Did Mawson reach the South Pole?

Did Mawson reach the South Pole?

A member of the scientific staff of Sir Ernest Henry Shackleton’s Antarctic Expedition (1907), Mawson, together with T.W.E. David, reached the south magnetic pole on the high ice plateau of Victoria Land on January 16, 1909. The two men made this landmark journey by sledge.

What is Douglas Mawson known for?

Sir Douglas Mawson OBE FRS FAA (5 May 1882 – 14 October 1958) was an Australian geologist, Antarctic explorer, and academic. Along with Roald Amundsen, Robert Falcon Scott, and Sir Ernest Shackleton, he was a key expedition leader during the Heroic Age of Antarctic Exploration.

Is vitamin A toxic to dogs?

Deficiency in vitamin A can lead to serious conditions, especially blindness. However, too much vitamin A or hypervitaminosis A can lead to serious toxicity. While somewhat uncommon in North America, vitamin A toxicity is sometimes diagnosed in dogs that are fed primarily table scraps.

Can eating liver cause vitamin A toxicity?

Vitamin A Toxicity It is possible, and even dangerous, to consume too much vitamin A. Eating large amounts of liver can lead to symptoms of vitamin A toxicity.

Why is broccoli bad for you?

In general, broccoli is safe to eat, and any side effects are not serious. The most common side effect is gas or bowel irritation, caused by broccoli’s high amounts of fiber. “All cruciferous vegetables can make you gassy,” Jarzabkowski said.

Why is too much vitamin A bad?

Can vitamin A be harmful? Yes, high intakes of some forms of vitamin A can be harmful. Getting too much preformed vitamin A (usually from supplements or certain medicines) can cause dizziness, nausea, headaches, coma, and even death.

What are symptoms of vitamin toxicity?

Symptoms of chronic vitamin A toxicity include:

• blurry vision or other vision changes.
• swelling of the bones.
• bone pain.
• poor appetite.
• dizziness.
• nausea and vomiting.
• sensitivity to sunlight.
• dry, rough skin.

What is the most toxic vitamin?

Taking 60,000 international units (IU) a day of vitamin D for several months has been shown to cause toxicity. This level is many times higher than the U.S. Recommended Dietary Allowance (RDA) for most adults of 600 IU of vitamin D a day.

Does Vitamin D Help You Sleep?

An intervention study reported that vitamin D supplementation (D3) in veterans (50,000 IU/week) increased their sleep duration [56]. Another double-blind clinical trial showed use of vitamin D supplementation (50,000 IU/fortnight for 8 weeks) facilitated sleep duration and quality in people with sleep disorder [61].

What does vitamin D do in your body?

Your body must have vitamin D to absorb calcium and promote bone growth. Too little vitamin D results in soft bones in children (rickets) and fragile, misshapen bones in adults (osteomalacia). You also need vitamin D for other important body functions.