As of 2015, Nigeria is the world's 20th largest economy, worth more than $500 billion and $1 trillion in terms of nominal GDP and purchasing power parity respectively.
In healthy people, eating as much as one egg per day doesn't increase the risk of heart disease or stroke, according to a review article published in the British Medical Journal in 2013. People with diabetes, however, may experience an increased risk at this consumption level.
At least up to 3 eggs per day. There are few studies that have looked beyond that, though I find it difficult to believe that 4 would be significantly worse than 3. The 300 mg limit on cholesterol originally recommended in the US, was a trivial number put together on little research in the 60's that stuck for decades.