcium-based fat loss against nondairy calcium is not fully understood but researchers looking at the issue “... calcium milk sources significantly reduce weight and fat gain and accelerate fat loss significantly than make additional sources of calcium. This increased effect of dairy products compared to increased calcium may be due to other bioactive compounds, including angiotensin-converting enzyme inhibitors and rich concentrations of branched-chain amino acids in whey, which work in combination with calcium to inhibit obesity. ”
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