Since vegetable oils are good sources of vitamin E, people who excessively scale back their complete dietary fats might not get sufficient vitamin E. Symptoms of vitamin A toxicity embody dry, itchy skin, headache, nausea, and lack of appetite. Signs of extreme overuse over a brief time period include dizziness, blurred vision and slowed progress.
Zinc additionally helps to supply the lively form of vitamin A and transports it around the physique. Other sources of calcium embody almonds, bok choy, kale, parsley, broccoli and watercress. It is better to get calcium from foods than from calcium dietary supplements.
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The main sources include poultry, lean pink meat, egg yolks, chickpeas, oily fish, dairy produce, cabbage, leeks, bananas and wheat germ. The average amount needed by an adult is 1.4mg a day with amounts growing throughout pregnancy and lactation. Although no Tolerable Upper Intake Level has been established for vitamin K, extreme amounts can cause the breakdown of purple blood cells and liver injury.
As you will notice, vitamin D may be poisonous at high ranges, so the aim is to succeed in the appropriate stage, not exceed it. Calcium supplements may cause gasoline, bloating, and/or constipation. [newline]You …