Green tea has mechanisms to inhibit protein, carbohydate, and fat uptake. However, it seems that when consuming green tea as part of a meal the 'inhibition of protein' is not a concern and the 'inhibition of fat', although present, is practically small. Only carbohydrate uptake is practically relevant in regards to calories, although cholesterol uptake is quite effectively reduced as well.
Green Tea possesses a ton of mechanisms which lead to the conclusion that it can inhibit a good deal of nutrient uptake.
It can inhibit the enzymes lactase, sucrase, maltase, amylase, a-glucosidase, lipase, trypsin, pepsin, and chymotrypsin.
However, the effects on the protein digestive enzymes (inhibition) are greatly alleviated when one salivates; proline-rich peptides are secreted in the saliva which can reduce the inihibitory effects on protein-digestive enzymes.
Studies on the matter, that try to examine caloric malabsorption, measure how many calories are in the feces of the subjects. Its not the most pleasant methodology, but it works. Fecal analysis is something that makes a primary researcher glad for graduate students and lab assistants.
In rats, studies analyzing feces note that fecal triglycerides increase from 3.5g daily to 5.8g daily with 1% Green Tea catechins by weight of the diet. So the result is present, but it is minimal.
In regards to carbohydrates, after examining a test meal with 100mg Green Tea Catechins malabsorption of carbohydrates was seen to be 25% in human volunteers, whereas increases in fat malabsorption were again minimal.
Related Nutrition Articles
- Do I need to cycle caffeine?
- What are flavones, catechins, anthocyanins, and those healthy plant compounds?
- Is saturated fat bad for your health?
- Low-fat vs low-carb? Major study concludes: it doesn’t matter for weight loss
- Does Garcinia Cambogia help with weight loss?
- Can hypothyroidism lead to fat gain?
- How do I stay out of "starvation mode?"
- How eating better can make you happier
- Measuring body fat percentage: It's an accuracy thing
- Does eating at night make it more likely to gain weight?
- Does diet soda inhibit fat loss?
- A compound from beer may help fat loss
- Can one binge make you fat?
- Will carbs make me fat?
- How do I get a six-pack?
- Does eating a higher carb diet make you more full?
- How does protein affect weight loss?
- What should you eat for weight loss?
- Will eating eggs increase my cholesterol?
- Will lifting weights convert my fat into muscle?
- How do I lose fat around my belly?
- Does high-protein intake help when dieting?
- How are carbohydrates converted into fat deposits?
- Does eating fat make you fat?
- Is diet soda bad for you?
- How important is sleep?
- How to minimize fat gain during the holidays
- What is Adrenal Fatigue?
- I have lost significant weight and now have loose skin. How can I tighten up my skin?
- Is it better to do aerobic exercise fasted?
- Are there health benefits to a low carb diet?
- How can I make red meat healthier?
- Fact check: does glutamine build muscle?
- How can you assess protein quality?
- Whey Protein and Efficiency
- Is semen high in protein?
- High-Protein Diets Linked to Cancer: Should You Be Concerned?
- Can eating too much protein be bad for you?
- 5 little-known facts about protein
- How much protein do you need after exercise?
- How much protein do you need per day?
- Whey vs soy protein: which is better when losing weight?
- How much protein can you eat in one sitting?
- Do muscle building supplements cause testicular cancer?
- Naz S, et al. Epigallocatechin-3-gallate inhibits lactase but is alleviated by salivary proline-rich proteins . J Agric Food Chem. (2011)
- Raederstorff DG, et al. Effect of EGCG on lipid absorption and plasma lipid levels in rats . J Nutr Biochem. (2003)
- Zhong L, Furne JK, Levitt MD. An extract of black, green, and mulberry teas causes malabsorption of carbohydrate but not of triacylglycerol in healthy volunteers . Am J Clin Nutr. (2006)