Phrases like 'I can't cope anymore' signal a person may be on the verge of a breakdown, stress expert Charlotte Watts warns. Many people are suffering from chronic stress, which can lead them to burnout. This feeling is one of exhaustion, depletion and loss of responses - a kind of numbness. Symptoms such as digestive issues, aches and pains and sugar cravings can be a sign of stress, as can poor posture, shallow breathing and being easily startled. Becoming over-sensitive, withdrawn or isolated are often indicators of tension. Here, Ms Watts reveals how to spot someone on the brink of burnout...

Kate Miller, 33, who lives in London, began to crave sugary snacks. She started to binge on chocolate, crisps and pizza and was soon eating 5,000 calories a day. But incredibly, she lost weight, dropping from 8st to 6st in four months (pictured left). She felt constantly thirsty, drinking six litres of water a day and waking up in the night to drink more. As she was going to the toilet a lot, her family and friends began to think she had an eating disorder and was purging her food. Eventually, she went to her GP, who diagnosed her with type 1 diabetes (she is pictured inset after her diagnosis). Now, she says she manages her condition through insulin injections and restricting her diet (she is pictured since her diagnosis, right). She says: 'Now I have regular check-ups and insulin injection after I eat carbohydrates or anything with a lot of sugar in, to help my body break it down. I've found as long as I inject myself when I need to, I can live a normal lifestyle.'

Jenna Lowe was a fit and healthy teenager until four years ago, when she found herself getting out of breath. It was more than just asthma: Jenna had a rare, life-threatening disease which meant, aged 19, she was told she would need a double lung transplant in order to make it to 21. But Jenna (pictured top left at her school ball in 2013) lived in South Africa, a country where just 0.2 per cent of the population is registered as a donor. So the inspirational university student led a campaign to get her to her 21st birthday (right), inspiring thousands to join the register by inviting everyone of them to celebrate the milestone with her. But tragically, Jenna passed away this week - after finally receiving the transplant she so desperately needed. Her family (bottom left) are now determined to carry on her legacy and get more people on the register.

William Mead (pictured above) of Penryn, Cornwall, was just 12 months old when he died, after NHS 111 staff working from a script missed the chance to save his life. An inquest into the infants death heard the helpline operator, with not medical training, advised his mother to give the seriously ill infant fluids, Calpol and Ibuprofen. Had he been admitted to hospital he could be alive today, the coroner was told. His parents, Melissa and Paul Mead (pictured above, inset), said their life had been torn apart by the loss of their 'perfect' little boy.

Emma Lovell, from Townsville, lost 135 kilograms after having a gastric bypass due to health concerns. The 34-year-old is now left with 20 kilograms of excess skin which will cost $50,000 to remove (right). Ms Lovell ballooned to 220 kilograms (left) in 2010 and after suffering an episode of pneumonia that almost left her dead, she booked in for a gastric bypass surgery.

In a series of touching black and white photographs, Mark Seymour, 55, from London, captures his father Ronnie's battle with Alzheimers to highlight the challenges the illness brings. When he was diagnosed at the age of 78, Ronnie, from Buckinghamshire, was a fit and active grandfather, who crafted his own pair of roller skates so he could play with his grandchildren. But as the cruel disease took hold Ronnie soon forgot the names of his family. His son Mark, said: 'When he was first diagnosed, we had no idea of how difficult it would be. Not many people see the struggles of dementia until you witness it first-hand. Me and my family are happy for people to see these photos as they give a glimpse into how someone deals with dementia and how the family cope, which is different from the adverts that use an actor to try and raise awareness.' Ronnie passed away on March 23, aged 82.

The UK charity Drinkaware has created a new calculator to help you track the calories in your drink. By inputting your favourite tipples you can discover how many units and calories you're consuming. Drinking four beers and two ciders plus a double G&T; means a total intake of 16.3 units or 1,284 calories - the equivalent of 4.4 burgers or a 128-minute run. Meanwhile consuming three 175ml glasses of wine, two glasses of champagne and a double vodka and tonic equals 11.9 units, 777 calories and is the equivalent to eating 2.6 burgers.

Jessica Versey, 19, from Chester, recovered from acute myeloid leukaemia after her sister, Maisy, 10, donated her bone marrow. But the teenager died this week, after developing a chest infection. Her brother, Sean said: ' She was truly special and was an inspiration; she was more than a sister, she was my best friend. We would like to emphasise that Jess passed away from an infection, she did not pass away from cancer, she beat cancer and she inspired others to fight and stand against it.'

Controversial hypnotherapist and life coach Steve Miller, from Solihull in the West Midlands, says it's 'not cool' that American plus-size model Tess Holliday is encouraging women to 'love' their fat. The opinionated life coach has been dubbed the 'Simon Cowell of the slimming world'.

The Columbia University study indicated people born in May had the lowest disease risk, and those born in October the highest. After using their algorithm to examine New York City medical databases, they found 55 diseases that correlated with the season of birth. 'Lifetime disease risk is affected by birth month,' the researchers wrote in in the Journal of American Medical Informatics Association. Author Nicholas Tatonetti said: 'This data could help scientists uncover new disease risk factors.'

Pamela Walters, 65, from Cotgrave, Nottinghamshire, fell and broke both her wrists and her leg while walking around a county park (her broken leg is pictured, right). A passer-by found her and called an ambulance, as she was 1.5 miles from a main road or car park, but was told she should go to her out of hours GP instead. He phoned the police, and eventually an ambulance was sent, two hours after the original call. Mrs Walters was taken to hospital, and had five hours of surgery to fit metal plates to her shattered bones. Her son, Mark Blackamore, 41 (pictured, left, with his mother and sister, Sally Chippendale), said the ambulance service's response was 'unacceptable'.

Thea Wilson, 37, from Burwarton, Shropshire, woke up from a night out covered in in huge purple and yellow bruises all over her body (pictured left and inset). When the marks hadn't subsided a few days later, she went to her GP who initially misdiagnosed her with a platelet disorder, which can cause large bruising. But luckily the GP referred her to hospital for a bone marrow biopsy, and when the results came back Miss Wilson was dealt the devastating blow she had a rare form of leukaemia. Doctors said it was a 'medical emergency' as she was suffering from Acute Promyelocytic Leukaemia (APML) - a very rare form of the blood cancer that affects only 100 people per year. She was rushed to an isolation room in hospital for four cycles of intensive chemotherapy, as her blood wasn't clotting properly, leaving her in danger of internal bleeding. Six months after she was diagnosed, she has been told she is in remission (right).

Rodrigo Alves, 31, who lives in London, underwent an eight hour hair transplant operation which saw surgeons cut out a patch of his hair and move it to his forehead (he is pictured, left, before the procedure and right, afterwards). He decided to have the £16,000 operation so he could attend pool parties. He said he was sick of having to cover bald patches with dark make-up, which would run down his face if it got wet, which he said 'wasn't pretty'. They also implanted 2,700 grafts in his temple, increasing the hair line by an inch (he is pictured, right, after the operation). The Brazilian-born air steward has now spent a total of £208,000 on achieving the dream body, having gone through 32 body-changing operations. He has been diagnosed with Body Dysmorphic Disorder, an anxiety disorder that causes a person to have a distorted view of how they look, and is receiving treatment.

EXCLUSIVE: Carrie Smith, 38, from Killearn near Glasgow, got sunburnt on a ski season in her 20s and her skin never recovered. Any time she exercised, went outside in the sun or cold weather, became stressed or drank alcohol, her skin would become red, mottled and angry looking due to severe rosacea. By her 30s her skin was permanently red (left), and people constantly asked if she was sunburnt or drunk. This knocked her confidence, and as she could not wear make up and had to wrap herself up rather than wearing revealing clothes, she says it affected her dating life. After trying a range of treatments, she stumbled across a cream containing an extract of capers. Within a month, her skin was under control (right) and she now feels 'normal' and much more confident. She said: 'I can even bare to look at myself in photos now as I am very pleased to see that I don't look like a strawberry lollipop anymore. It's boosted my confidence no end as my skin feels under my control now rather than feeling like a furious monster with a mind of its own.'

James Jack Stark, 14, from Hemel Hempstead, was born with pectus carinatum, a deformity known as pigeon chest (left). It caused his torso to protrude outwards, giving it a bowed-out appearance which made him hate the way he looked. He even threatened to smash his own torso with a hammer. In January, the 14-year-old had his breastbone and his ribs manipulated while he received pain-killing gas and air, and was then fitted with a special brace. After just four months of wearing the contraption, his chest has completely flattened (right). His mother, Jacquie Stark, now says he walks with a swagger and wants to join the armed forces one day. Mrs Stark, 42, said: 'He instantly became a different child in terms of confidence and physical stature. He is so confident, walks with a swagger and his head held high. You would not recognise him as the same child.'

EXCLUSIVE: Charlotte Eades, from Brighton, was diagnosed with a brain tumour when she was 16. Doctors warned her prognosis was bleak, having detected a brain tumour, as well as growths in her spine. Today, two years later, having endured painful operations and radiotherapy which has left her partially blind and deaf, as well as still going through chemotherapy five days every month, she told MailOnline cancer has helped her turn her life around. Having to face such a terrifying ordeal, she said, has made her more confident and helped her get a grip on her anxiety. She is now the face of a new CLIC Sargent charity campaign. A powerful short film tells Charlotte's story, telling of what her life has been like since she was diagnosed with cancer. The 70-second film, ends with Charlotte telling viewers: 'I have had just two years, one year, cancer in my best years. Tough times, more time, best support the whole time... and I'm still here. Cancer doesn't have to stop you being young.'

Steve Beer, 45, and wife Michelle, 43, from Plymouth, weighed 55 stone between them and appeared on a Channel 5 show called Too Fat To Work last January. They recently embarked on a weight loss mission with intensive slimming boot camp, Fat-Off-Fit-In and have lost 13 stone. Steve now has a job interview lined up at a nursing home. Pictured clockwise from left: Steve and Michelle now, Steve and Michelle before their weight loss, and Steve and Michelle with fitness guru Paul Saunders.