The effective components in flaxseed are generally considered as flaxseed oil and lignans. The role of these two components can be explained by Baidu. I only list their side effects: 1. They may cause allergic reactions. 2. Because flaxseed has estrogenic properties, pregnant women and lactating women should avoid using flaxseed. 3. Suffering from estrogen-sensitive cancer or high-risk groups, it is not recommended to take a large amount of flaxseed. People with diabetes need to be careful, which may lead to hypoglycemia. It is recommended to follow the doctor's advice. 5. Flaxseed contains a small amount of cyanide, so it is not recommended to take a large amount of raw flaxseed or flaxseed products.
Soluble dietary fiber rich in flaxseed can delay gastric emptying and affect intestinal absorption; Another animal experiment shows that adding 10% flaxseed in the diet can increase the level of leptin, which is beneficial to suppress appetite and reduce fat synthesis, which is the theoretical basis for flaxseed to lose weight. But "flaxseed is good for weight loss in theory" does not mean "flaxseed oil is good for weight loss in practice". If you drink a spoonful of linseed oil in the morning and evening according to the merchant's suggestion, you will consume about 180 calories, which is equivalent to 2/3 steamed bread (80 g steamed bread made of 50 g flour) or 2/3 bowls of rice (rice made of 50 g rice1130g). Drinking like this every day is not to lose weight but to gain weight.
Although linseed oil has a good effect on cancer patients, breast cancer patients are a special case and are not easy to eat. Because linseed oil contains a lot of phytoestrogens, it has a certain health care effect on normal people, but it will stimulate breast development again for breast cancer patients. This means that breast cancer cells may spread. Therefore, it is not recommended for breast cancer patients.
The production technology of linseed oil includes: pressing method and leaching method. The pressing methods are mainly divided into cold pressing and hot pressing. Cold pressing refers to vegetable oil with very low Wendy number, which is squeezed by great physical and mechanical pressure. Hot pressing refers to the physical pressing of oil crops after high temperature drying or steaming. This is a traditional pressing process with high oil yield.