If you take medications for these conditions or have anxiety, you may want to avoid yohimbine, another review concludes.
Calorie-count – what you need to know
According to the NHS, there’s no single rule that applies to everyone, but to lose weight at a safe and sustainable rate of 0.5 to 1kg a week, most people are advised to reduce their energy intake by 600 calories a day.
For most men, this will mean consuming no more than 1,900 calories a day, and for most women, no more than 1,400 calories a day.
“The best way to achieve this is to swap unhealthy and high-energy food choices – such as fast food, processed food and sugary drinks (including alcohol) – for healthier choices,” advises the NHS.